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Efficient Quantum Algorithms related to Autocorrelation Spectrum [article]

Debajyoti Bera and Subhamoy Maitra and SAPV Tharrmashastha
<span title="2019-10-08">2019</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
In this paper, we propose efficient probabilistic algorithms for several problems regarding the autocorrelation spectrum.  ...  We extend the idea to "Higher-order Deutsch-Jozsa" quantum algorithm to obtain points corresponding to large absolute values in the Walsh spectrum of a certain derivative of f().  ...  Acknowledgements The second author acknowledges the support from the project "Cryptography & Cryptanalysis: How far can we bridge the gap between Classical and Quantum Paradigm", awarded under DAE-SRC,  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/1808.04448v2">arXiv:1808.04448v2</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/vnsy35j3mvhrrbntdjkbfiib7u">fatcat:vnsy35j3mvhrrbntdjkbfiib7u</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200823004412/https://arxiv.org/pdf/1808.04448v2.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/68/8b/688b3da0800550ba39af6b2e38ad61b37505b099.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/1808.04448v2" title="arxiv.org access"> <button class="ui compact blue labeled icon button serp-button"> <i class="file alternate outline icon"></i> arxiv.org </button> </a>

Spectrum Estimation from Quantum-Limited Interferograms

D.R. Fuhrmann, C. Preza, J.A. O'Sullivan, D.L. Snyder, W.H. Smith
<span title="">2004</span> <i title="Institute of Electrical and Electronics Engineers (IEEE)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/gkn2pu46ozb4tmkxczacnmtvkq" style="color: black;">IEEE Transactions on Signal Processing</a> </i> &nbsp;
Index Terms-Cramer-Rao bound, EM algorithm, interferograms, interferometry, multiplex disadvantage, spectrum estimation.  ...  Three spectrum estimation algorithms are studied: maximum likelihood via the expectation-maximization (EM) algorithm, least squares (LS), and the fast Fourier transform (FFT) with data precorrection.  ...  Spectrum Estimation from Quantum-Limited Interferograms I.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tsp.2004.824216">doi:10.1109/tsp.2004.824216</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/zia2pzultjbkflxq3casl7hrbu">fatcat:zia2pzultjbkflxq3casl7hrbu</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20051224222332/http://www.essrl.wustl.edu:80/~jao/Papers/JournalPublications/01275669.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/42/d0/42d0315793000bbd8ae1b024007df5e0ebd916f0.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tsp.2004.824216"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> ieee.com </button> </a>

Efficient state initialization by a quantum spectral filtering algorithm

François Fillion-Gourdeau, Steve MacLean, Raymond Laflamme
<span title="2017-04-21">2017</span> <i title="American Physical Society (APS)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/z3u6fzrh4fdvhnzujueyvzipwi" style="color: black;">Physical Review A</a> </i> &nbsp;
An algorithm that initializes a quantum register to a state with a specified energy range is given, corresponding to a quantum implementation of the celebrated Feit-Fleck method.  ...  This algorithm would be useful for the initialization phase of the simulation of quantum systems on digital quantum computers.  ...  ACKNOWLEDGMENTS The authors would like to acknowledge interesting discussions with R. Somma. Also, the authors are grateful to J. Dumont for carefully revising earlier versions of the manuscript.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1103/physreva.95.042331">doi:10.1103/physreva.95.042331</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/uqoarfopqbey7ndymy67b25ppm">fatcat:uqoarfopqbey7ndymy67b25ppm</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200914174813/https://arxiv.org/pdf/1605.02747v2.pdf" title="fulltext PDF download [not primary version]" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <span style="color: #f43e3e;">&#10033;</span> <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/2b/83/2b83c354ed40c0b988de9523e28e5eff2ff5d803.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1103/physreva.95.042331"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> aps.org </button> </a>

Coherence automatic adjustment of the optical pulses inside mode-lock fiber laser cavity

Alexey Kokhanovskiy, Aleksey Ivanenko, Sergey M. Kobtsev, Sergey Turitsyn, Qihuang Gong, Guang-Can Guo, Byoung S. Ham
<span title="2018-11-09">2018</span> <i title="SPIE"> Quantum and Nonlinear Optics V </i> &nbsp;
To search a pulsed regime with defined parameters we applied automatic genetic algorithm.  ...  To prove the feasibility of the genetic algorithm we applied it to find double -scale pulsed regimes with a fixed envelope duration of 50 ps and the contrast of the coherence peak in range of 0.02 -0.5  ...  Figure 4 : 4 Radio-frequency spectrum of the double-scale pulse b) Typical optical spectrum of the double-scale pulse Figure 5 : 5 Scheme of genetic algorithm applied to laser system We fixed ACF ref  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1117/12.2500786">doi:10.1117/12.2500786</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/sphdwmn645bzloninejjrclkoa">fatcat:sphdwmn645bzloninejjrclkoa</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200508204830/https://publications.aston.ac.uk/id/eprint/37913/1/1082518.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/c3/7a/c37a923cd0228c4540aa1c200019a9325cabf46c.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1117/12.2500786"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> Publisher / doi.org </button> </a>

Role of sampling in evaluating classical time autocorrelation functions

Tomáš Zimmermann, Jiří Vaníček
<span title="2013-09-14">2013</span> <i title="AIP Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/hnc5ddfunnd3taca63uf5ggldm" style="color: black;">Journal of Chemical Physics</a> </i> &nbsp;
We analyze how the choice of the sampling weight affects the efficiency of the Monte Carlo evaluation of classical time autocorrelation functions.  ...  Yet, for the stationary Gaussian distribution of harmonic systems and for the autocorrelation function of a linear function of phase-space coordinates, the computational cost of this standard algorithm  ...  Finally, to demonstrate that all three algorithms indeed converge to the same result, we calculated the vibrational spectrum of a 48-dimensional harmonic model of the ground electronic state of azulene  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1063/1.4820420">doi:10.1063/1.4820420</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/24050326">pmid:24050326</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/g4n6nmvp45cqhlrdnthuhvuagu">fatcat:g4n6nmvp45cqhlrdnthuhvuagu</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20180719042736/https://infoscience.epfl.ch/record/188467/files/JChemPhys_139_104105.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/d9/0a/d90a343c30fd345fba560e28d2093ff6817f3931.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1063/1.4820420"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> Publisher / doi.org </button> </a>

Page 7164 of Mathematical Reviews Vol. , Issue 89M [page]

<span title="">1989</span> <i title="American Mathematical Society"> <a target="_blank" rel="noopener" href="https://archive.org/details/pub_mathematical-reviews" style="color: black;">Mathematical Reviews </a> </i> &nbsp;
systems in close relation with other quantum sciences and quantum statistical mechanics.”  ...  Summary: “Two algorithms are presented for the efficient iden- tification of segment neighborhoods. A segment neighborhood is a set of contiguous residues that share common features.  ... 
<span class="external-identifiers"> </span>
<a target="_blank" rel="noopener" href="https://archive.org/details/sim_mathematical-reviews_1989-12_89m/page/7164" title="read fulltext microfilm" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Archive [Microfilm] <div class="menu fulltext-thumbnail"> <img src="https://archive.org/serve/sim_mathematical-reviews_1989-12_89m/__ia_thumb.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a>

Large-scale quantum-dynamics with matrix product states [article]

Alberto Baiardi, Markus Reiher
<span title="2019-03-25">2019</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
We apply our algorithm to the simulation of quantum dynamics of models of increasing complexity, ranging from simple excitonic Hamiltonians to more complex ab-initio vibronic ones.  ...  algorithms.  ...  The Hamiltonian of Eq. (44) has become a standard benchmark system to probe the efficiency of new semiclassical 104-106 and quantum 18,23,87,107,108 dynamics algorithms.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/1903.10622v1">arXiv:1903.10622v1</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/3imk67crrvfqjnjtr2zaer6lhi">fatcat:3imk67crrvfqjnjtr2zaer6lhi</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200822014426/https://arxiv.org/pdf/1903.10622v1.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/9e/fc/9efc26750ae1a4a345e6210e0097578c32bf49d9.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/1903.10622v1" title="arxiv.org access"> <button class="ui compact blue labeled icon button serp-button"> <i class="file alternate outline icon"></i> arxiv.org </button> </a>

Efficient Quantum Vibrational Spectroscopy of Water with High-Order Path Integrals: from Bulk to Interfaces [article]

Sam Shepherd, Jinggang Lan, David M. Wilkins, Venkat Kapil
<span title="2021-08-06">2021</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
In order to map different regions of experimental spectra to the microscopic structure of a system, it is important to combine them with first-principles atomistic simulations that incorporate the quantum  ...  Here, we show that the large cost of calculating quantum vibrational spectra of aqueous systems can be dramatically reduced compared to standard path integral methods by using approximate quantum dynamics  ...  The noise induced by the deconvolution algorithm is comparable to the weak signal of the modes below 2000 cm −1 and thus washes out the low frequency part of the spectrum.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/2108.03056v1">arXiv:2108.03056v1</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/m5tlp7hwrrbebo3gqvpdkuozyu">fatcat:m5tlp7hwrrbebo3gqvpdkuozyu</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20210829102106/https://arxiv.org/pdf/2108.03056v1.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/32/f3/32f3e80e182e6395092b70495139aef25a6438c1.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/2108.03056v1" title="arxiv.org access"> <button class="ui compact blue labeled icon button serp-button"> <i class="file alternate outline icon"></i> arxiv.org </button> </a>

Quantum grow—A quantum dynamics sampling approach for growing potential energy surfaces and nonadiabatic couplings

Oded Godsi, Michael A. Collins, Uri Peskin
<span title="2010-03-28">2010</span> <i title="AIP Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/hnc5ddfunnd3taca63uf5ggldm" style="color: black;">Journal of Chemical Physics</a> </i> &nbsp;
A quantum sampling algorithm for the interpolation of diabatic potential energy matrices by the Grow method is introduced.  ...  The sampling algorithm is formulated and applied for three representative test cases, demonstrating the recovery of analytic potentials by the interpolated ones, and the convergence of a dynamic observable  ...  Notice that the absolute error is in the range of 10 −3 −10 −2 eV, i.e., similar to the resolution of the autocorrelation spectrum.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1063/1.3364817">doi:10.1063/1.3364817</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/20370113">pmid:20370113</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/wp75tmuokjfitgzqbcxldnnft4">fatcat:wp75tmuokjfitgzqbcxldnnft4</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170921202614/https://openresearch-repository.anu.edu.au/bitstream/1885/16866/3/01_Godsi_Quantum_grow%e2%80%94A_quantum_2010.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/33/aa/33aa80870343b459bb3433544c1fa87caf120a6a.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1063/1.3364817"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> Publisher / doi.org </button> </a>

Transport properties of normal liquid helium: Comparison of various methodologies

Eran Rabani, Goran Krilov, David R. Reichman, B. J. Berne
<span title="2005-11-08">2005</span> <i title="AIP Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/hnc5ddfunnd3taca63uf5ggldm" style="color: black;">Journal of Chemical Physics</a> </i> &nbsp;
Several different methods are applied to compute the velocity autocorrelation function.  ...  Since it is still impossible to determine the exact result for the velocity autocorrelation function from simulation, we appeal to the computation of short-time moments to determine the accuracy of the  ...  The self-diffusion constant is then given by the Green-Kubo relation as the zero-frequency value of D͑͒ /2. 84 The power spectrum D͑͒ is also related to the imaginary-time velocity autocorrelation function  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1063/1.2109927">doi:10.1063/1.2109927</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/16292913">pmid:16292913</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/7wm5ogc7dbhuhllzqkzvqwy5da">fatcat:7wm5ogc7dbhuhllzqkzvqwy5da</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20140805172718/http://rafiki.tau.ac.il/~rabani/papers/paper59.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/a3/c6/a3c65e6b56e06fbc65b5c03d40076f1757ab0ac4.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1063/1.2109927"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> Publisher / doi.org </button> </a>

Measurement of 10-fs laser pulses

G. Taft, A. Rundquist, M.M. Murnane, I.P. Christov, H.C. Kapteyn, K.W. DeLong, D.N. Fittinghoff, M.A. Krumbugel, J.N. Sweetser, R. Trebino
<span title="">1996</span> <i title="Institute of Electrical and Electronics Engineers (IEEE)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/orhujhqrmfdutawmrhmrxswog4" style="color: black;">IEEE Journal of Selected Topics in Quantum Electronics</a> </i> &nbsp;
Previous measurements of such short pulses using techniques such as autocorrelation have been difficult to validate because at best incomplete information is obtained and internal self-consistency checks  ...  Indeed, we show how to correct a FROG trace with systematic error using one of these checks.  ...  Because the quantum efficiency of the CCD camera varies significantly over the wavelength range of interest, the spectral response of our system was determined using the emission spectrum of a well characterized  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/2944.571757">doi:10.1109/2944.571757</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/dtwfdainejdxhoxn2lpgi6udfy">fatcat:dtwfdainejdxhoxn2lpgi6udfy</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170810002913/http://frog.gatech.edu/Pubs/Taft-10fsFROGreview-JSTQE-1996.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/ff/96/ff9606f40e72f52b043c81a2e8f7eb26033a889a.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/2944.571757"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> ieee.com </button> </a>

Reconstruction of thermally symmetrized quantum autocorrelation functions from imaginary-time data

Cristian Predescu
<span title="2004-12-17">2004</span> <i title="American Physical Society (APS)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/nuk2stxzvvhf7ljciu325kj77m" style="color: black;">Physical Review E</a> </i> &nbsp;
A general class of reconstruction algorithms is then identified, according to Theorem 3.  ...  Finally, a maximum entropy inversion algorithm for the Hamburger moment problem is utilized to compute the quantum rate of reaction for a one-dimensional symmetric Eckart barrier.  ...  He wishes to express a special thanks to Professor William H. Miller for suggestions and stimulating discussions concerning the present development.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1103/physreve.70.066705">doi:10.1103/physreve.70.066705</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/15697551">pmid:15697551</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/tuq6s56eafdbbebjw6oxtmwqvy">fatcat:tuq6s56eafdbbebjw6oxtmwqvy</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20180728000228/http://cds.cern.ch/record/734771/files/0405051.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/b9/2b/b92b33d57445d05c4f9da9834aa321ac1d1ad0f2.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1103/physreve.70.066705"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> aps.org </button> </a>

Self-optimizing femtosecond semiconductor laser

Benjamin Döpke, Rouven H. Pilny, Carsten Brenner, Andreas Klehr, Götz Erbert, Günther Tränkle, Jan C. Balzer, Martin R. Hofmann
<span title="2015-04-07">2015</span> <i title="The Optical Society"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/cg4vcsfty5dfvgmat5wm62wgie" style="color: black;">Optics Express</a> </i> &nbsp;
An evolutionary algorithm generates spectrally resolved phase-and amplitude masks that lead to the utilization of a large part of the net gain spectrum for mode-locked operation.  ...  A self-optimizing approach to intra-cavity spectral shaping of external cavity mode-locked semiconductor lasers using edge-emitting multi-section diodes is presented.  ...  While the autocorrelation width would be more obvious as a fitness parameter, being directly related to the pulse duration, it does not lead to successful optimization when starting with arbitrary masks  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1364/oe.23.009710">doi:10.1364/oe.23.009710</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/25969009">pmid:25969009</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/7ymxm35t6vbd3cpctcj57eskqm">fatcat:7ymxm35t6vbd3cpctcj57eskqm</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20190428161603/https://hss-opus.ub.ruhr-uni-bochum.de/opus4/frontdoor/deliver/index/docId/6159/file/DoepkeBenjamin1.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/43/b7/43b78c345332bcefa6fb3342e64a1de540d830f3.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1364/oe.23.009710"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> Publisher / doi.org </button> </a>

A Spectrum Sensing Method for TDM based Cognitive Radio Networks

D Satyanarayana, Abdullah Said Alkalbani
<span title="2018-09-12">2018</span> <i title="Science Publishing Corporation"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/piy2nrvrjrfcfoz5nmre6zwa4i" style="color: black;">International Journal of Engineering &amp; Technology</a> </i> &nbsp;
The first phase handles the spectrum hole detection and the second phase allocates the spectrum hole.  ...  The simulation work shows that the proposed method is useful for solving the spectrum scarcity problems in TDM based systems.  ...  This period is called time quantum Δx. Each user uses the entire spectrum and the energy detector is used to check whether the spectrum is free or not for a quantum period of time Δx.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.14419/ijet.v7i4.1.28239">doi:10.14419/ijet.v7i4.1.28239</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/wtuaeps4argwhomglarlcsvvga">fatcat:wtuaeps4argwhomglarlcsvvga</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200213215947/https://www.sciencepubco.com/index.php/ijet/article/download/28239/14893" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/3c/13/3c1340423ee0cf5b6c64723ec5ef93dcaa9d33d3.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.14419/ijet.v7i4.1.28239"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> Publisher / doi.org </button> </a>

Quantum random number generator based on photonic emission in semiconductors

M. Stipčević, B. Medved Rogina
<span title="">2007</span> <i title="AIP Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/cnjzqiomx5bvfkyfzuscxpmlly" style="color: black;">Review of Scientific Instruments</a> </i> &nbsp;
The bit extraction method based on restartable clock theoretically eliminates both bias and autocorrelation while reaching efficiency of almost 0.5 bits per random event.  ...  Timing information of detected photons is used to generate binary random digits-bits.  ...  ACKNOWLEDGMENTS The authors are grateful to Professor B. Basrak form the Mathematical faculty of the University of Zagreb for enlightenig discussions.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1063/1.2720728">doi:10.1063/1.2720728</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/17477690">pmid:17477690</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/ybbzp7ziyvgwvbngb3cuvjomcq">fatcat:ybbzp7ziyvgwvbngb3cuvjomcq</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20120203120524/http://www-personal.umich.edu/~andrewcb/DSO/Papers/Random%20Number%20Generator/2007-quantum_random_number_generator_based_on_photonic_emission.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/0b/1f/0b1f51676e6e410bba51b4c6cf3af9039c9171aa.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1063/1.2720728"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> Publisher / doi.org </button> </a>
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