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A Classical Switched LC/LR Circuit Modeling the Quantum Zeno and Anti-Zeno Effects [article]

T. Hubsch, V. Pankovic
2009 arXiv   pre-print
Generalizing a recent analysis, we model the quantum Zeno and anti-Zeno effects with a quickly switched, ideal LC/LR circuit, in the limiting case of it alternating very many times between its short LC  ...  In turn, the parameter space of this model contains intermediate phases in which the circuit exhibits behaviors that seem to foreshadow other quantum effects of some interest.  ...  Acknowledgments: TH is a visiting professor at the Physics Department of the Faculty of Natural Sciences of the University of Novi Sad, Serbia, and wishes to thank for the recurring hospitality and resources  ... 
arXiv:0907.4361v1 fatcat:d4q7xtxmzzfqdcp3pvhezgieci

Exact solution and Majorana zero mode generation on a Kitaev chain composed out of noisy qubits [article]

Marko J. Rančić
2022 arXiv   pre-print
Here, I experimentally show that Majorana zero modes do in fact exist on a Kitaev chain composed out of 3 noisy qubits on a publicly available quantum computer.  ...  The signature of Majorana zero modes is a degeneracy with the ground state which is not lifted by noise of the quantum computer.  ...  Rančić for all her patience, support and science discussions during the course of this work. I am also grateful to O. Dmytruk for live discussions and explanations.  ... 
arXiv:2108.07235v2 fatcat:4rimilraivfolfef6dfeeofzwq

Quantum breathing mode of trapped bosons and fermions at arbitrary coupling

S. Bauch, K. Balzer, C. Henning, M. Bonitz
2009 Physical Review B  
An analysis of the quantum breathing behavior of few-particle Coulomb systems in one- and two-dimensional harmonic traps is presented.  ...  We report the existence of two independent breathing modes and present exact numerical results for two particles at any coupling strength which smoothly connect the two known limits of an ideal quantum  ...  Hochstuhl and financial support by the Innovationsfond Schleswig-Holstein and Deutsche Forschungsgemeinschaft via Grant No. SFB-TR 24.  ... 
doi:10.1103/physrevb.80.054515 fatcat:turlf7x6ifdnzjimshz553sqwe

Page 4995 of Mathematical Reviews Vol. , Issue 2004f [page]

2004 Mathematical Reviews  
We construct families of exact stationary solutions for the more general case of an elliptic function poten- tial.  ...  Summary: “In this Letter, the effects of boundary and connectiv- ity on ideal gases in two-dimensional confined space and three- dimensional tubes are discussed in detail based on the analytical result  ... 

Tonks-Girardeau and super-Tonks-Girardeau states of a trapped one-dimensional spinor Bose gas

M. D. Girardeau
2011 Physical Review A. Atomic, Molecular, and Optical Physics  
The exact ground state, a hybrid of Tonks-Girardeau (TG) and ideal Fermi gases, is constructed in the TG limit of infinite even-wave repulsion by a spinor Fermi-Bose mapping to a spinless ideal Fermi gas  ...  It is then shown that in the limit of infinite even-wave attraction this same state remains an exact many-body eigenstate, now highly excited relative to the collapsed generalized McGuire cluster ground  ...  One is a hybrid between an STG gas with strong attractions between atoms in spinsymmetric pair states and an ideal Fermi gas with no interactions, the STG component being an exact analog of the STG state  ... 
doi:10.1103/physreva.83.011601 fatcat:xufehtkd4nd3jidourctzqccy4

Bell's inequality test: more ideal than ever

Alain Aspect
1999 Nature  
of analysis?  ...  Looking at the data a posteriori, they found that the correlation immediately changed as soon as one of the polarizers was switched, without any delay allowing for signal propagation: this reflects quantum  ... 
doi:10.1038/18296 fatcat:er2uaemrsje5zjcae2k4t2qrxi

Theoretical Study of Molecular Quantum-Dot Cellular Automata

Yuhui Lu, Craig S. Lent
2005 Journal of Computational Electronics  
We present an ab initio quantum chemistry study of {(η 5 -C 5 H 5 )Fe(η 5 -C 5 H 4 )} 4 (η 4 -C 4 )Co(η 5 -C 5 H 5 ) 2+ , a molecular candidate for quantum-dot cellular automata (QCA) which has been synthesized  ...  We show that when molecules are properly arranged, one molecule can be switched by the Coulomb interaction produced by a neighboring molecule.  ...  Conclusion In this paper, we present an ab initio quantum chemistry analysis of a molecular QCA candidate, {(η 5 -C 5 H 5 )Fe(η 5 -C 5 H 4 )} 4 (η 4 -C 4 )Co(η 5 -C 5 H 5 ) 2+ which has been recently synthesized  ... 
doi:10.1007/s10825-005-7120-y fatcat:lhcdarlkizdjdpwknsltg45sbm

Theoretical study of molecular quantum dot cellular automata

Yuhui Lu, Lent
2004 Electrical Performance of Electronic Packaging IWCE-04  
We present an ab initio quantum chemistry study of {(η 5 -C 5 H 5 )Fe(η 5 -C 5 H 4 )} 4 (η 4 -C 4 )Co(η 5 -C 5 H 5 ) 2+ , a molecular candidate for quantum-dot cellular automata (QCA) which has been synthesized  ...  We show that when molecules are properly arranged, one molecule can be switched by the Coulomb interaction produced by a neighboring molecule.  ...  Conclusion In this paper, we present an ab initio quantum chemistry analysis of a molecular QCA candidate, {(η 5 -C 5 H 5 )Fe(η 5 -C 5 H 4 )} 4 (η 4 -C 4 )Co(η 5 -C 5 H 5 ) 2+ which has been recently synthesized  ... 
doi:10.1109/iwce.2004.1407355 fatcat:cxfz2hqcircvtaqz7c4kdur7lm

Heterogeneous microarchitectures trump voltage scaling for low-power cores

Andrew Lukefahr, Shruti Padmanabha, Reetuparna Das, Ronald Dreslinski, Thomas F. Wenisch, Scott Mahlke
2014 Proceedings of the 23rd international conference on Parallel architectures and compilation - PACT '14  
The effectiveness of these techniques depend critically on both efficient architectural implementation and accurate scheduling to maximize energy efficiency for a given level of performance.  ...  The question remains, in this fine-grained switching regime, which form of heterogeneity offers better energy efficiency for a given level of performance?  ...  The authors would like to thank the fellow members of the CCCP research group, our shepherd (Osman Unsal), and the anonymous reviewers for their time, suggestions, and valuable feedback.  ... 
doi:10.1145/2628071.2628078 dblp:conf/IEEEpact/LukefahrPDDWM14 fatcat:z4k6w56l75bsngfhhisfg23lfq

Finite-size analysis of continuous variable source-independent quantum random number generation [article]

Junyu Zhang, Yi-Chen Zhang, Ziyong Zheng, Ziyang Chen, Bingjie Xu, and Song Yu
2020 arXiv   pre-print
We study the impact of finite-size effect on continuous variable source-independent quantum random number generation.  ...  It is found that the distribution of quantified output related with sampling range size has significant effects on the loss of final randomness due to finite-size effect.  ...  As an ideal alternative, quantum random number generators (QRNGs) have attracted much attention in the past few years [1, 2] because they exploit the fundamental indeterminacy of quantum mechanics and  ... 
arXiv:2002.12767v1 fatcat:xmbpmoejlzgqvipwlv7uaw5pbu

Best-practice aspects of quantum-computer calculations: A case study of hydrogen molecule [article]

Ivana Miháliková, Martin Friák, Matej Pivoluska, Martin Plesch, Martin Saip, Mojmír Šob
2021 arXiv   pre-print
Quantum computers are reaching one crucial milestone after another.  ...  Motivated by their progress in quantum chemistry, we have performed an extensive series of simulations of quantum-computer runs that were aimed at inspecting best-practice aspects of these calculations  ...  nature of quantum states (in the case of simulating an ideal quantum processor).  ... 
arXiv:2112.01208v1 fatcat:4b5fuju25vcltg33pma2zsdoii

Best-Practice Aspects of Quantum-Computer Calculations: A Case Study of the Hydrogen Molecule

Ivana Miháliková, Martin Friák, Matej Pivoluska, Martin Plesch, Martin Saip, Mojmír Šob
2022 Molecules  
Quantum computers are reaching one crucial milestone after another.  ...  Motivated by their progress in quantum chemistry, we performed an extensive series of simulations of quantum-computer runs that were aimed at inspecting the best-practice aspects of these calculations.  ...  The views expressed are those of the authors and do not reflect the official policy or position of IBM or the IBM Quantum Team.  ... 
doi:10.3390/molecules27030597 pmid:35163858 pmcid:PMC8840274 fatcat:qc66yp6tsfdgzbqamvz6fop4ku

Quantum breathing mode of interacting particles in harmonic traps

Sebastian Bauch, David Hochstuhl, Karsten Balzer, Michael Bonitz
2010 Journal of Physics, Conference Series  
B. 80 054515] we present a systematic analysis of the breathing mode for fermions with an inverse power law interaction potential w(r) ∼ r −d with d = 1, 2, 3 in the whole range of coupling parameters.  ...  The results thus cover the range from the ideal "gas" to the Wigner crystal-like state.  ...  Following the discussion of the excitation and (theoretical) measurement of the collective modes in such a quantum system we switch to the case of 1/r 2 interaction.  ... 
doi:10.1088/1742-6596/220/1/012013 fatcat:f4orkks3yncrbeflfckelssnfe

Quantum many-body dynamics of coupled double-well superlattices

Peter Barmettler, Ana Maria Rey, Eugene Demler, Mikhail D. Lukin, Immanuel Bloch, Vladimir Gritsev
2008 Physical Review A. Atomic, Molecular, and Optical Physics  
We also study the non-equilibrium dynamics of the one-dimensional ferromagnetic Heisenberg Hamiltonian and show that the time evolution of a state of decoupled triplets on each double well leads to the  ...  These ideas are a step forward towards the use of atoms trapped by light as quantum information processors and quantum simulators.  ...  This work was partially supported by the NSF, Harvard-MIT CUA, and USAFOSR. P.B. is supported by the Swiss National Science Foundation. A.M.R. acknowledges support from ITAMP.  ... 
doi:10.1103/physreva.78.012330 fatcat:7ci5oexr4zapjpxapadl6tuzlm

Effect of loss on multiplexed single-photon sources

Damien Bonneau, Gabriel J Mendoza, Jeremy L O'Brien, Mark G Thompson
2015 New Journal of Physics  
An on-demand single-photon source is a key requirement for scaling many optical quantum technologies.  ...  A promising approach to realize an on-demand single-photon source is to multiplex an array of heralded single-photon sources using an active optical switching network.  ...  Each lossy component is modelled as an ideal component preceded by an ideal beamsplitter with a nonunit transmission probability.  ... 
doi:10.1088/1367-2630/17/4/043057 fatcat:lb3fz74drng2zc5d3mmhygngye
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