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Heralded noiseless linear amplification and distillation of entanglement

G. Y. Xiang, T. C. Ralph, A. P. Lund, N. Walk, G. J. Pryde
2010 Nature Photonics  
Here we introduce, and experimentally demonstrate, such a noiseless linear amplifier for continuous-variables states of the optical field, and use it to demonstrate entanglement distillation of field-mode  ...  It is known that non-deterministic versions of ideal cloning and local entanglement increase (distillation) are allowed, suggesting the possibility of non-deterministic noiseless linear amplification.  ...  Higgins for useful discussions. This work was supported by the Australian Research Council.  ... 
doi:10.1038/nphoton.2010.35 fatcat:o42skjlajja4bifyoadf7bgjy4

The heralded amplification for the single-photon entanglement of the time-bin qubit [article]

Lan Zhou, Yu-Bo Sheng
2016 arXiv   pre-print
We put forward an effective amplification protocol for protecting the single-photon entangled state of the time-bin qubit.  ...  With the help of the 50:50 beam splitters, variable beam splitters with the transmission of t and the polarizing beam splitters, we can increase the fidelity of the single-photon entangled state under  ...  For example, in 2012, Osorio et al. experimentally realized the heralded noiseless amplification based on the single-photon sources and the linear optics [39] .  ... 
arXiv:1605.09480v1 fatcat:kpez363f3rghnmv4vnb5m5re34

Undoing the effect of loss on quantum entanglement

Alexander E. Ulanov, Ilya A. Fedorov, Anastasia A. Pushkina, Yury V. Kurochkin, Timothy C. Ralph, A. I. Lvovsky
2015 Nature Photonics  
Here we report an experiment on distilling the Einstein-Podolsky-Rosen (EPR) state of light, the workhorse of continuous-variable entanglement, using the technique of noiseless amplification.  ...  In contrast to previous implementations, the entanglement enhancement factor achievable by our technique is not fundamentally limited and permits recovering an EPR state with a macroscopic level of entanglement  ...  Adesso for discussions and the Russian Quantum Center for support.  ... 
doi:10.1038/nphoton.2015.195 fatcat:odvodattbjfb3js3hyloyjkqdy

Engineering quantum operations on traveling light beams by multiple photon addition and subtraction

Jaromír Fiurášek
2009 Physical Review A. Atomic, Molecular, and Optical Physics  
We propose and investigate an optical scheme for probabilistic implementation of an arbitrary single-mode quantum operation that can be expressed as a function of photon number operator.  ...  The scheme coherently combines multiple photon addition and subtraction and is feasible with current technology.  ...  Filip for stimulating discussions. This work was supported by MSMT under projects LC06007, MSM6198959213, and 7E08028, by GACR under project No.  ... 
doi:10.1103/physreva.80.053822 fatcat:wmyhez4xvzab5oxxdsnqqut2uq

The effective protection protocol of single photon state from photon loss and decoherence [article]

Lan Zhou, Yu-Bo Sheng
2016 arXiv   pre-print
By operating the protocol, the photon loss can be effectively decreased and the less entangled single photon state can be recovered to the maximally entangled state with some probability.  ...  We design an effect protocol for protecting the single-photon entanglement from photon loss and decoherence. The protocol only requires some auxiliary single photons and the linear optical elements.  ...  The photon noiseless linear amplification (NLA) is the powerful way to overcome the photon loss, which was first proposed by Ralph and Lund [24] .  ... 
arXiv:1605.09481v1 fatcat:pcteb3qv5jcubdtj6hqemp7dfq

Experimental realization of a nondeterministic optical noiseless amplifier

Franck Ferreyrol, Rémi Blandino, Marco Barbieri, Rosa Tualle-Brouri, Philippe Grangier
2011 Physical Review A. Atomic, Molecular, and Optical Physics  
Here we present a detailed analysis of a noiseless amplifier, implemented using linear optics, a down-conversion-based single-photon source, and single-photon detection.  ...  Our results demonstrate an amplification adding a level of noise lower than the minimum allowed by quantum mechanics for deterministic amplifiers.  ...  Leverrier for discussions. This work is supported by the EU project COMPAS and the ANR SEQURE. FF is supported by C'Nano,Île de France.  ... 
doi:10.1103/physreva.83.063801 fatcat:g5bkudbdcfa4ffkeq7ybpon4ki

Efficient Concentration Protocols for the Single-Photon Entanglement State with Polarization Feature

Lan Zhou, Dan-Dan Wang, Xing-Fu Wang, Shi-Pu Gu, Yu-Bo Sheng
2017 Frontiers in Physics  
We propose two efficient entanglement concentration protocols (ECPs) for arbitrary less-entangled single-photon entanglement state, in which the photon qubit has the polarization feature.  ...  First, they can preserve the polarization feature of the photon qubit, while all the other existing ECPs for single photon state cannot achieve this goal.  ...  Different with the previous amplification protocols for the single photon qubits [70] [71] [72] [73] [74] , the protocol designed a coherent two-mode amplifier, and can realize the heralded noiseless  ... 
doi:10.3389/fphy.2017.00009 fatcat:a2axt4l6rjew5kbxwsugxqo36e

Distillation of The Two-Mode Squeezed State

Yury Kurochkin, Adarsh S. Prasad, A. I. Lvovsky
2014 Physical Review Letters  
Applying the annihilation operator to both modes, we increase the fraction of the two-photon component in the state, resulting in the increase of both squeezing and entanglement by about 50%.  ...  We experimentally demonstrate entanglement distillation of the two mode squeezed state.  ...  For example, a procedure involving noiseless amplification [31] in both modes has no fundamental limitation on the achievable entanglement increase factor.  ... 
doi:10.1103/physrevlett.112.070402 pmid:24579571 fatcat:6l4dszeivbhkzktj7eoxmuhegi

Production and applications of non-Gaussian quantum states of light [article]

A. I. Lvovsky, Philippe Grangier, Alexei Ourjoumtsev, Valentina Parigi, Masahide Sasaki, Rosa Tualle-Brouri
2020 arXiv   pre-print
Starting with basic Gaussian nonclassicality associated with single- and two-mode vacuum states produced by means of parametric down-conversion and applying a set of standard tools, such as linear interferometry  ...  states, into the domain of "non-Gaussian" states with negative Wigner functions.  ...  Noiseless linear amplification of a qubit encoded in the polarization state of a single photon has also been demonstrated (Kocsis et al., 2013) .  ... 
arXiv:2006.16985v1 fatcat:kg3yatalhveuvfuka7my7h5y2y

Heralded processes on continuous-variable spaces as quantum maps

Franck Ferreyrol, Nicolò Spagnolo, Rémi Blandino, Marco Barbieri, Rosa Tualle-Brouri
2012 Physical Review A. Atomic, Molecular, and Optical Physics  
We also reconstruct the maps of two relevant examples of conditional process, that is, noiseless amplification and photon addition, by combining experimental data and a detailed physical model.  ...  However, tools are lacking for a convenient representation of heralded process in terms of quantum maps for continuous variable states, in the same way as Wigner functions are able to give a compact description  ...  The noiseless amplification process occurs conditionally with the detection of a photon on detector D 1 .  ... 
doi:10.1103/physreva.86.062327 fatcat:2m36answqjdhtltcn4rq5zp3ae

Heralded preparation of polarization entanglement via quantum scissors

Dat Thanh Le, Warit Asavanant, Nguyen Ba An
2021 Physical Review A  
In this work, we propose a scheme to prepare multipartite entangled states of polarized photons in a heralded manner, i.e., without postselection.  ...  Our work illustrates an interface between various types of optical entanglement and the proposed quantum scissors techniques could serve as alternative methods for heralded generation of polarization entanglement  ...  polarized single photons and polarized coherent states in Eq  ... 
doi:10.1103/physreva.104.012612 fatcat:lbolfioqljfqfoyroarm3gihem

Photonic quantum information processing: A concise review

Sergei Slussarenko, Geoff J. Pryde
2019 Applied Physics Reviews  
The quantum states of individual photons can be manipulated with very high precision using interferometry, an experimental staple that has been under continuous development since the 19th century.  ...  Quantum entanglement, teleportation, quantum key distribution and early quantum computing demonstrations were pioneered in this technology because photons represent a naturally mobile and low-noise system  ...  ACKNOWLEDGMENTS This work was conducted by the ARC Centre of Excellence for Quantum Computation and Communication Technology under Grant No. CE170100012.  ... 
doi:10.1063/1.5115814 fatcat:7dr77ktrdbespgi2ry3yxp5s3i

Limits on the heralding efficiencies and spectral purities of spectrally filtered single photons from photon-pair sources

Evan Meyer-Scott, Nicola Montaut, Johannes Tiedau, Linda Sansoni, Harald Herrmann, Tim J. Bartley, Christine Silberhorn
2017 Physical Review A  
Photon pairs produced by parametric down-conversion or four-wave mixing can interfere with each other in multiport interferometers, or carry entanglement between distant nodes for use in entanglement swapping  ...  For heralded single photons high purity and heralding efficiency is possible by filtering the heralding arm, but when both photons in typical pair sources are filtered, we show that the heralding efficiency  ...  [24, 27, 35] , entanglement swapping [6, [14] [15] [16] 36] , heralded noiseless qubit amplification [37, 38] , quantum repeater networks [39] [40] [41] , and certain multiphoton phase-estimation  ... 
doi:10.1103/physreva.95.061803 fatcat:3fqg6x5tvnce5jqyo5b2kxwcnq

Prospective applications of optical quantum memories

Félix Bussières, Nicolas Sangouard, Mikael Afzelius, Hugues de Riedmatten, Christoph Simon, Wolfgang Tittel
2013 Journal of Modern Optics  
An optical quantum memory can be broadly defined as a system capable of storing a useful quantum state through interaction with light at optical frequencies.  ...  Along the way, other exciting applications emerged, such as as quantum metrology, single-photon detection, tests of the foundations of quantum physics, device-independent quantum information processing  ...  Acknowledgements We thank Almut Beige, Christoph Clausen, Nicolas Gisin, Pavel Sekatski, Nuala Timoney and Philipp Treutlein for stimulating discussions and for careful reading of the manuscript.  ... 
doi:10.1080/09500340.2013.856482 fatcat:jlhs62yu6fbbtb6wwiad2qr7bm

Device-independent quantum key distribution with single-photon sources [article]

Jan Kołodyński, Alejandro Máttar, Paul Skrzypczyk, Erik Woodhead, Daniel Cavalcanti, Konrad Banaszek, Antonio Acín
2020 arXiv   pre-print
Here, we introduce novel photonic protocols for device-independent quantum key distribution exploiting single-photon sources and heralding-type architectures.  ...  We then show how the use of single-photon sources for entanglement distribution in these architectures, instead of standard entangled-pair generation schemes, provides significant improvements on the attainable  ...  DIQKD schemes with single-photon sources The SH scheme requires Bob to produce two single photons with orthogonal polarizations H and V , while Alice has access to entangled photon-pairs produced by an  ... 
arXiv:1803.07089v4 fatcat:qqbldwmirvb4pelkyi3dligecq
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