Heralded amplification of path entangled quantum states

Monteiro, Filipa; Verbanis, Ephanielle; Vivoli, Valentina Caprara; Martin, Anthony; Gisin, Nicolas; Zbinden, Hugo; Thew, Rob

doi:10.1088/2058-9565/aa70ad

Cited by 27 publications

(21 citation statements)

References 39 publications

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“…Since the first demonstrations [306][307][308] , NLA has been actively researched in both the discrete-variable (photon) and continuous-variables communities. It has shown the ability to amplify polarization 309 , path 310 and time-bin 311 qubits, and has been used to restore mode entanglement that was degraded due to loss 306,310,312 .…”

Section: Networking Quantum Processorsmentioning

confidence: 99%

Photonic quantum information processing: A concise review

Slussarenko

Pryde

2019

Applied Physics Reviews

484

308

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Photons have been a flagship system for studying quantum mechanics, advancing quantum information science, and developing quantum technologies. 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 with quantum-limited detection readily available. 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. The complexity of photonic quantum computing device and protocol realizations has raced ahead as both underlying technologies and theoretical schemes have continued to develop. Today, photonic quantum computing represents an exciting path to medium-and large-scale processing. It promises to out aside its reputation for requiring excessive resource overheads due to inefficient two-qubit gates. Instead, the ability to generate large numbers of photons-and the development of integrated platforms, improved sources and detectors, novel noise-tolerant theoretical approaches, and more-have solidified it as a leading contender for both quantum information processing and quantum networking. Our concise review provides a flyover of some key aspects of the field, with a focus on experiment. Apart from being a short and accessible introduction, its many references to in-depth articles and longer specialist reviews serve as a launching point for deeper study of the field. CONTENTS arXiv:1907.06331v1 [quant-ph]

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Section: Networking Quantum Processorsmentioning

confidence: 99%

Photonic quantum information processing: A concise review

Slussarenko

Pryde

2019

Applied Physics Reviews

484

308

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“…In this way, Bob can finally make the HOM interference measurement [75,76]. After the BS1, | 3 a1b2b5b6 will evolve to:…”

Section: The First Ecp For the Single-photon Spatial Entanglementmentioning

confidence: 99%

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

Zhou

Wang

et al. 2017

Front. Phys.

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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. The first ECP is in linear optics, and the second ECP is in nonlinear optics. The two ECPs have some attractive advantages. 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. Second, they only require one pair of less-entangled single-photon entanglement state and some auxiliary single photons. Third, they only require local operations. Especially, the second ECP can be used repeatedly, which can increase its success probability largely. Based on above properties, our two ECPs, especially the second one may be useful in current and future quantum communication.

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“…Second, as there is in principle no way of distinguishing the entanglement with an eavesdropper (Eve) (caused by his measurements) from the entanglement with the environment (caused by environmental noise), Eve has an opportunity to steal some secret information without being detected even within the tolerate communication distance. The noiseless linear amplification (NLA) is an efficient method to solve the transmission photon loss problem [40][41][42][43][44][45][46][47]. Especially, some NLA protocols have been adopted in the DI-QKD protocols [37,[44][45][46].…”

Section: Introductionmentioning

confidence: 99%