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Single-photon entanglement concentration for long-distance quantum communication [article]

Yu-Bo Sheng, Fu-Guo Deng, Hong-Yu Zhou
2010 arXiv   pre-print
We present a single-photon entanglement concentration protocol for long-distance quantum communication with quantum nondemolition detector.  ...  It is the first concentration protocol for single-photon entangled states and it dose not require the two parties of quantum communication to know the accurate information about the coefficient α and β  ...  However, this single-photon entanglement concentration protocol works for neighbor nodes in a long-distance quantum communication.  ... 
arXiv:0907.0050v2 fatcat:5ofen7oqcrfffouadag5oxvpnu

PHYSICS: Teleporting a Quantum State to Distant Matter

M. S. Kim, J. Cho
2009 Science  
Spins, atoms, and ions are well suited for logical gate operations and storage, whereas photons are advantageous for long-distance communication.  ...  Thus, the development of atom-photon entanglement has been an important prerequisite to the transmission of quantum states over long distances between atoms by photonic qubit states.  ...  Spins, atoms, and ions are well suited for logical gate operations and storage, whereas photons are advantageous for long-distance communication.  ... 
doi:10.1126/science.1169279 pmid:19164736 fatcat:hxxwuj7gozhazfgh5un7vk77cm

Entanglement concentration of W-class states on nonlocal atoms using low-Q optical cavity

Shao-Ming Fei
2016 Science China Information Sciences  
Therefore, in long distance quantum communication and quantum communication network, quantum repeaters are required.  ...  The entanglement concentration is a useful quantum technique for depressing the decoherence of the entanglement, which provides an interesting possibility for the remote parties in quantum communication  ...  Therefore, in long distance quantum communication and quantum communication network, quantum repeaters are required.  ... 
doi:10.1007/s11432-016-0686-x fatcat:w3tv7vrcbvb25aivyrnvasya2m

An architecture for quantum networking of neutral atom processors [article]

C. B. Young, A. Safari, P. Huft, J. Zhang, E. Oh, R. Chinnarasu, M. Saffman
2022 arXiv   pre-print
We compare the achievable rates of remote entanglement generation for two optical approaches: free space photon collection with a lens and a near-concentric, long working distance resonant cavity.  ...  Development of a network for remote entanglement of quantum processors is an outstanding challenge in quantum information science.  ...  This capability will enable distributed quantum computation and sensing, as well as secure long distance communication based on networked quantum repeaters, each containing an interface between stationary  ... 
arXiv:2202.01634v3 fatcat:y3bb4luxw5gjrpnn66qymji5m4

Efficient single-photon entanglement concentration for quantum communications [article]

Lan Zhou
2012 arXiv   pre-print
We present two protocols for the single-photon entanglement concentration.  ...  All these advantages may make our protocols useful in the long-distance quantum communication.  ...  The most important application of the single-photon entanglement may be the quantum repeater protocol in long-distance quantum communication.  ... 
arXiv:1209.6517v1 fatcat:vr2kkqtayje7jm4le2vflaix54

Entanglement distillation for quantum communication network with atomic-ensemble memories

Tao Li, Guo-Jian Yang, Fu-Guo Deng
2014 Optics Express  
Here we investigate the possibility of achieving the entanglement distillation for nonlocal atomic ensembles by the input-output process of a single photon as a result of cavity quantum electrodynamics  ...  Atomic ensembles are effective memory nodes for quantum communication network due to the long coherence time and the collective enhancement effect for the nonlinear interaction between an ensemble and  ...  [43] , the atomic ensemble is utilized to be a local memory node [15] for long-distance quantum communication.  ... 
doi:10.1364/oe.22.023897 pmid:25321967 fatcat:pm6zwzx6kvc4hknsfe6dz5qlg4

Backward propagating quantum repeater protocol with multiple quantum memories [article]

Yuhei Sekiguchi, Satsuki Okumura, Hideo Kosaka
2022 arXiv   pre-print
Quantum repeaters with multiple quantum memories provide high throughput, low latency, and high fidelity quantum state (qubit) transfer over long distances.  ...  for distributed quantum computation and quantum Internet.  ...  Acknowledgments We thank Yuichiro Matsuzaki and Kae Nemoto for their discussions. This work was supported by Japan Society  ... 
arXiv:2205.04243v1 fatcat:iqgjx34rj5gpdmyypj2n6wbheu

Towards real-world quantum networks: a review [article]

Shi-Hai Wei, Bo Jing, Xue-Ying Zhang, Jin-Yu Liao, Chen-Zhi Yuan, Bo-Yu Fan, Chen Lyu, Dian-Li Zhou, You Wang, Guang-Wei Deng, Hai-Zhi Song, Daniel Oblak (+2 others)
2022 arXiv   pre-print
One of the key challenges for implementing a quantum network is to distribute entangled flying qubits to spatially separated nodes, at which quantum interfaces or transducers map the entanglement onto  ...  Quantum networks play an extremely important role in quantum information science, with application to quantum communication, computation, metrology and fundamental tests.  ...  Duan et al. proposed a scheme based on single-photon detection to implement a quantum repeater and realize scalable long-distance quantum communication with CAEs[78].  ... 
arXiv:2201.04802v1 fatcat:xoemirxeb5bm3a3dgs5z3kwjda

Hyperentanglement concentration for time-bin and polarization hyperentangled photons [article]

Xihan Li, Shohini Ghose
2015 arXiv   pre-print
Using the time-bin degree of freedom rather than the spatial mode degree of freedom can provide savings in quantum resources, which makes our schemes practical and useful for long-distance quantum communication  ...  We present two hyperentanglement concentration schemes for two-photon states that are partially entangled in the polarization and time-bin degrees of freedom.  ...  Entangled photon systems can serve as a quantum channel in many long-distance quantum communication schemes such as quantum key distribution [2, 3] , dense coding [5, 23] , teleportation [6] , quantum  ... 
arXiv:1502.02891v3 fatcat:og2ko6pctvcunfmcuvqahdnnou

Quantum communication

Nicolas Gisin, Rob Thew
2007 Nature Photonics  
Quantum communication, and indeed quantum information in general, has changed the way we think about quantum physics.  ...  In 1984 and 1991, the first protocol for quantum cryptography and the first application of quantum non-locality, respectively, attracted a diverse field of researchers in theoretical and experimental physics  ...  IST-015848) and by the Swiss NCCR Quantum Photonics.  ... 
doi:10.1038/nphoton.2007.22 fatcat:ysme4re26vcwldjxydgmfbo3jq

How far can one send a photon?

Nicolas Gisin
2015 Frontiers of Physics  
For direct quantum communication the limit is of about 500 km.  ...  For terrestrial quantum communication, near future technologies based on quantum teleportation and quantum memories will soon enable quantum repeaters that will turn the development of a world-wide-quantum-web  ...  Acknowledgements It is a pleasure to thank Hugo Zbinden, Rob Thew, and Natalia Bruno for useful comments and help with the figures. Financial support by the Swiss NCCR-QSIT and the  ... 
doi:10.1007/s11467-015-0485-x fatcat:6akjt6okbfb3bn5ancyoxxsduy

Complete hyperentangled Bell state analysis for polarization and time-bin hyperentanglement

Xi-Han Li, Shohini Ghose
2016 Optics Express  
This is the first complete hyperentangled Bell state analysis scheme for polarization and time-bin hyperentangled states, and it can provide new avenues for high-capacity, long-distance quantum communication  ...  for two spatial modes for each photon.  ...  Entanglement swapping is an important constituent for quantum repeaters in long-distance communication. The channel capacity of both protocols can be increased with hyperentangled states.  ... 
doi:10.1364/oe.24.018388 pmid:27505802 fatcat:ilbo6mllljeilohx7mldsq7eri

Optimal entanglement concentration for quantum dot and optical microcavities systems [article]

Yu-Bo Sheng, Lan Zhou, Lei Wang, Sheng-Mei Zhao
2012 arXiv   pre-print
With the feasible technology, this protocol may be useful in current long-distance quantum communications.  ...  In his paper, each two-electron spin system in a partially entangled state can be concentrated with the assistance of an ancillary quantum dot and a single photon.  ...  For most of the practical quantum communication and computation protocols, the maximally entangled states are usually required.  ... 
arXiv:1207.5196v1 fatcat:lk2jjwzconbadfvagjgct4saom

Efficient single-photon entanglement concentration for quantum communications

Lan Zhou, Yu-Bo Sheng
2014 Optics Communications  
We present two groups of practical entanglement concentration protocols (ECPs) for optical hybrid entangled state (HES).  ...  These protocols may be useful in current hybrid quantum communication.  ...  INTRODUCTION The distribution of entanglement over long-distances is essential for potential future application for quantum communication [1, 2] , such as teleportation [3] , quantum key distribution  ... 
doi:10.1016/j.optcom.2013.10.041 fatcat:4fbgutop3zb3lkzvmzggik2ei4

Two-photon comb with wavelength conversion and 20-km distribution for quantum communication

Kazuya Niizeki, Daisuke Yoshida, Ko Ito, Ippei Nakamura, Nobuyuki Takei, Kotaro Okamura, Ming-Yang Zheng, Xiu-Ping Xie, Tomoyuki Horikiri
2020 Communications Physics  
The presented implementation promises an efficient method for entanglement distribution that is compatible with quantum memory and frequency-multiplexed long-distance quantum communication applications  ...  However, long-distance quantum communication is challenging mainly because of optical fiber losses; quantum repeaters are indispensable for fiber-based transmission because unknown quantum states cannot  ...  However, long-distance quantum communication involves challenges due to losses in optical fibers, where unknown quantum states cannot be amplified with certainty, resulting in the need for a quantum repeater  ... 
doi:10.1038/s42005-020-00406-1 fatcat:4gt6hlbs4rcc3kf3246mzojyvu
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