Journal ArticleDOI
Quantum cryptography based on Bell's theorem.
TLDR
Practical application of the generalized Bells theorem in the so-called key distribution process in cryptography is reported, based on the Bohms version of the Einstein-Podolsky-Rosen gedanken experiment andBells theorem is used to test for eavesdropping.Abstract:
Practical application of the generalized Bells theorem in the so-called key distribution process in cryptography is reported. The proposed scheme is based on the Bohms version of the Einstein-Podolsky-Rosen gedanken experiment and Bells theorem is used to test for eavesdropping. © 1991 The American Physical Society.read more
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Journal ArticleDOI
Semiquantum-key distribution using less than four quantum states
TL;DR: In this paper, Boyer et al. presented five different SQKD protocols in which Alice sends three quantum states, two quantum states and one quantum state, respectively, and proved that all the five protocols are completely robust.
Journal ArticleDOI
Deterministic secure direct communication using GHZ states and swapping quantum entanglement
TL;DR: In this paper, a deterministic secure direct communication scheme via entanglement swapping is presented, where a set of ordered maximally entangled three-particle states (GHZ states), initially shared by three spatially separated parties, Alice, Bob and Charlie, functions as a quantum information channel.
Journal ArticleDOI
Coexistence of High-Bit-Rate Quantum Key Distribution and Data on Optical Fiber
K. A. Patel,K. A. Patel,James F. Dynes,Iris Choi,Andrew W. Sharpe,Alex Dixon,Zhiliang Yuan,Richard V. Penty,Andrew J. Shields +8 more
TL;DR: In this paper, the authors exploit a novel temporal-filtering effect for noisephoton rejection for high-bit-rate QKD over fibers up to 90 km in length and populated with error-free bidirectional Gb=s data communications.
Journal ArticleDOI
Device-independent quantum secure direct communication against collective attacks
Lan Zhou,Yu-Bo Sheng,Gui-Lu Long +2 more
TL;DR: The first device-independent quantum secure direct communication protocol (DI-QSDC) is put forward and its security and communication efficiency against collective attacks are analyzed and noiseless linear amplification (NLA) protocol and entanglement purification protocol (EPP) are modified.
Journal ArticleDOI
Entanglement of a Photon and a Collective Atomic Excitation
Dzmitry Matsukevich,Thierry Chanelière,Mishkatul Bhattacharya,Shau-Yu Lan,Stewart D. Jenkins,T. A. B. Kennedy,Alex Kuzmich +6 more
TL;DR: A new experimental approach to probabilistic atom-photon (signal) entanglement is described and Polarization states of both the signal and the idler are recorded and are found to be in violation of the Bell inequality.