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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Advances in InGaAs/InP single-photon detector systems for quantum communication
TL;DR: This Review aims to introduce the technology advances of InGaAs/InP single-photon detector systems in the telecom wavelengths and the relevant quantum communication applications, and particularly to highlight recent emerging techniques such as high-frequency gating at GHz rates and free-running operation using negative-feedback avalanche diodes.
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Hyperconcentration for multipartite entanglement via linear optics
TL;DR: In this paper, a hyperconcentration scheme for nonlocal N-photon hyperentangled Greenberger-Horne-Zeilinger states was proposed, in which N particles are entangled simultaneously in the polarization and the spatial mode.
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Quantum tasks in Minkowski space
TL;DR: In this article, a general framework for defining tasks within (special) relativistic quantum theory and illustrate it with examples from relativist quantum cryptography and relativists distributed quantum computation is presented.
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Experimental time-reversed adaptive Bell measurement towards all-photonic quantum repeaters.
Yasushi Hasegawa,Rikizo Ikuta,Nobuyuki Matsuda,Kiyoshi Tamaki,Hoi-Kwong Lo,Takashi Yamamoto,Koji Azuma,Nobuyuki Imoto +7 more
TL;DR: A modified scheme for Bell state measurements which reduces the necessary resources for realising such an all-photonic repeater, and a proof-of-principle implementation of the implementation are shown.
Journal ArticleDOI
Photon statistics and polarization correlations at telecommunications wavelengths from a warm atomic ensemble.
TL;DR: The heralded autocorrelation is measured and it is seen that coincidences are suppressed by a factor of ≈ 20 from a Poissonian source at a generation rate of 1500 s(-1), a heralding efficiency of 10%, and a narrow spectral width.