Proceedings Article10.1117/12.2179906
A continuous-variable quantum key distribution using correlated photons
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TL;DR: A quantum key distribution system based on the generation and transmission of random continuous variables in time, energy (frequency), phase, and photon number, which offers a higher level of security against individual or multi-attacks.
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Abstract: We propose a quantum key distribution system based on the generation and transmission of random continuous variables in time, energy (frequency), phase, and photon number. The bounds for quantum measurement in our scheme are determined by the uncertainty principle, rather than single quadrature measurements of entangled states, or the no-cloning of (unknown) single quantum states. Correlated measurements are performed in the energy-time, and momentum-displacement frames. As a result the QKD protocols for generation of raw-keys, sifted-keys and privacy amplifications offer a higher level of security against individual or multi-attacks. The network architecture is in a plug-and-play configuration; the QKD protocol; determination of quantum bit error rate, and estimation of system performance in the presence of eavesdropping are presented.
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Citations
A continuous-variable quantum key distribution using correlated photons
Eric Donkor,Patrick D. Kumavor +1 more
- 30 May 2022
TL;DR: This work presents a quantum key generation and distribution scheme that utilizes a frequency-comb signal source for key encryption, data encoding and transmission between network users and determines the efficiency of the scheme against malicious multiple attacks.
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Quantum cryptography
TL;DR: A protocol for coin-tossing by exchange of quantum messages is presented, which is secure against traditional kinds of cheating, even by an opponent with unlimited computing power, but ironically can be subverted by use of a still subtler quantum phenomenon, the Einstein-Podolsky-Rosen paradox.
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Unconditional security proof of long-distance continuous-variable quantum key distribution with discrete modulation
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