Quantum key distribution using a thermal source

Qi, Bing; Evans, Philip G.; Grice, Warren P.

Title: Quantum key distribution using a thermal source

Patent · Tue Feb 22 00:00:00 EST 2022

OSTI ID:1892652

Qi, Bing; Evans, Philip G.; Grice, Warren P.

A passive continuous-variable quantum key distribution scheme, where Alice splits the output of a thermal source into two spatial modes, measures one locally and transmits the other mode to Bob after applying attenuation. A secure key can be established based on measurements of the two modes without the use of a random number generator or an optical modulator.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-00OR22725

Assignee:: UT-Battelle, LLC (Oak Ridge, TN)

Patent Number(s):: 11,258,594

Application Number:: 16/197,457

OSTI ID:: 1892652

Resource Relation:: Patent File Date: 11/21/2018

Country of Publication:: United States

Language:: English

References (15)

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Passive state preparation in the Gaussian-modulated coherent-states quantum key distribution Qi, Bing; Evans, Philip G.; Grice, Warren P. Physical Review A, Vol. 97, Issue 1 https://doi.org/10.1103/PhysRevA.97.012317	journal	January 2018
High-speed autocompensation scheme of quantum key distribution Duplinskiy, Alexandr Valerievich; Ustimchik, Vasily Evgenyevich; Kurochkin, Yuri Vladimirovich https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/10171237 US Patent Document 10,171,237	patent	January 2019
Simultaneous classical and quantum communication scheme based on coherent detection Qi, Bing https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20180316496 US Patent Application 15/952873; 20180316496	patent-application	November 2018
Polarization to phase converter Lutkenhaus, Norbert https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8068741 US Patent Document 8,068,741	patent	November 2011
Quantum random number generator Qi, Bing https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/10585645 US Patent Document 10,585,645	patent	March 2020
Device for generating polarization-entangled photons Pacher, Christoph; Finger, Norman https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8244082 US Patent Document 8,244,082	patent	August 2012
Apparatus for Synchronizing Digital Signals of Coherent Optical Receiver Chang, Sun-hyok; Chung, Hwan-seok; Kim, Kwang-joon https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20100142971 US Patent Application 12/628920; 20100142971	patent-application	June 2010
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True randomness from an incoherent source Qi, Bing Review of Scientific Instruments, Vol. 88, Issue 11 https://doi.org/10.1063/1.4986048	journal	November 2017
High-rate quantum key distribution scheme relying on continuously phase and amplitude-modulated coherent light pulses Cerf, Nicolas; Brouri-Tualle, Rosa; Grangier, Philippe https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7403623 US Patent Document 7,403,623	patent	July 2008
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Multidimensional coded modulation for wireless communications with physical layer security Djordjevic, Ivan B.; Wang, Ting; Zhang, Shaoliang https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/10574448 US Patent Document 10,574,448	patent	February 2020
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