Generating Discorrelated States for Quantum Information Protocols by Coherent Multimode Photon Addition

Year: 2021

Authors: Biagi N., Costanzo L. S., Bellini M., Zavatta A.

Autors Affiliation: Istituto Nazionale di Ottica (CNR-INO)Largo Enrico Fermi 6, Florence 50125, Italy

LENS and Department of Physics & AstronomyUniversity of Firenze, 50019 Sesto Fiorentino, Florence, Italy

Abstract: It is demonstrated that the recently developed technique of delocalized single photon addition may generate discorrelation, a new joint statistical property of multimode quantum light states, whereby the number of photons in each mode can take any value individually, but two modes together never exhibit the same. By coherently adding a single photon to two identical coherent states of light in different temporal modes, the first experimental observation of discorrelation is provided. The capability of manipulating this statistical property has applications in scenarios involving the secure distribution of information among untrusted parties, like in the so-called “mental poker” games.


Volume: 4 (5)      Pages from: 200014-1  to: 200014-6

More Information: The authors gratefully acknowledge the support of the EU under the FET Flagship on Quantum Technologies project “Qombs” (Grant No. 820419) and the ERA-NET QuantERA project “ShoQC” (Grant No. 731473).
KeyWords: Quantum Optics, Homodyne Detection, Single Photon, Entanglement, Photon Statistic, Mental Poker, Secure Voting Scheme
DOI: 10.1002/qute.202000141

Citations: 6
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