Quantum fingerprinting using two-photon interference

Optics Express
Michał JachuraKonrad Banaszek

Abstract

We present a quantum fingerprinting protocol relying on two-photon interference which does not require a shared phase reference between the parties preparing optical signals carrying data fingerprints. We show that the scaling of the protocol, in terms of transmittable classical information, is analogous to the recently proposed and demonstrated scheme based on coherent pulses and first-order interference, offering comparable advantage over classical fingerprinting protocols without access to shared prior randomness. We analyze the protocol taking into account non-Poissonian photon statistics of optical signals and a variety of imperfections, such as transmission losses, dark counts, and residual distinguishability. The impact of these effects on the protocol performance is quantified with the help of Chernoff information.

References

Nov 2, 1987·Physical Review Letters·C K HongL Mandel
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Aug 12, 2014·Physical Review Letters·Robert J CollinsGerald S Buller
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Jul 2, 2016·Physical Review Letters·Jian-Yu GuanJian-Wei Pan
Feb 25, 2017·Physical Review Letters·Radosław ChrapkiewiczWojciech Wasilewski

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Citations

Mar 31, 2018·Physical Review Letters·Michał JachuraKonrad Banaszek
Jul 2, 2021·Optics Letters·Michał Lipka, Michał Parniak

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