Efficient experimental quantum fingerprinting with channel multiplexing and simultaneous detection.

ABSTRACT: Quantum communication complexity explores the minimum amount of communication required to achieve certain tasks using quantum states. One representative example is quantum fingerprinting, in which the minimum amount of communication could be exponentially smaller than the classical fingerprinting. Here, we propose a quantum fingerprinting protocol where coherent states and channel multiplexing are used, with simultaneous detection of signals carried by multiple channels. Compared with an existing coherent quantum fingerprinting protocol, our protocol could consistently reduce communication time and the amount of communication by orders of magnitude by increasing the number of channels. Our proposed protocol can even beat the classical limit without using superconducting-nanowire single pho

SUBMITTER: Zhong X 

PROVIDER: S-EPMC8298536 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature