Open AccessInfluence of multiphoton events on the quantum enhanced phase estimation
Author(s) -
Mingran Zhang,
Long Huang,
Yang Liu,
Wei Zhao,
Weiqiang Wang
Publication year - 2022
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.468727
Subject(s) - quantum metrology , metrology , quantum imaging , quantum sensor , quantum , quantum limit , nondeterministic algorithm , physics , optics , photon , noise (video) , quantum noise , heisenberg limit , phase (matter) , quantum technology , statistical physics , quantum information , quantum mechanics , computer science , algorithm , open quantum system , quantum network , artificial intelligence , image (mathematics)
Quantum metrology can approach measurement precision of Heisenberg Limit using an ideal quantum source, which has attracted a great interest in fundamental physical studies. However, the quantum metrology precision is impressionable to the system noise in experiments. In this paper, we analyze the influence of multiphoton events on the phase estimation precision when using a nondeterministic single photon source. Our results show there are an extra bias and quantum enhanced region restriction due to multiphoton events, which declines the quantum phase estimation precision. A limitation of multiphoton probability is obtained for quantum enhanced phase estimation accuracy under different experimental model. Our results provide beneficial suggestions for improving quantum metrology precision in future experiments.