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High-Performance NOON State from a Quantum Dot Single Photon for Supersensitive Optical Phase Measurement.

Authors :
Rao, Zhixuan
Yang, Jiawei
Liu, Luyu
Yu, Ying
Source :
Photonics; Jun2024, Vol. 11 Issue 6, p512, 11p
Publication Year :
2024

Abstract

We investigate the utilization of advanced single photons produced by quantum dots (QDs) in a microcavity for quantum metrology. Through the integration of lateral excitation and the Purcell effect in an Fabry–Perot microcavity, we realized single-photon emission with an extraction efficiency of 46.39%, high purity of 96.91%, and high indistinguishability of 98.32%. Our QD-generated single photons enabled the creation of high-quality NOON states (N = 2) for phase measurement, yielding an interference contrast of 79.79% and surpassing the standard quantum limit (SQL) with phase super-sensitivity. Our results underscore the immense potential of QD-derived single photons for propelling quantum metrology forward, facilitating enhanced precision measurements across diverse applications. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
23046732
Volume :
11
Issue :
6
Database :
Complementary Index
Journal :
Photonics
Publication Type :
Academic Journal
Accession number :
178196093
Full Text :
https://doi.org/10.3390/photonics11060512