High-Performance NOON State from a Quantum Dot Single Photon for Supersensitive Optical Phase Measurement-Reference-Cited by-同舟云学术

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

Published:2024-05-27 Issue:6 Volume:11 Page:512
ISSN:2304-6732
Container-title:Photonics
language:en
Short-container-title:Photonics

Author:

Rao Zhixuan¹,Yang Jiawei¹,Liu Luyu¹,Yu Ying¹²

Affiliation:

1. State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510006, China

2. Hefei National Laboratory, Hefei 230088, China

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.

Funder

National Key R&D Program of Guang-dong Province

Science and Technology Program of Guangzhou

Innovation Program for Quantum Science and Technology

National Natural Science Foundation of China

Publisher

MDPI AG

Link

https://www.mdpi.com/2304-6732/11/6/512/pdf

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