Enhancing Photon Indistinguishability of Spectrally Mismatched Single Photons by Cavity Floquet Engineering

Physical Review Letters 2026

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Authors: Jiawang Yu, X. R. Zhou, Zhi-Bo Ni, Xiao-Tian Cheng, Yi Zhao, Huihui Zhu, Chen‐Hui Li, Feng Liu, Chao‐Yuan Jin
DOI: 10.1103/ww5v-ct3q
Cited by: 1
References: 76

Abstract

We theoretically propose a scheme to enhance the photon indistinguishability of spectrally mismatched single photons via Floquet-engineered optical frequency combs in cavity quantum electrodynamic systems. By periodically modulating two distinct single-photon states under a modulation frequency which is exactly equal to the spectral mismatch of two cavity modes, a pair of single-photon frequency-comb states is prepared energy-conservatively based on full unitary operations. The two states show high indistinguishability with an ideal g_{HOM}^{(2)}(0) down to zero due to the superposition of intensity-matched single-photon states coherently distributed across the teeth of the combs.

Fields of Study & Subjects

Quantum Information and Cryptography Quantum optics and atomic interactions Mechanical and Optical Resonators

Publication details

Journal / source
Physical Review Letters
Publisher
American Physical Society (APS)
Volume
136
Issue
5
Pages
053601–053601
Publication date
7 January 2026
Language
EN