Quantum Interference Amplifies Weak Chirality into Giant Quantum Nonreciprocity
Abstract
Quantum nonreciprocity at few-photon level typically requires strong symmetry breaking, posing significant experimental challenges. Here we demonstrate that phase-controlled quantum interference can amplify weak chirality into giant quantum nonreciprocity. We consider two phase-programmable atoms coupled to a spinning whispering-gallery-mode resonator, where interference dramatically amplifies the effect of weak Fizeau splitting. This mechanism generates pronounced directional asymmetry in photon statistics, featuring bright antibunched emission in one direction and strongly bunched emission in the opposite direction. Remarkably, both correlation and brightness isolations obey phase-controlled power-law scaling with Fizeau splitting, reaching up to 65~dB and 17.3~dB, respectively. Our results establish interference-enhanced weak chirality as a powerful route toward directional nonclassical light sources.
Versions
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BibTeX
@misc{tang2026quantum,
title = {{Quantum Interference Amplifies Weak Chirality into Giant Quantum Nonreciprocity}},
author = {Jing Tang and Yuangang Deng},
howpublished = {arXiv},
year = {2026},
month = may,
doi = {10.48550/arxiv.2605.27447},
eprint = {2605.27447},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2605.27447},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Quantum Interference Amplifies Weak Chirality into Giant Quantum Nonreciprocity
AU - Jing Tang
AU - Yuangang Deng
PY - 2026
DA - 2026/05/24
PB - arXiv
DO - 10.48550/arxiv.2605.27447
UR - https://arxiv.org/abs/2605.27447
AB - Quantum nonreciprocity at few-photon level typically requires strong symmetry breaking, posing significant experimental challenges. Here we demonstrate that phase-controlled quantum interference can amplify weak chirality into giant quantum nonreciprocity. We consider two phase-programmable atoms coupled to a spinning whispering-gallery-mode resonator, where interference dramatically amplifies the effect of weak Fizeau splitting. This mechanism generates pronounced directional asymmetry in photon statistics, featuring bright antibunched emission in one direction and strongly bunched emission in the opposite direction. Remarkably, both correlation and brightness isolations obey phase-controlled power-law scaling with Fizeau splitting, reaching up to 65~dB and 17.3~dB, respectively. Our results establish interference-enhanced weak chirality as a powerful route toward directional nonclassical light sources.
ER -