Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

The European Physical Journal D

Nonlinear optical nonreciprocity in a surface plasmon–exciton coupled asymmetric cavity system

Shengfa Fan, Fengxue Zhou, Fei Xu, Yihong Qi, Yueping Niu, Shangqing Gong

Published Nov 1, 2022• 3 citations
Publisher
DOI
10.1140/epjd/s10053-022-00541-0

Related papers

Optical nonlinearity in coupled exciton-phonon systems near metal surfaces

Xiao-Lin Li, D. L. Lin, Thomas F. George

Synthetic Metals•Aug 1, 1992•0 citations

Surface effect on optical bistability in coupled exciton-phonon systems inside a cavity

D. L. Lin, X. Li, Z. D. Liu +1 more

Physics Letters A•Oct 1, 1991•2 citations

Quantum Nonlinear Nonreciprocity in a Cavity-Coupled Quantum Dot–Metal Nanoparticle Hybrid System

Zeyou Li, Han YANG, Fei Xu +2 more

Optical nonreciprocity (ONR) plays an important role in laser technique, optical communications, quantum information, etc. Realizing ONR at the quantum level of few photons or single photons is also essential for quantum communications or quantum networks. In this work, we propose a hybrid configuration composed of a quantum dot–metallic nanoparticle (QD-MNP) composite in a ring cavity to achieve ONR at the few-photon level via optical bistability. With the surface plasmon effect of the MNP, the bistable property and regime of photons producing ONR in an asymmetric ring cavity including a QD and an MNP inside can be significantly improved in comparison with the case of a single QD. By using the bistability effect, giant ONR can be achieved in an optimal window of numbers of input photons. The detuning and the coupling strength coefficients of the hybrid system can be adjusted and utilized to optimize the performance of the quantum nonreciprocity. This work may find promising applications in quantum nonreciprocal devices and photonic quantum circuits.

Photonics•Jun 9, 2026•0 citations

Realization of Nonlinear Optical Nonreciprocity on a Few-Photon Level Based on Atoms Strongly Coupled to an Asymmetric Cavity

Pengfei Yang, Xiuwen Xia, Hai Yan He +8 more

Optical nonreciprocity is important in photonic information processing to route the optical signal or prevent the reverse flow of noise. By adopting the strong nonlinearity associated with a few atoms in a strongly coupled cavity QED system and an asymmetric cavity configuration, we experimentally demonstrate the nonreciprocal transmission between two counterpropagating light fields with extremely low power. The transmission of 18% is achieved for the forward light field, and the maximum blocking ratio for the reverse light is 30 dB. Though the transmission of the forward light can be maximized by optimizing the impedance matching of the cavity, it is ultimately limited by the inherent loss of the scheme. This nonreciprocity can even occur on a few-photon level due to the high optical nonlinearity of the system. The working power can be flexibly tuned by changing the effective number of atoms strongly coupled to the cavity. The idea and result can be applied to optical chips as optical diodes by using fiber-based cavity QED systems. Our work opens up new perspectives for realizing optical nonreciprocity on a few-photon level based on the nonlinearities of atoms strongly coupled to an optical cavity.

arXiv:1906.00123•Physical Review Letters•Dec 4, 2019•134 citations

Nonlinear optical responses of exciton—microcavity coupled system in weak and intermediate coupling regime

Ryo Shimano, S. Inouye, Ichiro Ogura +3 more

Journal of Luminescence•Jun 1, 1997•1 citation

Optical nonreciprocity via the standard Jaynes–Cummings model in a gain microcavity

Yunfei Ma, Tieping Li, Anshou Zheng

Optical nonreciprocal devices are essential to quantum information processing and communication. We proposed a scheme for optical nonreciprocity via the nonlinear Jaynes–Cummings model in a gain cavity. In addition, the gain cavity is coupled to two fibers with different coupling strengths. In the scheme, the nonlinearity, which is induced by the interaction between a two-level quantum emitter and the cavity field, is enhanced by the cavity gain. Our calculations show that the nonlossy optical nonreciprocity is achievable with high isolation ratio in proper parameter range. Especially, the analytic method further shows the reciprocity broken by the combination of the asymmetric coupling and enhanced nonlinearity.

Journal of the Optical Society of America B•Jan 24, 2018•6 citations
Optical nonreciprocity (ONR) plays an important role in laser technique, optical communications, quantum information, etc. Realizing ONR at the quantum level of few photons or single photons is also essential for quantum communications or quantum networks. In this work, we propose a hybrid configuration composed of a quantum dot–metallic nanoparticle (QD-MNP) composite in a ring cavity to achieve ONR at the few-photon level via optical bistability. With the surface plasmon effect of the MNP, the bistable property and regime of photons producing ONR in an asymmetric ring cavity including a QD and an MNP inside can be significantly improved in comparison with the case of a single QD. By using the bistability effect, giant ONR can be achieved in an optimal window of numbers of input photons. The detuning and the coupling strength coefficients of the hybrid system can be adjusted and utilized to optimize the performance of the quantum nonreciprocity. This work may find promising applications in quantum nonreciprocal devices and photonic quantum circuits.
Optical nonreciprocity is important in photonic information processing to route the optical signal or prevent the reverse flow of noise. By adopting the strong nonlinearity associated with a few atoms in a strongly coupled cavity QED system and an asymmetric cavity configuration, we experimentally demonstrate the nonreciprocal transmission between two counterpropagating light fields with extremely low power. The transmission of 18% is achieved for the forward light field, and the maximum blocking ratio for the reverse light is 30 dB. Though the transmission of the forward light can be maximized by optimizing the impedance matching of the cavity, it is ultimately limited by the inherent loss of the scheme. This nonreciprocity can even occur on a few-photon level due to the high optical nonlinearity of the system. The working power can be flexibly tuned by changing the effective number of atoms strongly coupled to the cavity. The idea and result can be applied to optical chips as optical diodes by using fiber-based cavity QED systems. Our work opens up new perspectives for realizing optical nonreciprocity on a few-photon level based on the nonlinearities of atoms strongly coupled to an optical cavity.
Optical nonreciprocal devices are essential to quantum information processing and communication. We proposed a scheme for optical nonreciprocity via the nonlinear Jaynes–Cummings model in a gain cavity. In addition, the gain cavity is coupled to two fibers with different coupling strengths. In the scheme, the nonlinearity, which is induced by the interaction between a two-level quantum emitter and the cavity field, is enhanced by the cavity gain. Our calculations show that the nonlossy optical nonreciprocity is achievable with high isolation ratio in proper parameter range. Especially, the analytic method further shows the reciprocity broken by the combination of the asymmetric coupling and enhanced nonlinearity.