9 papers
Enhanced two-photon blockade without cascade channel by Stark nonlinear coupling
Zu-Jian Ying, Hang-Hang Han
Two-photon blockade (TPB) besides the conventional one-photon blockade can control the photon at the level of individual quanta in the input-output measurements of light-matter cou…
Two-photon blockade without cascade channel in strong light-matter coupling
Hang-Hang Han, Zu-Jian Ying
We report a distinct two-photon blockade (termed as weak TPB) discovered in the strong-coupling regime of a parity-broken generalized quantum Rabi model, in addition to the other t…
Asymmetric polaron picture for the quantum Rabi model
Feng Qiao, Qiu-Yi Chen, Zu-Jian Ying
The experimental access to ultra-strong couplings in light-matter interactions has made the quantum phase transition (QPT) in the quantum Rabi model practically relevant, while the…
Globalized critical quantum metrology in dynamics of quantum Rabi model by auxiliary nonlinear term
Qiu-Yi Chen, Feng Qiao, Zu-Jian Ying
Quantum Rabi model (QRM) is a fundamental model for light-matter interactions, the finite-component quantum phase transition (QPT) in the QRM has established a paradigmatic applica…
Phonon-induced two-axis spin squeezing with decoherence reduction in hybrid spin-optomechanical system
Feng Qiao, Zu-Jian Ying
We propose a scheme to implement Heisenberg-limited spin squeezing in a hybrid cavity optomechanical-spin system. In our system, two-level systems are coupled via Tavis-Cumming…
Globalized Nonlinear Critical Quantum Metrology by Two-photon Rabi-Stark model
Zu-Jian Ying
Squeezing as a quantum resource for quantum metrology is robust against decoherence and dissipation, while the conventional nonlinear two-photon quantum Rabi model (QRM) provides a…