4 papers
Quantum nonreciprocity from qubits coupled by Dzyaloshinskii-Moriya interaction
Zhenghao Zhang, Qingtian Miao, G. S. Agarwal
We present a theoretical study of quantum nonreciprocity induced via a Dzyaloshinskii-Moriya interaction (DMI) in an otherwise achiral, waveguide quantum electrodynamics. Using the…
Time crystals and nonequilibrium dissipative phase transitions mediated by squeezed bath
Zhenghao Zhang, Qingtian Miao, G. S. Agarwal
Nonequilibrium dissipative phase transition, arising from the competition of cooperative behavior and coherent field driving, discovered in the 1970s by Narducci et al. and Walls e…
Transparency, Nonclassicality and Nonreciprocity in Chiral Waveguide Quantum Electrodynamics
Qingtian Miao, G. S. Agarwal
We examine quantum statistical properties of transmission and reflection from a chiral waveguide coupled to qubits for arbitrary input powers. We report on several remarkable featu…
Kerr Nonlinearity Induced Nonreciprocity in dissipatively coupled resonators
Qingtian Miao, G. S. Agarwal
Nonlinearity induced nonreciprocity is studied in a system comprising two resonators coupled to a one-dimensional waveguide when the linear system does not exhibit nonreciprocity.…