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Dispersive readout of a weakly coupled qubit via the parity-time-symmetric phase transition
Guo-Qiang Zhang, Yi-Pu Wang, J. Q. You
For some cavity-quantum-electrodynamics systems, such as a single electron spin coupled to a passive cavity, it is challenging to reach the strong-coupling regime. In such a weak-c…
Geometric decoherence in diffusive open quantum systems
Da-Wei Luo, Hai-Qing Lin, J. Q. You +3
Based on a generic quantum open system model, we study the geometric nature of decoherence by defining a complex-valued geometric phase through stochastic pure states describing no…
Accessing the bath information in open quantum systems with the stochastic c-number Langevin equation method
Zheng-Yang Zhou, Yun-An Yan, Stephen Hughes +2
In traditional open quantum systems, the baths are usually traced out so that only the system information is left in the equations of motion. However, recent studies reveal that us…
Quantum Simulation of the Fermion-Boson Composite Quasi-Particles with a Driven Qubit-Magnon Hybrid Quantum System
Yi-Pu Wang, Guo-Qiang Zhang, Da Xu +4
We experimentally demonstrate strong coupling between the ferromagnetic magnons in a small yttrium-iron-garnet (YIG) sphere and the drive-field-induced dressed states of a supercon…
Time-domain grating with a periodically driven qutrit
Yingying Han, Xiao-Qing Luo, Tie-Fu Li +5
Physical systems in the time domain may exhibit analogous phenomena in real space, such as time crystals, time-domain Fresnel lenses, and modulational interference in a qubit. Here…