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Autor:
Lo, Lezhi, Law, C. K.
Publikováno v:
Phys. Rev. A 98, 063807 (2018)
We present a non-relativistic theory of quantum radiation generated by shaking a two-level atom in vacuum. Such radiation has the same origin of photon emission in dynamical Casimir effect. By performing a time-dependent "dressing" transformation to
Externí odkaz:
http://arxiv.org/abs/1811.03776
Autor:
Fong, P. T., Law, C. K.
Publikováno v:
Phys. Rev. A 96, 023842 (2017)
We present an analytic solution of bound states in the continuum (BICs) for photons and atoms in a one-dimensional coupled cavity array. These bound states are formed by two ensembles of twolevel atoms confined in separated cavities of the array. We
Externí odkaz:
http://arxiv.org/abs/1705.04021
Publikováno v:
Phys. Rev. A 92, 013822 (2015)
We propose an approach to enhance the mechanical effects of single photons in a two-mode optomechanical system. This is achieved by introducing a resonance-frequency modulation to the cavity fields. When the modulation frequency and amplitude satisfy
Externí odkaz:
http://arxiv.org/abs/1507.03660
Autor:
Huang, Jin-Feng, Law, C. K.
Publikováno v:
Phys. Rev. A 91, 023806 (2015)
We present an interaction scheme to control counter-rotating terms in the quantum Rabi model. We show that by applying a sequence of $\pi/2$ phase kicks to a two-level atom and a single mode quantized field, the natural dynamics of the Rabi model can
Externí odkaz:
http://arxiv.org/abs/1407.4594
Autor:
Huang, Jin-Feng, Law, C. K.
Publikováno v:
Phys. Rev. A 89, 033827 (2014)
We investigate theoretically quantum effects of a cavity-atom system in which the upper two levels of a cascade-type three-level atom interact with a cavity field mode in the ultrastrong coupling regime. By exploiting the virtual photons carried by a
Externí odkaz:
http://arxiv.org/abs/1312.7612
Autor:
Lee, Kelvin M. C., Law, C. K.
We consider a generalized Rabi model formed by two identical qubits interacting with a common oscillator mode. In the near resonance configuration where the oscillator frequency is close to the transition frequency of the qubit, we determine the grou
Externí odkaz:
http://arxiv.org/abs/1303.3367
Autor:
Law, C. K.
We present an interaction scheme that exhibits a dynamical consequence of virtual photons carried by a vacuum-field dressed two-level atom in the ultrastrong coupling regime. We show that, with the aid of an external driving field, virtual photons pr
Externí odkaz:
http://arxiv.org/abs/1212.5864
Autor:
Xu, Gao-Feng, Law, C. K.
We investigate an optomechanical system in which a cavity with a moving mirror is driven by two external fields. When the field frequencies match resonance conditions, we show that there exists a class of dark states of the moving mirror in the singl
Externí odkaz:
http://arxiv.org/abs/1211.5445
Autor:
Cheung, H. K., Law, C. K.
Publikováno v:
Phys. Rev. A 86, 033807 (2012)
We present a Lagrangian-Hamiltonian formalism of a moving dielectric sphere interacting with radiation fields. By including the interaction up to the first order in the speed of the sphere, we derive the Hamiltonian and perform quantization of both t
Externí odkaz:
http://arxiv.org/abs/1208.0681