Zobrazeno 1 - 10
of 222
pro vyhledávání: '"Lü, Zhiguo"'
We present a time-dependent variational approach with the multiple Davydov $D_2$ trial state to simulate the dynamics of light-matter systems when the field is in a coherent state with an arbitrary finite mean photon number. The variational approach
Externí odkaz:
http://arxiv.org/abs/2407.12228
Autor:
Yu, Qinjing, Lü, Zhiguo
Publikováno v:
Phys. Rev. A 2023
We present the interesting resonance of two kinds of geometric quantities, namely the Aharonov-Anandan (AA) phase and the time-energy uncertainty, and reveal the relation between resonance and the hidden symmetry in the asymmetric Rabi model by numer
Externí odkaz:
http://arxiv.org/abs/2311.10249
We study the resonance and dynamics of a qubit exposed to a strong aperiodic bichromatic field by using a periodic counter-rotating hybridized rotating wave (CHRW) Hamiltonian, which is derived from the original Hamiltonian with the unitary transform
Externí odkaz:
http://arxiv.org/abs/2304.02676
We study the emission spectra of dissipative Rabi and Jaynes-Cummings models in the non-Markovian and ultrastrong coupling regimes. We have derived a polaron-transformed Nakajima-Zwanzig master equation (PTNZE) to calculate the emission spectra, whic
Externí odkaz:
http://arxiv.org/abs/2304.02675
We study the vacuum Rabi splitting of a qubit ultrastrongly coupled to a high-$Q$ cavity mode and a radiation reservoir. Three methods are employed: a numerically exact variational approach with a multiple Davydov ansatz, the rotating-wave approximat
Externí odkaz:
http://arxiv.org/abs/2304.02674
Dynamics of the (sub-)Ohmic spin-boson model under various bath initial conditions is investigated by employing the Dirac-Frenkel time-dependent variational approach with the multiple Davydov $\mathrm{D_1}$ ansatz in the interaction picture. The vali
Externí odkaz:
http://arxiv.org/abs/2212.05723
Autor:
Lü, Zhiguo, Zheng, Hang
Publikováno v:
The Journal of Chemical Physics 136, 121103 (2012)
We investigate the steering dissipative dynamics of a two-level system (qubit) by means of the modulation of an assisted tunneling degree of freedom which is described by a quantum-oscillator spin-boson model. Our results reveal that the decoherence
Externí odkaz:
http://arxiv.org/abs/2204.02561
We investigate the effects of counterrotating terms on geometric phase and its relation to the resonance of the Rabi model. We apply the unitary transformation with a single parameter to the Rabi model and obtain the transformed Hamiltonian involving
Externí odkaz:
http://arxiv.org/abs/2110.01158
We present an interesting dynamical temporal localization of a strongly driven two-level system (TLS), a plateau with quantized oscillation, by an analytical and transparent method, the counter-rotating-hybridized rotating-wave (CHRW) method. This ap
Externí odkaz:
http://arxiv.org/abs/2010.11785
Publikováno v:
Phys. Rev. A 100, 013823 (2019)
We study the origin of the symmetry of the fluorescence spectrum from the two-level system subjected to a low-frequency periodic modulation and a near-resonant high-frequency monochromatic excitation by using the analytical and numerical methods base
Externí odkaz:
http://arxiv.org/abs/2003.05124