Zobrazeno 1 - 10
of 206
pro vyhledávání: '"Strunz, W."'
Publikováno v:
Phys. Rev. A 93, 052316 (2016)
Based on the exact dynamics of a two-qubit system and environment, we investigate system-environment (SE) quantum and classical correlations. The coupling is chosen to represent a dephasing channel for one of the qubits and the environment is a prope
Externí odkaz:
http://arxiv.org/abs/1605.04154
Publikováno v:
Phys. Rev. E 91, 052908 (2015)
The quantum ratchet current is studied in the parameter space of the dissipative kicked rotor model coupled to a zero temperature quantum environment. We show that vacuum fluctuations blur the generic isoperiodic stable structures found in the classi
Externí odkaz:
http://arxiv.org/abs/1505.03577
We derive a hierarchy of stochastic evolution equations for pure states (quantum trajectories) to efficiently solve open quantum system dynamics with non-Markovian structured environments. From this hierarchy of pure states (HOPS) the exact reduced d
Externí odkaz:
http://arxiv.org/abs/1402.4647
The quantum average energy decay and the purity decay are studied for a system particle as a function of the number of constituents of a discrete bath model. The system particle is subjected to two distinct physical situations: the harmonic oscillato
Externí odkaz:
http://arxiv.org/abs/1111.0243
Autor:
Pernice, A., Strunz, W. T.
We investigate system-environment correlations based on the exact dynamics of a qubit and its environment in the framework of pure decoherence (phase damping). We focus on the relation of decoherence and the build-up of system-reservoir entanglement
Externí odkaz:
http://arxiv.org/abs/1109.0147
Publikováno v:
J. Phys. Chem. Lett. 2, 2912 (2011)
Energy transfer in the photosynthetic complex of the Green Sulfur Bacteria known as the Fenna-Matthews-Olson (FMO) complex is studied theoretically taking all three subunits (monomers) of the FMO trimer and the recently found eighth bacteriochlorophy
Externí odkaz:
http://arxiv.org/abs/1108.3452
Publikováno v:
New J. Phys. 13 113034 (2011)
A master equation, derived from the non-Markovian quantum state diffusion (NMQSD), is used to calculate excitation energy transfer in the photosynthetic Fenna-Matthews-Olson (FMO) pigment-protein complex at various temperatures. This approach allows
Externí odkaz:
http://arxiv.org/abs/1106.5259
Publikováno v:
Phys. Rev. A 88, 052122 (2013)
A long-standing open problem in non-Markovian quantum state diffusion (QSD) approach to open quantum systems is to establish the non-Markovian QSD equations for multiple qubit systems. In this paper, we settle this important question by explicitly co
Externí odkaz:
http://arxiv.org/abs/1012.0364
Autor:
Heller, S., Strunz, W. T.
Stochastic field equations represent a powerful tool to describe the thermal state of a trapped Bose gas. Often, such approaches are confronted with the old problem of an ultraviolet catastrophe, which demands a cutoff at high energies. In [arXiv:080
Externí odkaz:
http://arxiv.org/abs/1009.3170
Publikováno v:
Phys. Rev. A 70, 042105 (2004)
Entanglement between a quantum system and its environment leads to loss of coherence in the former. In general, the temporal fate of coherences is complicated. Here, we establish the connection between decoherence of a central system and fidelity dec
Externí odkaz:
http://arxiv.org/abs/quant-ph/0405011