Inhibiting decoherence of two-level atom in thermal bath by presence of boundaries
arXiv:1609.09622 · doi:10.1007/s11128-016-1343-7
Abstract
We study, in the paradigm of open quantum systems, the dynamics of quantum coherence of a static polarizable two-level atom which is coupled with a thermal bath of fluctuating electromagnetic field in the absence and presence of boundaries. The purpose is to find the conditions under which the decoherence can be inhibited effectively. We find that without boundaries, quantum coherence of the two-level atom inevitably decreases due to the effect of thermal bath. However, the quantum decoherence, in the presence of a boundary, could be effectively inhibited when the atom is transversely polarizable and near this boundary. In particular, we find that in the case of two parallel reflecting boundaries, the atom with a parallel dipole polarization at arbitrary location between these two boundaries will be never subjected to decoherence provided we take some special distances for the two boundaries.
9 pages, 8 figures
References in corpus (14)
- Reference frames, superselection rules, and quantum information
- Description of quantum coherence in thermodynamic processes requires constraints beyond free energy
- Observable measure of quantum coherence in finite dimensional systems
- Quantum coherence, time-translation symmetry and thermodynamics
- Using entanglement against noise in quantum metrology
- Frozen Quantum Coherence
- Harnessing non-Markovian quantum memory by environmental coupling
- Universal freezing of quantum correlations within the geometric approach
- Dissipative dynamics of a solid-state qubit coupled to surface plasmons: from non-Markov to Markov regimes
- Relativistic Quantum Metrology in Open System Dynamics
- Dynamics and quantum entanglement of two-level atoms in de Sitter spacetime
- Brownian motion of a charged test particle near a reflecting boundary at finite temperature
- Entropic uncertainty relation in de Sitter space
- Control of non-Markovian effects in the dynamics of polaritons in semiconductor microcavities