A reservoir for inverse power law decoherence of a qubit
arXiv:1011.0059 · doi:10.1103/PhysRevA.83.012107
Abstract
The exact dynamics of a Jaynes-Cummings model for a qubit interacting with a continuous distribution of bosons, characterized by a special form of the spectral density, is evaluated analytically. The special reservoir is designed to induce anomalous decoherence, resulting in an inverse power law relaxation, of power 3/2, over an evaluated long time scale. If compared to the exponential-like relaxation obtained from the original Jaynes-Cummings model for Lorentzian-type spectral density functions, decoherence is strongly suppressed. The special reservoir exhibits an upper band edge frequency coinciding with the qubit transition frequency. Known theoretical models of photonic band gap media suitable for the realization of the designed reservoir are proposed.
arXiv comment5 pages, 2 figures
References in corpus (1)
Cited by in corpus (6)
- Markovian and Non-Markovian Dynamics of Quantum Emitters coupled to Two-dimensional Structured Reservoirs
- Purely Long-Range Coherent Interactions in Two-Dimensional Structured Baths
- Non-perturbative effects in corrections to quantum master equation arising in Bogolubov-van Hove limit
- Unconventional Quantum Electrodynamics with Hofstadter-Ladder Waveguide
- Lattice mapping for many-body open quantum systems and its application to atoms in photonic cystals
- Designing reservoirs for 1/t decoherence of a qubit