Quantum speedup in a memory environment
Abstract
Memory (non-Markovian) effect is found to be able to accelerate quantum evolution [S. Deffner and E. Lutz, Phys. Rev. Lett. 111, 010402 (2013)]. In this work, for an atom in a structured reservoir, we show that the mechanism for the speedup is not only related to non-Markovianity but also to the population of excited states under a given driving time. In other words, it is the competition between non-Markovianity and population of excited states that ultimately determines the acceleration of quantum evolution in memory environment. A potential experimental realization for verifying the above phenomena is discussed by using a nitrogen-vacancy (N-V) center embedded in a planar photonic crystal cavity (PCC) under the current experimental conditions.
Keywords
Cite
@article{arxiv.1311.1593,
title = {Quantum speedup in a memory environment},
author = {Zhen-Yu Xu and Shunlong Luo and W. L. Yang and Chen Liu and Shiqun Zhu},
journal= {arXiv preprint arXiv:1311.1593},
year = {2015}
}
Comments
6 pages, 4 figures, published version