Limitations of practical multi-photon decoherence-free states
Quantum Physics
2009-11-11 v1
Abstract
It is shown in this paper that decoherence-free subspace (DFS) of practical multi-photon polarization can not avoid the exponential decoherence even in the same extra-environment if the photons are frequency-anticorrelated. The reason lies in that the condition of collective decoherence is not satisfied in this case. As an example, the evolution of biphoton's decoherence-free state is given. Possible solution for feasible multi-photon's DFS state is also given.
Keywords
Cite
@article{arxiv.quant-ph/0503120,
title = {Limitations of practical multi-photon decoherence-free states},
author = {Yong-Sheng Zhang and Chuan-Feng Li and Yun-Feng Huang and Guang-Can Guo},
journal= {arXiv preprint arXiv:quant-ph/0503120},
year = {2009}
}
Comments
6 pages, no figure