A symmetry analyser for non-destructive Bell state detection using EIT
量子物理
2009-11-10 v3
摘要
We describe a method to project photonic two-qubit states onto the symmetric and antisymmetric subspaces of their Hilbert space. This device utilizes an ancillary coherent state, together with a weak cross-Kerr non-linearity, generated, for example, by electromagnetically induced transparency. The symmetry analyzer is non-destructive, and works for small values of the cross-Kerr coupling. Furthermore, this device can be used to construct a non-destructive Bell state detector.
引用
@article{arxiv.quant-ph/0408117,
title = {A symmetry analyser for non-destructive Bell state detection using EIT},
author = {S. D. Barrett and P. Kok and K. Nemoto and R. G. Beausoleil and W. J. Munro and T. P. Spiller},
journal= {arXiv preprint arXiv:quant-ph/0408117},
year = {2009}
}
备注
Final published form