Coherent manipulation of spin wave vector for polarization of photons in an atomic ensemble
Atomic Physics
2015-05-28 v1
Abstract
We experimentally demonstrate the manipulation of two-orthogonal components of a spin wave in an atomic ensemble. Based on Raman two-photon transition and Larmor spin precession induced by magnetic field pulses, the coherent rotations between the two components of the spin wave is controllably achieved. Successively, the two manipulated spin-wave components are mapped into two orthogonal polarized optical emissions, respectively. By measuring Ramsey fringes of the retrieved optical signals, the \pi/2-pulse fidelity of ~96% is obtained. The presented manipulation scheme can be used to build an arbitrary rotation for qubit operations in quantum information processing based on atomic ensembles.
Keywords
Cite
@article{arxiv.1107.1914,
title = {Coherent manipulation of spin wave vector for polarization of photons in an atomic ensemble},
author = {Shujing Li and Zhongxiao Xu and Haiyan Zheng and Xingbo Zhao and Yuelong Wu and Hai Wang and Changde Xie and Kunchi Peng},
journal= {arXiv preprint arXiv:1107.1914},
year = {2015}
}