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arXiv 1503.05421quant-ph
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稳定剂状态的测定

Determination of stabilizer states

Xia Wu, Ying-hui Yang, Yu-kun Wang, Qiao-yan Wen, Su-juan Qin, Fei Gao

摘要:

许多特殊类型的量子态的确定已被深入研究,如广义量子态|GHZ> states,|随机局域操作下W>态等价,经典通信和Dicke态等价.在本文中,我们将研究另一种特殊的纠缠态--稳定子态。稳定子态及其子集图态在量子纠错码、多体净化等领域中起着重要的作用.本文证明了对于相应稳定子形式主义的n个独立生成元支撑的系统,所有n比特稳定子态(在任意纯态或混合态中)都是由它们的约化密度矩阵唯一确定的.

英文摘要:

The determination of many special types of quantum states has been studied thoroughly, such as the generalized |GHZ> states, |W> states equivalent under stochastic local operations and classical communication and Dicke states. In this paper, we are going to study another special entanglement states which is stabilizer states. The stabilizer states and their subset graph states play an important role in quantum error correcting codes, multipartite purification and so on. We show that all n- qubit stabilizer states are uniquely determined (among arbitrary states, pure or mixed) by their reduced density matrices for systems which are the supports of n independent generators of the corresponding stabilizer formalisms.

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