Smallest state spaces for which bipartite entangled quantum states are separable
Smallest state spaces for which bipartite entangled quantum states are separable
复制标题
二分纠缠量子态可分离的最小状态空间
DOI:
10.1088/1367-2630/17/9/093047
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发表时间:
2015
影响因子:
3.3
通讯作者:
Anwar H
中科院分区:
文献类型:
--
作者:
Anwar H
According to usual definitions, entangled states cannot be given a separable decomposition in terms of products of local density operators. If we relax the requirement that the local operators be positive, then an entangled quantum state may admit a separable decomposition in terms of more general sets of single-system operators. This form of separability can be used to construct classical models and simulation methods when only a restricted set of measurements is available. With these motivations in mind, we ask what are the smallest sets of local operators such that a pure bipartite entangled quantum state becomes separable? We find that in the case of maximally entangled states there are many inequivalent solutions, including for example the sets of phase point operators that arise in the study of discrete Wigner functions. We therefore provide a new way of interpreting these operators, and more generally, provide an alternative method for constructing local hidden variable models for entangled quantum states under subsets of quantum measurements.
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影响因子:
8.6
作者:
Joseph Bowles;Flavien Hirsch;M. T. Quintino;N. Brunner
通讯作者:
Joseph Bowles;Flavien Hirsch;M. T. Quintino;N. Brunner
DOI:
10.1088/1751-8113/47/42/424030
发表时间:
2014
期刊:
Journal of Physics A: Mathematical and Theoretical
影响因子:
--
作者:
J. Geller;M. Piani
通讯作者:
M. Piani
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
N. Johnston;D. Kribs
通讯作者:
D. Kribs
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
N. Ratanje;S. Virmani
通讯作者:
S. Virmani
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
N. Ratanje;S. Virmani
通讯作者:
S. Virmani