Experimental detection of entanglement polytopes via local filters
Experimental detection of entanglement polytopes via local filters
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通过局部滤波器实验检测纠缠多胞体
DOI:
10.1038/s41534-017-0007-5
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发表时间:
2015-02
影响因子:
7.6
通讯作者:
Guo Guang-Can
中科院分区:
文献类型:
--
作者:
Zhao Yuan-Yuan;Grassl Markus;Zeng Bei;Xiang Guo-Yong;Zhang Chao;Li Chuan-Feng;Guo Guang-Can
Quantum entanglement, resulting in correlations between subsystems that are stronger than any possible classical correlation, is one of the mysteries of quantum mechanics. Entanglement cannot be increased by any local operation, and for a sufficiently large many-body quantum system there exist infinitely many different entanglement classes, i.e., states that are not related by stochastic local operations and classical communications. On the other hand, the method of entanglement polytopes results in finitely many coarse-grained types of entanglement that can be detected by only measuring single-particle spectra. We find, however, that with high probability the local spectra lie in more than one polytope, hence providing only partial information about the entanglement type. To overcome this problem, we propose to additionally use so-called local filters, which are non-unitary local operations. We experimentally demonstrate the detection of entanglement polytopes in a four-qubit system. Using local filters we can distinguish the entanglement type of states with the same single particle spectra, but which belong to different polytopes.
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影响因子:
2.9
作者:
F. Verstraete;J. Dehaene;B. Moor
通讯作者:
F. Verstraete;J. Dehaene;B. Moor
影响因子:
2.4
作者:
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影响因子:
1.8
作者:
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通讯作者:
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影响因子:
8.6
作者:
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通讯作者:
Zhi-Wei Wang;Xiang-Fa Zhou;Yun-Feng Huang;Yong-Sheng Zhang;Xifeng Ren;G. Guo
DOI:
--
发表时间:
2006-12
期刊:
arXiv: Quantum Physics
影响因子:
--
作者:
Oleg Chterental;D. Djoković
通讯作者:
Oleg Chterental;D. Djoković