Entangling three qubits without ever touching

被引:20
作者
Blasiak, Pawel [1 ,2 ]
Markiewicz, Marcin [3 ]
机构
[1] Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland
[2] City Univ London, London EC1V 0HB, England
[3] Jagiellonian Univ, Inst Phys, PL-30348 Krakow, Poland
关键词
D O I
10.1038/s41598-019-55137-3
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
All identical particles are inherently correlated from the outset, regardless of how far apart their creation took place. In this paper, this fact is used for extraction of entanglement from independent particles unaffected by any interactions. Specifically, we are concerned with operational schemes for generation of all tripartite entangled states, essentially the GHZ state and the W state, which prevent the particles from touching one another over the entire evolution. The protocols discussed in the paper require only three particles in linear optical setups with equal efficiency for boson, fermion or anyon statistics. Within this framework indistinguishability of particles presents itself as a useful resource of entanglement accessible for practical applications.
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页数:8
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