Swapping path-spin intraparticle entanglement onto spin-spin interparticle entanglement

被引：26

作者：

Adhikari, S. ^{[1
]}

Majumdar, A. S. ^{[1
]}

Home, Dipankar ^{[2
]}

Pan, A. K. ^{[2
]}

机构：

[1] SN Bose Natl Ctr Basic Sci Salt Lake, Kolkata 700098, India

[2] Bose Inst Salt Lake, Dept Phys, CAPSS, Kolkata 700091, India

来源：

EPL | 2010年 / 89卷 / 01期

关键词：

QUANTUM; INEQUALITY; STATES; INTERFEROMETRY; PARTICLE;

D O I：

10.1209/0295-5075/89/10005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Based on a scheme that produces an entanglement between the spin and the path variables of a single spin-(1/2) particle (qubit) using a beam-splitter and a spin-flipper, we formulate a procedure for transferring this intraparticle hybrid entanglement to an interparticle entanglement between the spin variables of two other spatially separated spin-(1/2) particles which never interact with each other during the entire process. This procedure of entanglement swapping is accomplished by a Mach-Zehnder setup in conjunction with the Stem-Gerlach measuring device and by using suitable unitary operations. The proposed protocol, thus, enables the use of intraparticle entanglement as a resource-a feature that has remained unexplored. Copyright (C) EPLA, 2010

引用

页数：5

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