Simple entanglement purification protocol by spin chain dynamics without CNOTs

K. Maruyama

doi:10.1134/S0030400X10020207

Simple entanglement purification protocol by spin chain dynamics without CNOTs

K. Maruyama^*

^*Corresponding author for this work

Intellectual Information Engineering

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Abstract

We present a simple protocol to purify bipartite entanglement in spin-1/2 particles by utilising only natural spin-spin interactions, i.e., those that can commonly be realised in realistic physical systems, and Sz-measurements on single spins. Even the standard isotropic Heisenberg interaction is shown to be sufficient to purify mixed state entanglement if there are at least three pairs of spins. This approach could be useful for quantum information processing in solid-state-based systems.

Original language	English
Pages (from-to)	301-304
Number of pages	4
Journal	Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
Volume	108
Issue number	2
DOIs	https://doi.org/10.1134/S0030400X10020207
State	Published - 2010/02

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

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10.1134/S0030400X10020207

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abstract = "We present a simple protocol to purify bipartite entanglement in spin-1/2 particles by utilising only natural spin-spin interactions, i.e., those that can commonly be realised in realistic physical systems, and Sz-measurements on single spins. Even the standard isotropic Heisenberg interaction is shown to be sufficient to purify mixed state entanglement if there are at least three pairs of spins. This approach could be useful for quantum information processing in solid-state-based systems.",

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AB - We present a simple protocol to purify bipartite entanglement in spin-1/2 particles by utilising only natural spin-spin interactions, i.e., those that can commonly be realised in realistic physical systems, and Sz-measurements on single spins. Even the standard isotropic Heisenberg interaction is shown to be sufficient to purify mixed state entanglement if there are at least three pairs of spins. This approach could be useful for quantum information processing in solid-state-based systems.

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Simple entanglement purification protocol by spin chain dynamics without CNOTs

Abstract

ASJC Scopus subject areas

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