Experimental activation of bound entanglement

Fumihiro Kaneda, Ryosuke Shimizu, Satoshi Ishizaka, Yasuyoshi Mitsumori, Hideo Kosaka, Keiichi Edamatsu

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Entanglement is one of the essential resources in quantum information and communication technology (QICT). The entanglement thus far explored and applied to QICT has been pure and distillable entanglement. Yet, there is another type of entanglement, called "bound entanglement," which is not distillable by local operations and classical communication. We demonstrate the experimental "activation" of the bound entanglement held in the four-qubit Smolin state, unleashing its immanent entanglement in distillable form, with the help of auxiliary two-qubit entanglement and local operations and classical communication. We anticipate that it opens the way to a new class of QICT applications that utilize more general classes of entanglement than ever, including bound entanglement.

Original languageEnglish
Article number040501
JournalPhysical review letters
Volume109
Issue number4
DOIs
Publication statusPublished - 2012 Jul 26

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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