TY - JOUR
T1 - Experimental activation of bound entanglement
AU - Kaneda, Fumihiro
AU - Shimizu, Ryosuke
AU - Ishizaka, Satoshi
AU - Mitsumori, Yasuyoshi
AU - Kosaka, Hideo
AU - Edamatsu, Keiichi
PY - 2012/7/26
Y1 - 2012/7/26
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.109.040501
DO - 10.1103/PhysRevLett.109.040501
M3 - Article
AN - SCOPUS:84864226379
VL - 109
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 4
M1 - 040501
ER -