TY - JOUR
T1 - Generation and characterization of bound entanglement in optical qubits
AU - Kaneda, Fumihiro
AU - Shimizu, Ryosuke
AU - Mitsumori, Yasuyoshi
AU - Kosaka, Hideo
AU - Edamatsu, Keiichi
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/3
Y1 - 2011/3
N2 - For efficient quantum information processing (QIP), pure and strong entanglement in qubits has been thought to be indispensable. However, it was recently pointed out that bound entangled states, which involve undistillable entanglement between qubits, also have great potential for QIP. In this paper, we report the efficient generation of a four-qubit bound entangled state referred to as the Smolin state using photon polarization qubits. We observed the unlockable bound entanglement which is the specific property of the Smolin state.
AB - For efficient quantum information processing (QIP), pure and strong entanglement in qubits has been thought to be indispensable. However, it was recently pointed out that bound entangled states, which involve undistillable entanglement between qubits, also have great potential for QIP. In this paper, we report the efficient generation of a four-qubit bound entangled state referred to as the Smolin state using photon polarization qubits. We observed the unlockable bound entanglement which is the specific property of the Smolin state.
KW - Entanglement
KW - Quantum information
KW - Quantum state preparation
UR - http://www.scopus.com/inward/record.url?scp=79960572458&partnerID=8YFLogxK
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U2 - 10.2201/NiiPi.2011.8.3
DO - 10.2201/NiiPi.2011.8.3
M3 - Article
AN - SCOPUS:79960572458
SP - 27
EP - 31
JO - NII Journal
JF - NII Journal
SN - 1349-8614
IS - 8
ER -