Online ISSN:1349-8606
Progress in Informatics  
No.8 March 2011  
Page 27-31 PDF(1,631KB) | References
Generation and characterization of bound entanglement in optical qubits
Fumihiro KANEDA1, Ryosuke SHIMIZU2, Yasuyoshi MITSUMORI3, Hideo KOSAKA4 and Keiichi EDAMATSU5
1,3,4,5Research Institute of Electrical Communication, Tohoku University
2PRESTO, Japan Science and Technology Agency (JST)
(Received: October 31,2010)
(Revised: December 2,2010)
(Accepted: December 28,2010)
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.
Quantum information, entanglement, quantum state preparation
PDF(1,631KB) | References

National Institute of Informatics is a member of CrossRef.
Go back HOME