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Proceedings Paper

Realizing physical approximation of the partial transpose
Author(s): Hyang-Tag Lim; Yong-Su Kim; Young-Sik Ra; Joonwoo Bae; Yoon-Ho Kim
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Paper Abstract

The partial transpose by which a subsystem's quantum state is solely transposed is of unique importance in quantum information processing from both fundamental and practical point of view. In this work, we present a practical scheme to realize a physical approximation to the partial transpose using local measurements on individual quantum systems and classical communication. We then report its linear optical realization and show that the scheme works with no dependence on local basis of given quantum states. A proof-of-principle demonstration of entanglement detection using the physical approximation of the partial transpose is also reported.

Paper Details

Date Published: 23 February 2012
PDF: 8 pages
Proc. SPIE 8272, Advances in Photonics of Quantum Computing, Memory, and Communication V, 82720J (23 February 2012); doi: 10.1117/12.910251
Show Author Affiliations
Hyang-Tag Lim, Pohang Univ. of Science and Technology (Korea, Republic of)
Yong-Su Kim, Pohang Univ. of Science and Technology (Korea, Republic of)
Young-Sik Ra, Pohang Univ. of Science and Technology (Korea, Republic of)
Joonwoo Bae, Korea Institute for Advanced Study (Korea, Republic of)
Yoon-Ho Kim, Pohang Univ. of Science and Technology (Korea, Republic of)


Published in SPIE Proceedings Vol. 8272:
Advances in Photonics of Quantum Computing, Memory, and Communication V
Zameer Ul Hasan; Philip R. Hemmer; Hwang Lee; Charles M. Santori, Editor(s)

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