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Proceedings Paper

Experimental implementation of the universal transpose operation
Author(s): Hyang-Tag Lim; Young-sik Ra; Yong-Su Kim; Joonwoo Bae; Yoon-Ho Kim
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Paper Abstract

The universal transpose of quantum states is an anti-unitary transformation that is not allowed in quantum theory. In this work, we investigate approximating the universal transpose of quantum states of two-level systems (qubits) using the method known as structural physical approximation. We also report its experimental implementation in linear optics. The scheme is optimal in that the maximal fidelity is attained, and also practical as measurement and preparation of quantum states that are experimentally feasible within current technologies are solely applied.

Paper Details

Date Published: 12 February 2011
PDF: 7 pages
Proc. SPIE 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV, 79480J (12 February 2011); doi: 10.1117/12.879335
Show Author Affiliations
Hyang-Tag Lim, Pohang Univ. of Science and Technology (Korea, Republic of)
Young-sik Ra, Pohang Univ. of Science and Technology (Korea, Republic of)
Yong-Su Kim, 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. 7948:
Advances in Photonics of Quantum Computing, Memory, and Communication IV
Zameer Ul Hasan; Philip R. Hemmer; Hwang Lee; Charles M. Santori, Editor(s)

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