Events Calendar

A Return to the Optimal Detection of Quantum Information

Speaker: Min-Hsiu Hsieh, University of Technology, Sydney

Talk Title: A Return to the Optimal Detection of Quantum Information

Abstract: In 1991, Asher Peres and William Wootters wrote a seminal paper on the nonlocal processing of quantum information [Phys. Rev. Lett. 66 1119 (1991)]. We return to their classic problem and solve it in various contexts. Specifically, for discriminating the “double trine” ensemble with minimum error, we prove that global operations are more powerful than local operations with classical communication (LOCC). Even stronger, there exists a finite gap between the optimalLOCC probability and that obtainable by separable operations (SEP). Additionally we prove that a two-way, adaptive LOCC strategy can always beat a one-way protocol. Our results provide the first known instance of “nonlocality without entanglement” in two qubit pure states. (Joint work with Eric Chitambar.)

Biography: Min-Hsiu Hsieh received the Ph.D. degree from University of Southern California, Los Angeles, in 2008. From 2008-2010, he was a Researcher at the ERATO-SORST Quantum Computation and Information Project, Japan Science and Technology Agency, Tokyo, Japan. From 2010-2012, he was a Postdoctoral Researcher at the Statistical Laboratory in the Centre for Mathematical Sciences, the University of Cambridge, UK. He is now a Chancellor’s Postdoctoral Fellow / Lecturer in Centre for Quantum Computation & Intelligent Systems (QCIS), Faculty of Engineering and Information Technology (FEIT), University of Technology, Sydney (UTS).


Host: Todd Brun, x03503, tbrun@usc.edu

Location: Seaver Science Library (SSL) - 150

Audiences: Everyone Is Invited

Contact: Gerrielyn Ramos