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12-09
2010
Quantum Protocols for Anonymous Voting and Surveying, Optimal Quantum Strong Coi
Abstract: Title: Quantum Protocols for Anonymous Voting and Surveying Abstract: In my talk, I will describle quantum protocols for voting and surveying based on the work of Vaccaro et.al. A key featu...
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12-03
2010
Quantum Network with Trapped Ions
Abstract: Trapped atomic ions have proven to be one of the most promising candidates for the realization of quantum network and quantum computation. In this talk, I will present the theoretical and e...
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10-09
2009
Quantum Computer: Status and Prospects
Abstract: 量子计算机的概念源于上个世纪八十年代，当时物理学家论证了“摩尔时代必将终结”，而量子计算是种全新的运算模式，有望成为后摩尔时代的新技术。几十年来量子计算的研究越来越受到学界、政界、军界的高度...
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05-07
2008
A substate theorem in classical and quantum information theory with some applica
Abstract: Suppose P, Q are probability distributions on the same sample space. Their relative entropy is defined as S(P||Q) = \sum_i P(i) \log (P(i) / Q(i)). The relative entropy is an important info...
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04-23
2008
Quantum walk based search algorithms
Abstract: In this survey talk we give an intuitive treatment of the discrete time quantization of classical Markov chains. Grover search and the quantum walk based search algorithms of Ambainis, Szeg...
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05-29
2007
Quantum communication complexity of block-composed functions
Abstract: A central open problem in communication complexity is whether or not quantum protocols can be exponentially more efficient than classical ones for computing a total Boolean function in the ...