Unconditionally Secure Quantum Communications Via Decoherence-Free Subspaces
نویسندگان
چکیده
منابع مشابه
Decoherence-Free Subspaces for Quantum Computation
Decoherence in quantum computers is formulated within the semigroup approach. The error generators are identified with the generators of a Lie algebra. This allows for a comprehensive description which includes as a special case the frequently assumed spin-boson model. A generic condition is presented for errorless quantum computation: decoherence-free subspaces are spanned by those states whic...
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We show how to realize, by means of non-Abelian quantum holonomies, a set of universal quantum gates acting on decoherence-free subspaces and subsystems. In this manner we bring together the quantum coherence stabilization virtues of decoherence-free subspaces and the fault tolerance of all-geometric holonomic control. We discuss the implementation of this scheme in the context of quantum infor...
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Signature schemes, proposed in 1976 by Diffie and Hellman, have become ubiquitous across modern communications. They allow for the exchange of messages from one sender to multiple recipients, with the guarantees that messages cannot be forged or tampered with and that messages also can be forwarded from one recipient to another without compromising their validity. Signatures are different from,...
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Zheng-Wei Zhou, Bo Yu, Xingxiang Zhou, Marc J. Feldman, and Guang-Can Guo Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, People’s Republic of China Superconducting Digital Electronics Laboratory, Electrical and Computer Engineering Department, University of Rochester, Rochester, New York 14627, USA (Received 16 January 2004; published 30 June...
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ژورنال
عنوان ژورنال: Journal of Information Security and Cryptography (Enigma)
سال: 2015
ISSN: 2595-5217
DOI: 10.17648/enig.v1i1.13