Zobrazeno 1 - 10 of 665 pro vyhledávání: '"Beckman, David A."'
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Measurability of Wilson loop operators
Autor: Beckman, David, Gottesman, Daniel, Kitaev, Alexei, Preskill, John
Publikováno v: Phys.Rev. D65 (2002) 065022
We show that the nondemolition measurement of a spacelike Wilson loop operator W(C) is impossible in a relativistic non-Abelian gauge theory. In particular, if two spacelike-separated magnetic flux tubes both link with the loop C, then a nondemolitio
Externí odkaz: http://arxiv.org/abs/hep-th/0110205
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Causal and localizable quantum operations
Autor: Beckman, David, Gottesman, Daniel, Nielsen, M. A., Preskill, John
Publikováno v: Phys.Rev. A64 (2001) 052309
We examine constraints on quantum operations imposed by relativistic causality. A bipartite superoperator is said to be localizable if it can be implemented by two parties (Alice and Bob) who share entanglement but do not communicate; it is causal if
Externí odkaz: http://arxiv.org/abs/quant-ph/0102043
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Efficient Networks for Quantum Factoring
Autor: Beckman, David, Chari, Amalavoyal N., Devabhaktuni, Srikrishna, Preskill, John
Publikováno v: Phys. Rev.A54:1034-1063,1996
We consider how to optimize memory use and computation time in operating a quantum computer. In particular, we estimate the number of memory qubits and the number of operations required to perform factorization, using the algorithm suggested by Shor.
Externí odkaz: http://arxiv.org/abs/quant-ph/9602016
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