期刊
PHYSICS LETTERS A
卷 308, 期 2-3, 页码 96-100出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0375-9601(02)01803-0
关键词
quantum computation
What resources are universal for quantum computation? In the standard model of a quantum computer, a computation consists of a sequence of unitary gates acting coherently on the qubits making up the computer. This requirement for coherent unitary dynamical operations is widely believed to be the critical element of quantum computation. Here we show that a very different model involving only projective measurements and quantum memory is also universal for quantum computation. In particular, no coherent unitary dynamics are involved in the computation. (C) 2003 Elsevier Science B.V. All rights reserved.
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