期刊
CHEMICAL PHYSICS LETTERS
卷 340, 期 5-6, 页码 509-516出版社
ELSEVIER
DOI: 10.1016/S0009-2614(01)00421-3
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An alternative method of preparing the pseudo-pure state of a spin system for quantum computation in liquid-state nuclear magnetic resonance (NMR) is demonstrated experimentally. Applying specific line-selective pulses with appropriately chosen flipping angles simultaneously and then a field gradient pulse we acquire straightforwardly all pseudo-pure states for two qubits in a single experiment quite efficiently. The signal intensity from the pseudo-pure state prepared in this way is the same as that of temporal averaging. As an example of an application, a highly structured search algorithm - Hogg's algorithm - is also performed on the pseudo-pure state /00) prepared by the method. (C) 2001 Elsevier Science B.V. All rights reserved.
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