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Cloning Of Continuous Quantum Variables
PHYSICAL REVIEW LETTERS, no. 8 (2000): 1754-1757
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摘要
The cloning of quantum variables with continuous spectra is analyzed. A Gaussian quantum cloning machine is exhibited that copies equally well the states of two conjugate variables such as position and momentum. It also duplicates all coherent states with a fidelity of 2/3. More generally, the copies are shown to obey a no-cloning Heisenb...更多
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