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Measurements on trapped laser-cooled ions using quantum computations

By C. D\u27Helon and G. J. Milburn


We show that a series of quantum computations involving an isolated N-quantum-bit ion register can be used to make an approximate quantum nondemolition measurement of the number state distribution of a collective vibrational mode. A unitary transformation is applied to the Fourier transformed state of the ion register to copy the vibrational statistics to the electronic mode, and the number state distribution is then measured in the electronic number state basis using the quantum jumps technique

Topics: Physics, Multidisciplinary, Physics, PHYSICS, MULTIDISCIPLINARY, 3107 Atomic and Molecular Physics, and Optics
Publisher: American Physical Society
Year: 1996
DOI identifier: 10.1103/PhysRevA.54.5141
OAI identifier: oai:espace.library.uq.edu.au:UQ:247680

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