Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevA.79.012317
Title: Controlled measurement processes: Simple spin-chain model of controlled quantum-state amplification
Authors: Balachandran, V.
Gong, J. 
Issue Date: 5-Jan-2009
Citation: Balachandran, V., Gong, J. (2009-01-05). Controlled measurement processes: Simple spin-chain model of controlled quantum-state amplification. Physical Review A - Atomic, Molecular, and Optical Physics 79 (1) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.79.012317
Abstract: Controlled measurement processes with high fidelity and robustness will be of substantial interest to fundamental quantum studies as well as quantum-information processing. This work proposes a simple scheme to realize controlled measurements of the state of a single spin, via controlled quantum signal amplification in a one-dimensional spin-chain model. It is shown that, by adiabatically moving an external field applied to a spin chain that is also irradiated with a transverse driving field, a robust spin amplifier may be realized with little dispersion. Our results may find applications in spin-based quantum-information processing and in controlled growth of "Schrö dinger cat" states. © 2009 The American Physical Society.
Source Title: Physical Review A - Atomic, Molecular, and Optical Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/96090
ISSN: 10502947
DOI: 10.1103/PhysRevA.79.012317
Appears in Collections:Staff Publications

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