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Title: Collapse and revival and cat states with an N-spin system
Authors: Dooley, Shane
McCrossan, Francis
Harland, Derek
Everitt, Mark J.
Spiller, T.P.
Issue Date: 2013
Publisher: © American Physical Society
Citation: DOOLEY, S. ... et al, 2013. Collapse and revival and cat states with an N-spin system. Physical Review A - Atomic, Molecular, and Optical Physics, 87 (5), 052323 [6pp.]
Abstract: We discuss collapse and revival of Rabi oscillations in a system comprising a qubit and a "big spin" (made of N qubits, or spin-1/2 particles). We demonstrate a regime of behavior analogous to conventional collapse and revival for a qubit-field system, employing spin coherent states for the initial state of the big spin. These dynamics can be used to create a cat state of the big spin. Even for relatively small values of N, states with significant potential for quantum metrology applications can result, giving sensitivity approaching the Heisenberg limit.
Description: This article was published in the journal, Physical Review A [© American Physical Society] and the definitive version is available at: http://dx.doi.org/10.1103/PhysRevA.87.052323
Version: Published
DOI: 10.1103/PhysRevA.87.052323
URI: https://dspace.lboro.ac.uk/2134/12643
Publisher Link: http://dx.doi.org/10.1103/PhysRevA.87.052323
ISSN: 1050-2947
Appears in Collections:Published Articles (Physics)

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