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Collapse and revival and cat states with an N-spin system

journal contribution
posted on 27.06.2013 by Shane Dooley, Francis McCrossan, Derek Harland, Mark Everitt, T.P. Spiller
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.

History

School

  • Science

Department

  • Physics

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.]

Publisher

© American Physical Society

Version

VoR (Version of Record)

Publication date

2013

Notes

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

ISSN

1050-2947

eISSN

1094-1622

Language

en

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