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Magnetic field sensors using 13-spin cat states

Abstract:
Measurement devices could benefit from entangled correlations to yield a measurement sensitivity approaching the physical Heisenberg limit. Building upon previous magnetometric work using pseudoentangled spin states in solution-state NMR, we present two conceptual advancements to better prepare and interpret the pseudoentanglement resource. We apply these to a 13-spin cat state to measure the local magnetic field with a 12.2 sensitivity increase over an equivalent number of isolated spins. © 2010 The American Physical Society.

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Publisher copy:
10.1103/PhysRevA.82.022330

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
Journal:
Physical Review A - Atomic, Molecular, and Optical Physics More from this journal
Volume:
82
Issue:
2
Publication date:
2010-08-26
DOI:
EISSN:
1094-1622
ISSN:
1050-2947
Language:
English
Pubs id:
pubs:161690
UUID:
uuid:90c90d0c-f889-4ba1-a07f-3b2606b3464e
Local pid:
pubs:161690
Source identifiers:
161690
Deposit date:
2013-11-16

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