Magnetic field sensors using 13-spin cat states
Journal Article
·
· Physical Review. A
- Department of Materials, Oxford University, Oxford OX1 3PH (United Kingdom)
- CAESR, Clarendon Laboratory, Oxford University, Oxford OX1 3PU (United Kingdom)
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.
- OSTI ID:
- 21448477
- Journal Information:
- Physical Review. A, Vol. 82, Issue 2; Other Information: DOI: 10.1103/PhysRevA.82.022330; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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