Publications associated with Quantum Spin Dynamics


Magnetic field sensors using 13-spin cat states

Physical Review A - Atomic, Molecular, and Optical Physics 82 (2010)

S Simmons, JA Jones, SD Karlen, A Ardavan, JJL Morton

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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