Quantum correlation in disordered spin systems: Applications to magnetic sensing
Author(s)Lukin, M. D.; Cappellaro, Paola
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We propose a strategy to generate a many-body entangled state in a collection of randomly placed, dipolarly coupled electronic spins in the solid state. By using coherent control to restrict the evolution into a suitable collective subspace, this method enables the preparation of GHZ-like and spin-squeezed states even for randomly positioned spins, while in addition protecting the entangled states against decoherence. We consider the application of this squeezing method to improve the sensitivity of nanoscale magnetometer based on nitrogen-vacancy spin qubits in diamond.
DepartmentMassachusetts Institute of Technology. Department of Nuclear Science and Engineering
Physical Review A
American Physical Society
Cappellaro, P., and M. D. Lukin. “Quantum correlation in disordered spin systems: Applications to magnetic sensing.” Physical Review A 80.3 (2009): 032311. © 2009 The American Physical Society.
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