Measurement noise 100 times lower than the quantum-projection limit using entangled atoms

Onur Hosten, Nils J. Engelsen, Rajiv Krishnakumar and Mark A. Kasevich ()
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Onur Hosten: Stanford University
Nils J. Engelsen: Stanford University
Rajiv Krishnakumar: Stanford University
Mark A. Kasevich: Stanford University

Nature, 2016, vol. 529, issue 7587, 505-508

Abstract: Quantum entanglement is thought to offer great promise for improving measurement precision; now a spin-squeezing implementation with cold atoms offers levels of sensitivity unavailable with any competing conventional method, sensing microwave induced rotations a factor of 70 beyond the standard quantum limit.

Date: 2016
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DOI: 10.1038/nature16176

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