Reduced spin measurement back-action for a phase sensitivity ten times beyond the standard quantum limit
作者： J. G. Bohnet , K. C. Cox , M. A. Norcia , J. M. Weiner , Z. Chen
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摘要: The phase of a collection spins is measured with sensitivity ten times beyond the limit set by quantum noise an unentangled ensemble 87Rb atoms. A cavity-enhanced probe optical cycling transition employed to mitigate back-action associated state-changing transitions induced probe.
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