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Conferences > CLEO_QELS > 2022 > FM4D > FM4D.6

Optimal purification of a spin ensemble by quantum-algorithmic feedback

Urs Haeusler, Daniel M. Jackson, Leon Zaporski, Jonathan H. Bodey, Noah Shofer, Edmund Clarke, Maxime Hugues, Mete Atatüre, Claire Le Gall, and Dorian A. Gangloff

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Abstract

We present a coherent quantum feedback algorithm to purify a mesoscopic spin ensemble at the ultimate level of a single spin. Applying it to a quantum dot narrowed nuclear-spin fluctuations by two orders of magnitude.

© 2022 The Author(s)

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