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Quantum Optomechanics with Ultracoherent Soft–Clamped Resonators

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Abstract

Soft-clamped mechanical resonators realise quality factors Q ~ 109 and quantum cooperativities Cq ~ 60 already in a moderate cryogenic environment (e.g. a 4.2K flow cryostat). This enables both sideband and feedback cooling to the mechanical quantum ground state.

© 2018 The Author(s)

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