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Title:

Measuring nanomechanical motion with an imprecision below the standard quantum limit

Document type:
Zeitschriftenaufsatz
Author(s):
Anetsberger, G.; Gavartin, E.; Arcizet, O.; Unterreithmeier, Q.P.; Weig, E.M.; Gorodetsky, M.L.; Kotthaus, J.P.; Kippenberg, T.J.
Abstract:
We report a room-temperature measurement of nanomechanical motion with an imprecision below the standard quantum limit (SQL), using cavity-enhanced optical near fields. Fundamental thermodynamical cavity frequency fluctuation limits the total imprecision to 3dB below the SQL at room temperature [corresponding to (530am/√Hz)2 in absolute units] and is expected to reduce to negligible values at moderate cryogenic temperatures. Coupling strengths exceeding those required to reach the SQL by more th...     »
Journal title:
Phys. Rev. A 82, 061804(R) 2010-12
Year:
2010
Year / month:
2010-12
Quarter:
4. Quartal
Month:
Dec
Language:
en
Fulltext / DOI:
doi:10.1103/PhysRevA.82.061804
WWW:
https://journals.aps.org/pra/abstract/10.1103/PhysRevA.82.061804
Publisher:
American Physical Society APS
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