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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. 
Title:
Measuring nanomechanical motion with an imprecision below the standard quantum limit 
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 
Publisher:
American Physical Society APS