TY - GEN
T1 - Measuring nanomechanical motion with an imprecision below that at the standard quantum limit
AU - Anetsberger, G.
AU - Verlot, P.
AU - Gavartin, E.
AU - Arcizet, O.
AU - Unterreithmeier, Q. P.
AU - Weig, E. M.
AU - Gorodetsky, M. L.
AU - Kotthaus, J. P.
AU - Kippenberg, T. J.
PY - 2011
Y1 - 2011
N2 - In the past decade, impressive efforts have been powered in the field of optomechanics that is the study of the coupling between a light field and a mechanical degree of freedom, with the major aims of detecting the quantum zero-point motion fluctuations of a mechanical object, and studying the fundamental quantum measurement processes. Though having their own specificities, both aims require combining ultra-high sensitivity readout together with ultra-sensitive mechanical response, sharing for example the common condition to involve measurement schemes limited at a level better than that of the Standard Quantum Limit (SQL) [1]. Using optical readout, we demonstrate for the first time sub-SQL imprecision for nanomechanical motion at room temperature. By using a cavity optomechanical near-field coupling scheme with more than one order of magnitude improved optomechanical coupling coefficients [2] combined with homodyne detection we reach a room-temperature imprecision 3 dB below the SQL launching only 1 W of optical input power (see Fig. 1).
AB - In the past decade, impressive efforts have been powered in the field of optomechanics that is the study of the coupling between a light field and a mechanical degree of freedom, with the major aims of detecting the quantum zero-point motion fluctuations of a mechanical object, and studying the fundamental quantum measurement processes. Though having their own specificities, both aims require combining ultra-high sensitivity readout together with ultra-sensitive mechanical response, sharing for example the common condition to involve measurement schemes limited at a level better than that of the Standard Quantum Limit (SQL) [1]. Using optical readout, we demonstrate for the first time sub-SQL imprecision for nanomechanical motion at room temperature. By using a cavity optomechanical near-field coupling scheme with more than one order of magnitude improved optomechanical coupling coefficients [2] combined with homodyne detection we reach a room-temperature imprecision 3 dB below the SQL launching only 1 W of optical input power (see Fig. 1).
UR - http://www.scopus.com/inward/record.url?scp=80052288556&partnerID=8YFLogxK
U2 - 10.1109/CLEOE.2011.5943378
DO - 10.1109/CLEOE.2011.5943378
M3 - Conference contribution
AN - SCOPUS:80052288556
SN - 9781457705335
T3 - 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011
BT - 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011
T2 - 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011
Y2 - 22 May 2011 through 26 May 2011
ER -