Abstract

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 μW of optical input power (see Fig. 1).

© 2011 IEEE

PDF Article
More Like This
Measuring nanomechanical motion with an imprecision below that at the standard quantum limit

G. Anetsberger, P. Verlot, E. Gavartin, O. Arcizet, Q.P. Unterreithmeier, E. M. Weig, M. L. Gorodetsky, J. P. Kotthaus, and T. J. Kippenberg
QThM2 Quantum Electronics and Laser Science Conference (QELS) 2011

Optical Measurement of Nanomechanical Motion with an Imprecision at the Standard Quantum Limit

G. Anetsberger, O. Arcizet, E. Gavartin, Q. P. Unterreithmeier, E. M. Weig, M. L. Gorodetsky, J. P. Kotthaus, and T. J. Kippenberg
JMA3 Conference on Lasers and Electro-Optics (CLEO) 2010

Measuring Motion Below the Standard Quantum Limit by Strong Optomechanical Quantum Correlations

Junxin Chen, David Mason, Massimiliano Rossi, Yeghishe Tsaturyan, and Albert Schliesser
S3C.5 Quantum Information and Measurement (QIM) 2019

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription