Backaction-evading measurement of mechanical motion in the optical domain
When measuring the position of a mechanical oscillator, quantum mechanics imposes a strict limit on the attainable precision: Any reduction of imprecision leads to increased quantum backaction of the measuring probe on the oscillator. This quantum limit can be circumvented, in principle allowing to indefinitely reduce imprecision, by monitoring only a single quadrature of the oscillator. Such backaction-evading measurement has been recently demonstrated in electromechanical oscillators coupled to microwave resonant circuits. Here we demonstrate this technique in a photonic crystal nanomechanical oscillator, cryogenically and optomechanically cooled to a few quanta.
WOS:000454732000014
2018-01-01
978-1-5090-6374-1
New York
International Conference on Optical MEMS and Nanophotonics
26
27
REVIEWED
Event name | Event place | Event date |
Lausanne, SWITZERLAND | Jul 29-Aug 02, 2018 | |