6533b82afe1ef96bd128c30a
RESEARCH PRODUCT
Noiseless Quantum Measurement and Squeezing of Microwave Fields Utilizing Mechanical Vibrations
Caspar Ockeloen-korppiErno DamskäggMika SillanpääFrancesco MasselJuha-matti PirkkalainenTero T. Heikkiläsubject
noiseFOS: Physical sciencesGeneral Physics and AstronomyQuantum measurement02 engineering and technology01 natural sciencesOpticsMesoscale and Nanoscale Physics (cond-mat.mes-hall)0103 physical sciences010306 general physicsQuantumPhysicsQuantum PhysicsCondensed Matter - Mesoscale and Nanoscale Physicsta114business.industrymittausnoiseless amplifications021001 nanoscience & nanotechnologymeluQuadrature (astronomy)VibrationAmplitudequantum systemsmeasurementQuantum Physics (quant-ph)0210 nano-technologybusinesscryogenic temperaturesMicrowavedescription
A process which strongly amplifies both quadrature amplitudes of an oscillatory signal necessarily adds noise. Alternatively, if the information in one quadrature is lost in phase-sensitive amplification, it is possible to completely reconstruct the other quadrature. Here we demonstrate such a nearly perfect phase-sensitive measurement using a cavity optomechanical scheme, characterized by an extremely small noise less than 0.2 quanta. We also observe microwave radiation strongly squeezed by 8 dB below vacuum. A source of bright squeezed microwaves opens up applications in manipulations of quantum systems, and noiseless amplification can be used even at modest cryogenic temperatures.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-03-06 |