Noiseless Quantum Measurement and Squeezing of Microwave Fields Utilizing Mechanical Vibrations

C. F. Ockeloen-Korppi, E. Damskägg, J. M. Pirkkalainen, T. T. Heikkilä, F. Massel, M. A. Sillanpää

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)

Abstract

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. The device also strongly squeezes microwave radiation 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.

Original languageEnglish
Article number103601
JournalPhysical Review Letters
Volume118
Issue number10
DOIs
Publication statusPublished - 6 Mar 2017
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy

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