Noiseless Quantum Measurement and Squeezing of Microwave Fields Utilizing Mechanical Vibrations

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Caspar Ockeloen-Korppi
  • Erno Damskägg
  • Juha-Matti Pirkkalainen
  • Tero Heikkilä
  • Francesco Massel
  • Mika Sillanpää

Research units

  • University of Jyväskylä

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.

Details

Original languageEnglish
Article number103601
Pages (from-to)1-5
JournalPhysical Review Letters
Volume118
Issue number10
Publication statusPublished - 6 Mar 2017
MoE publication typeA1 Journal article-refereed

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