Theory of phase-mixing amplification in an optomechanical system

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2017
Major/Subject
Mcode
Degree programme
Language
en
Pages
1-14
Series
Quantum Science and Technology, Volume 2, issue 3
Abstract
The investigation of the ultimate limits imposed by quantum mechanics on amplification represents an important topic both on a fundamental level and from the perspective of potential applications. We discuss here a novel regime for bosonic linear amplifiers—beside phase-insensitive and phase-sensitive amplification—which we term here phase-mixing amplification. Furthermore, we show that phase-mixing amplification can be realised in a cavity optomechanical setup, constituted by a mechanical resonator which is dispersively coupled to an optomechanical cavity asymmetrically driven around both mechanical sidebands. While, in general, this amplifier is phase-mixing, for a suitable choice of parameters, the amplifier proposed here operates as a phase-sensitive amplifier. We show that both configurations allow amplification with an added noise below the quantum limit of (phase-insensitive) amplification in a parameter range compatible with current experiments in microwave circuit optomechanics. In particular, we show that introducing phase-mixing amplification typically allows for a significant reduction of the added noise.
Description
| openaire: EC/H2020/732894/EU//HOT
Keywords
optomechanics, quantum amplifier, quantum noise
Other note
Citation
Ockeloen-Korppi , C , Heikkilä , T , Sillanpää , M & Massel , F 2017 , ' Theory of phase-mixing amplification in an optomechanical system ' , Quantum Science and Technology , vol. 2 , no. 3 , 035002 , pp. 1-14 . https://doi.org/10.1088/2058-9565/aa78e3