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Stimulated Brillouin Scattering based RF to Optical Signal Transduction and Amplification

Total Cost €


EC-Contrib. €






 SBS3-5 project word cloud

Explore the words cloud of the SBS3-5 project. It provides you a very rough idea of what is the project "SBS3-5" about.

paramount    platform    coupling    modal    confined    photonics    energy    extend    kbt    processors    superconducting    noise    materials    qubit    faint    et    excitation    piezoelectric    while    dilution    mri    communicate    optic    frequency    telecom    holding    cryogenic    scattering    regimes    signals    single    limited    shot    issue    al    transducer    optical    interactions    swamps    optomechanical    becomes    photon    interfacing    acousto    lower    converting    stimulated    astronomy    waves    signal    circuitry    balram    schemes    amplifiers    overlap    detectors    helps    gaas    fridges    radio    acoustic    microwave    benefit    conventional    gain    advantages    domain    quantum    routine    elasto    linking    johnson    regime    transduction    efficient    fiber    distant    rf    propagating    engineering    sbs    coefficient    cavity    detection    fibers    tightly    weak    2016    kc    brillouin    thermal    insulator    figures    modes    favorable    nature    radar    map   

Project "SBS3-5" data sheet

The following table provides information about the project.


Organization address
postcode: BS8 1QU

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country United Kingdom [UK]
 Total cost 1˙712˙581 €
 EC max contribution 1˙712˙581 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-STG
 Funding Scheme ERC-STG
 Starting year 2018
 Duration (year-month-day) from 2018-01-01   to  2022-12-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITY OF BRISTOL UK (BRISTOL) coordinator 1˙712˙581.00


 Project objective

While the detection of weak signals (down to the single photon level) in the optical frequency range is routine on account of the high photon energy (compared to thermal excitation energy kBT) and the availability of efficient detectors, this is not the case in the radio frequency (RF) and microwave frequency regimes wherein thermal (Johnson) noise in detectors swamps out the faint RF signals (in applications from radio astronomy, MRI to radar) and requires the use of cryogenic amplifiers. The ability to map signals efficiently from the microwave to optical regime becomes paramount for distant systems to communicate with each other using low loss telecom fibers. Both classical (radio over fiber systems) and quantum (linking two superconducting qubit processors in two dilution fridges) information processing systems will benefit greatly from the development of an efficient RF to optical signal transducer. I have been developing efficient RF to optical transduction schemes in GaAs cavity optomechanical systems (KC Balram et al., Nature Photonics (2016)) by exploiting its favorable piezoelectric (for coupling RF signals to propagating acoustic waves) and elasto-optic (for engineering strong acousto-optic interactions) properties. In this project, I would like to extend this work and address the issue of weak RF signal detection by up-converting RF signals to the optical domain using integrated Stimulated Brillouin Scattering (SBS) and shot-noise limited optical detection. Piezoelectric SBS systems can also be used to build high frequency, high gain RF amplifiers with noise figures that can be lower than conventional RF amplifiers. Working in a novel GaAs on insulator platform helps provide some unique advantages (tightly confined acoustic and optical modes with large modal overlap and a large elasto-optic coefficient leading to significant Brillouin gain) while holding the potential for interfacing complex circuitry in a well-established III-V materials platform.


List of deliverables.
Data Management Plan Open Research Data Pilot 2019-07-22 17:13:01

Take a look to the deliverables list in detail:  detailed list of SBS3-5 deliverables.

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