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Quantum Optomechanics in 3D

Total Cost €


EC-Contrib. €






Project "QOM3D" data sheet

The following table provides information about the project.


Organization address
address: STEVINWEG 1
city: DELFT
postcode: 2628 CN

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 Netherlands [NL]
 Total cost 1˙999˙594 €
 EC max contribution 1˙999˙594 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2015-CoG
 Funding Scheme ERC-COG
 Starting year 2016
 Duration (year-month-day) from 2016-07-01   to  2021-06-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    TECHNISCHE UNIVERSITEIT DELFT NL (DELFT) coordinator 1˙999˙594.00


 Project objective

Optomechanics is a field that aims to detect and control mechanical motion with light, ultimately at the quantum level. Experiments reaching the mechanical quantum ground state established optomechanics as a rapidly growing new field. Now that the quantum ground state has been reached, what is the next step?

The current goal of the field is quantum superposition states of motion. An example of this is a mechanical “Schrodinger cat” state, in which a drum is in a quantum superposition of vibrating up and vibrating down at the same time. From a technological perspective, such states could be used as a memory for storage of quantum information, or as a quantum bit itself, performing quantum calculations with a mechanical object. From a fundamental perspective, Schrodinger cat states could be used to explore the limits of macroscopic quantum mechanics and to look for the boundary between the quantum and classical worlds. Despite their recent success, the coupling between light and motion in current implementations is too weak to achieve non-classical motion.

Here, I propose a new optomechanical system coupling the motion of a millimeter-sized membrane to quantum microwave “light” in a three-dimensional superconducting cavity. In this new system, I will use the exceptional coherence photons in 3D cavities to strongly enhance the coupling of light and motion. To demonstrate the feasibility of this idea, I present preliminary data from a proof-of-concept device with coupling that is already close to state-of-the-art, with an outlook to scaling significantly beyond implementations shown to date.

With the team funded by this project, I will implement these feasible but challenging steps, creating a system with optomechanical coupling that can potentially reach the strong coupling regime for a single photon. Using this new strong coupling, I will bring optomechanics to a new regime where one can create and explore quantum superpositions of massive, macroscopic objects.


year authors and title journal last update
List of publications.
2017 Mario F. Gely, Adrian Parra-Rodriguez, Daniel Bothner, Ya. M. Blanter, Sal J. Bosman, Enrique Solano, Gary A. Steele
Convergence of the multimode quantum Rabi model of circuit quantum electrodynamics
published pages: 245115-1 till 24, ISSN: 2469-9950, DOI: 10.1103/physrevb.95.245115
Physical Review B 95/24 2019-06-18
2019 C. F. Ockeloen-Korppi, M. F. Gely, E. Damskägg, M. Jenkins, G. A. Steele, M. A. Sillanpää
Sideband cooling of nearly degenerate micromechanical oscillators in a multimode optomechanical system
published pages: 023826-1 - 023, ISSN: 2469-9926, DOI: 10.1103/physreva.99.023826
Physical Review A 99/2 2019-04-18
2018 Mario F. Gely, Gary A. Steele, Daniel Bothner
Nature of the Lamb shift in weakly anharmonic atoms: From normal-mode splitting to quantum fluctuations
published pages: 053808-1 - 05380, ISSN: 2469-9926, DOI: 10.1103/physreva.98.053808
Physical Review A 98/5 2019-03-12
2017 Sal J. Bosman, Mario F. Gely, Vibhor Singh, Daniel Bothner, Andres Castellanos-Gomez, Gary A. Steele
Approaching ultrastrong coupling in transmon circuit QED using a high-impedance resonator
published pages: 224515-1 - 22451, ISSN: 2469-9950, DOI: 10.1103/physrevb.95.224515
Physical Review B 95/22 2019-03-11

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