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quMercury SIGNED

Ultracold mercury for a measurement of the EDM

Total Cost €


EC-Contrib. €






 quMercury project word cloud

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

parity    particles    obtain    molecule    fundamental    standard    theories    einstein    sensitivity    accurately    optics    investigator    stringent    cooling    violation    atoms    optical    model    performance    mercury    clocks    permanent    first    respect    community    quantum    employing    conciliate    vacuum    upper    limit    dipole    few    hg    construct    tremendously    moment    massive    pioneering    principal    symmetry    lasers    cold    invariance    utilized    sizeable    nuclear    technologies    vuv    charge    gas    time    detection    combined    extensions    bose    clock    sm    temperature    fermi    detected    electrons    condensate    respected    observations    samples    successful    largely    lattice    particle    degenerate    ground    experiment    universe    world    seek    physics    neutrons    readily    expertise    ultraviolet    ultracold    coherent    footing    innovations    experiments    fails    antimatter    realistic    breaking    room    simulations    coherence    strontium    evident    body    199    efficiency    introduce    describe    edm    atomic    gases    reflect    electric    complement    inspire    thereby    asymmetry    electron    cp   

Project "quMercury" data sheet

The following table provides information about the project.


Organization address
city: BONN
postcode: 53113

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 Germany [DE]
 Project website
 Total cost 1˙939˙263 €
 EC max contribution 1˙939˙263 € (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 2018-04-01   to  2023-03-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

The Standard Model of particle physics (SM), while largely successful, fails to accurately describe the state of the Universe, e.g. with respect to the evident matter/antimatter asymmetry. Various theories seek to conciliate the SM with observations by extending it, and most of these extensions introduce a massive violation of the combined charge invariance and parity (CP) symmetry. The CP violation would reflect in a sizeable permanent electric dipole moment (EDM) of fundamental particles, large enough to be detected by realistic future experiments.

A few pioneering experiments already set out to measure the EDM of neutrons, electrons, or atoms. The most stringent upper limit to any EDM is currently obtained by an experiment based on room-temperature gases of mercury. I propose to take this approach to the quantum world by employing ultracold or even quantum-degenerate mercury samples.

To this end, we will construct a dedicated quantum gas experiment. We will develop advanced cooling methods, obtain the world’s first Bose-Einstein condensate and degenerate Fermi gas of mercury, and introduce vacuum ultraviolet (VUV) lasers to the field. These ground-breaking innovations will increase the coherence time of the sample, enable a higher detection efficiency, and exploit coherent effects, thereby increasing the sensitivity tremendously. Our measurements of the Hg-199 atomic EDM will complement cold-molecule measurements of the electron's EDM.

Technologies developed here can readily be utilized to improve the performance of Hg lattice clocks and will inspire quantum simulations of unique many-body systems.

The principal investigator of this project is highly respected for his pioneering work on degenerate quantum gases of strontium. His current work on a nuclear optical clock introduced him to VUV optics and strengthened his footing in the community. Bringing together his expertise in these two fields – quantum gases and VUV optics – will lead the project to success.

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The information about "QUMERCURY" are provided by the European Opendata Portal: CORDIS opendata.

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