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PREMOL SIGNED

At the crossroad of molecular physics, quantum optics and spectroscopy:ultra-high-precision molecular spectroscopy for fundamental physics

Total Cost €

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EC-Contrib. €

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Partnership

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Project "PREMOL" data sheet

The following table provides information about the project.

Coordinator
HEINRICH-HEINE-UNIVERSITAET DUESSELDORF 

Organization address
address: UNIVERSITAETSSTRASSE 1
city: DUSSELDORF
postcode: 40225
website: www.uni-duesseldorf.de

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]
 Total cost 2˙500˙000 €
 EC max contribution 2˙500˙000 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-ADG
 Funding Scheme ERC-ADG
 Starting year 2018
 Duration (year-month-day) from 2018-09-01   to  2023-08-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    HEINRICH-HEINE-UNIVERSITAET DUESSELDORF DE (DUSSELDORF) coordinator 2˙500˙000.00

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 Project objective

Molecules have an enormous potential in the field of frequency metrology-based fundamental physics, yet have so far not played an important role, due to difficult experimental challenges. The goal of this project is to overcome these difficulties by developing new techniques, thus opening a new chapter in precision molecular spectroscopy. Furthermore, it will have far-reaching impact in fundamental physics:

(1) A 500-fold improved limit to the existence of a “fifth force” with range on the 0.1 nm scale. (2) An independently determined set of the fundamental constants me/mp, me/md, and the Rydberg constant R∞. Their uncertainties will be reduced compared to CODATA2014 by up to a factor of 23 for me/mp, 4 for me/md, and 2 for R∞; (3) A test of the current muonic atom discrepancies of proton and deuteron charge radii rp and rd at the 30% and 50% level, respectively; (4) Achieve a precision 1×10-16 in molecular ion spectroscopy, thus exploring the feasibility of using, in the future, molecular ions for testing the time-dependence of me/mp and mp/md.

Molecular hydrogen ions (MHIs) are the systems in principle suitable for providing these results: indeed, the required ab initio theory has made outstanding advances, reaching the 8×10-12 inaccuracy level. To date, experimental results are orders of magnitude less precise. In order to achieve an accuracy surpassing the theoretical one, this project shall develop new quantum optical techniques, including: - Doppler-free spectroscopy, rotational and ro-vibrational; - preparation of a single molecular ion in a single internal quantum state; - resolution and control of systematic shifts at levels from 1×10-12 to 1×10-16; - novel spectroscopy laser systems. These techniques will be of general applicability in the field of molecular ion spectroscopy.

The proposed work is based on the wide experience of the PI in precision measurements and will make a strong and overdue contribution to spectroscopy and fundamental physics.

 Publications

year authors and title journal last update
List of publications.
2020 S. Alighanbari et al.
to come
published pages: , ISSN: 0028-0836, DOI:
Nature to come 2020-03-23

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