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TICTOCGRAV SIGNED

Exploring Gravity with Ultracold Cadmium and Strontium Optical Clocks and Bragg Interferometers

Total Cost €

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EC-Contrib. €

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Partnership

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 TICTOCGRAV project word cloud

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

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Project "TICTOCGRAV" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITA DEGLI STUDI DI FIRENZE 

Organization address
address: Piazza San Marco 4
city: Florence
postcode: 50121
website: http://www.unifi.it

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 Italy [IT]
 Total cost 1˙999˙011 €
 EC max contribution 1˙999˙011 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-COG
 Funding Scheme ERC-COG
 Starting year 2018
 Duration (year-month-day) from 2018-06-01   to  2023-05-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITA DEGLI STUDI DI FIRENZE IT (Florence) coordinator 1˙999˙011.00

Map

 Project objective

The main aim of the TICTOCGRAV is to explore the limits of contemporary physics with a new generation of atomic quantum sensors, namely optical atomic clocks and atomic gravimeters.

After 100 years of General Relativity and Quantum Mechanics, both theories have been tested at an unprecedented level. Direct detection of gravitational waves is a great success and represents another impressive confirmation of the present theory of gravitation GR. Indeed, we are living a “Quantum Revolution”, in which advanced quantum concepts are at the heart of several devices, from precision navigation and location on Earth to secure communication protocols based on entangled photons. Despite all these great success in both areas, unfortunately, we still lack a full comprehension at the fundamental level. As a matter of fact, a full quantum treatment of space-time is still under discussion in the community. While several theoretical attempts have been pursued, a clear solution to the problem does not exist yet. Very likely, an answer to this problem will come from high precision experiments capable of measuring tiny gravitational effects on quantum systems as atomic clocks and quantum inertial sensors. TICTOCGRAV will address this questions experimentally by performing ultimate precision tests of gravity with fountains of alkali-earth metals, namely Cadmium and Strontium atoms.

Specifically, TICTOCGRAV will perform the highest precision tests so far of: -the weak equivalence principle (WEP) below 10^-13 with quantum probes, exploring also possible tests of spin-gravity couplings at the same level; - quantum interference of high precision clocks in a gravitational potential; demonstrating for the first time gravity induced decoherence mechanisms, opening the way towards a possible explanation of quantum to classical transition in macroscopically entangled quantum systems.

 Publications

year authors and title journal last update
List of publications.
2019 Athreya Shankar, Leonardo Salvi, Maria Luisa Chiofalo, Nicola Poli, Murray J Holland
Squeezed state metrology with Bragg interferometers operating in a cavity
published pages: 45010, ISSN: 2058-9565, DOI: 10.1088/2058-9565/ab455d
Quantum Science and Technology 4/4 2020-02-05
2020 Liang Hu, Enlong Wang, Leonardo Salvi, Jonathan N Tinsley, Guglielmo M Tino, Nicola Poli
Sr atom interferometry with the optical clock transition as a gravimeter and a gravity gradiometer
published pages: 14001, ISSN: 0264-9381, DOI: 10.1088/1361-6382/ab4d18
Classical and Quantum Gravity 37/1 2020-02-05
2019 Guglielmo M. Tino, Angelo Bassi, Giuseppe Bianco, Kai Bongs, Philippe Bouyer, Luigi Cacciapuoti, Salvatore Capozziello, Xuzong Chen, Maria L. Chiofalo, Andrei Derevianko, Wolfgang Ertmer, Naceur Gaaloul, Patrick Gill, Peter W. Graham, Jason M. Hogan, Luciano Iess, Mark A. Kasevich, Hidetoshi Katori, Carsten Klempt, Xuanhui Lu, Long-Sheng Ma, Holger Müller, Nathan R. Newbury, Chris W. Oates, Achim
SAGE: A proposal for a space atomic gravity explorer
published pages: , ISSN: 1434-6060, DOI: 10.1140/epjd/e2019-100324-6
The European Physical Journal D 73/11 2020-02-05

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