QLEDS

Quantum Logic Enabled test of Discrete Symmetries

Coordinatore	GOTTFRIED WILHELM LEIBNIZ UNIVERSITAET HANNOVER    more Spiacenti, non ci sono informazioni su questo coordinatore. Contattare Fabio per maggiori infomrazioni, grazie.
Nazionalità Coordinatore	Germany [DE]
Totale costo	1˙619˙640 €
EC contributo	1˙619˙640 €
Programma	FP7-IDEAS-ERC Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	ERC-2013-StG
Funding Scheme	ERC-SG
Anno di inizio	2013
Periodo (anno-mese-giorno)	2013-09-01   -   2018-08-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	GOTTFRIED WILHELM LEIBNIZ UNIVERSITAET HANNOVER  Organization address address: Welfengarten 1 city: HANNOVER postcode: 30167 contact info Titolo: Ms. Nome: Katrin Cognome: Pfennig Email: send email Telefono: +49511 7625125 Fax: +49 511 76219432	DE (HANNOVER)	hostInstitution	1˙619˙640.00
2	GOTTFRIED WILHELM LEIBNIZ UNIVERSITAET HANNOVER  Organization address address: Welfengarten 1 city: HANNOVER postcode: 30167 contact info Titolo: Prof. Nome: Christian Cognome: Ospelkaus Email: send email Telefono: -18868 Fax: -18881	DE (HANNOVER)	hostInstitution	1˙619˙640.00

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 Obiettivo del progetto (Objective)

'This proposal aims to apply ion-trap quantum logic techniques to precision measurements on individual (anti-)protons for fundamental physics tests. In particular, we aim to measure g-factors of single (anti-)protons as a precise test of CPT symmetry. This requires a method to detect single (anti-)proton spin flips. Current efforts based on classical “magnetic bottle” techniques are hurt by the extreme difficulty and slowness of the spin state detection. Discrete and direct state measurement is a prerequisite for inaccuracies below 10-6 and has not been achieved yet. Towards this end, we will employ a radically different approach and use quantum logic techniques developed by the PI in the NIST ion storage group of D. J. Wineland [Nature 476, 181(2011); Nature 471, 196(2011)]. This will allow us to transfer the (anti-)proton’s spin state to a nearby trapped atomic “logic” ion and subsequently read it out using standard quantum logic detection techniques along the lines of Heinzen and Wineland [PRA 42, 2977; J. Res. NIST 103, 259 (1998)]. The same ideas are also at the root of NIST’s world-record single-ion Al frequency standard. Ultimately, this quantum logic technique will lead to a precise test of CPT symmetry, a fundamental symmetry within the standard model of particle physics, by comparing the proton’s and the antiproton’s g-factor with fast detection and single spin-flip resolution. It thus has the potential to reach inaccuracies below 10-9, exceeding the state-of-the-art for the antiproton g-factor by six orders of magnitude. Such a measurement is urgently needed to complement ongoing tests with electrons and positrons. It is closely intertwined with our desire to understand the observed matter-antimatter imbalance in the universe and to obtain a unified description of matter and interactions. Further, the project will considerably broaden the arsenal of quantum state manipulation techniques in Penning traps and possibly impact high precision mass measurement.'