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Weak measurement based feedback control of atomic ensembles (Orale)

hal.structure.identifierlp2n-02,lp2n-11
dc.contributor.authorBERTOLDI, Andrea
hal.structure.identifierSystèmes de Référence Temps Espace [SYRTE]
hal.structure.identifierLaboratoire Charles Fabry / Optique atomique
dc.contributor.authorKOHLHAAS, Ralf
hal.structure.identifierlp2n-02,lp2n-11
dc.contributor.authorCANTIN, Etienne
hal.structure.identifierLaboratoire national de métrologie et d'essais - Systèmes de Référence Temps-Espace [LNE - SYRTE]
dc.contributor.authorLANDRAGIN, Arnaud
hal.structure.identifierLaboratoire Charles Fabry / Optique atomique
dc.contributor.authorBOUYER, Philippe
dc.date.accessioned2023-05-12T10:19:24Z
dc.date.available2023-05-12T10:19:24Z
dc.date.created2013-09-25
dc.date.conference2013-09-23
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/181036
dc.description.abstractEnAtom interferometry based sensors provide today the most precise measurements of time, inertial forces and magnetic fields. In the common approach, a superposition state is interrogated for a given time interval and finally destructively measured. Conversely, we can repeatedly probe non-destructively the same quantum system and demonstrate efficient measurement schemes using feedback. First, we protect a spin polarized atomic ensemble from the decoherence induced by a synthetic noise. After the noise action, the state of the atomic system is read out with negligible projection using a non-destructive probe, and later corrected with a coherent manipulation to restore the initial state. The efficiency of the feedback scheme is studied versus the strength of the measurement and a maximum is found from the trade-off between information gain and probe destructivity. Our feedback controller is then applied to stabilize a classical local oscillator on a collective quantum state, and this is used in an atomic clock configuration to demonstrate experimentally that in some contexts a hybrid phase and frequency lock can surpass conventional atomic clocks which rely only on a frequency lock.
dc.language.isoen
dc.title.enWeak measurement based feedback control of atomic ensembles (Orale)
dc.typeCommunication dans un congrès avec actes
dc.subject.halPhysique [physics]/Physique [physics]/Physique Atomique [physics.atom-ph]
bordeaux.hal.laboratoriesLaboratoire Photonique, Numérique et Nanosciences (LP2N) - UMR 5298*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.countryFR
bordeaux.title.proceedingQMAP 2013 3rd workshop of the Sino-­French Research Network on "Quantum Manipulation of Atoms and Photons" (GDRI QMAP)
bordeaux.conference.cityPalaiseau
bordeaux.peerReviewedoui
hal.identifierhal-00995340
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00995340v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=BERTOLDI,%20Andrea&KOHLHAAS,%20Ralf&CANTIN,%20Etienne&LANDRAGIN,%20Arnaud&BOUYER,%20Philippe&rft.genre=proceeding


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