Measuring geometric phases with a dynamical quantum Zeno effect in a Bose-Einstein condensate
Anno: 2019
Autori: Do H. V., Gessner M., Cataliotti F.S., Smerzi A.
Affiliazione autori: Univ Florence, European Lab Nonlinear Spect, Via N Carrara 1, I-50019 Sesto Firenze, Italy; QSTAR, Largo Enrico Fermi 2, I-50125 Florence, Italy; CNR INO, Largo Enrico Fermi 2, I-50125 Florence, Italy; PSL Univ, Dept Phys, Ecole Normale Super, CNRS, 24 Rue Lhomond, F-75005 Paris, France; Sorbonne Univ, Coll France, Lab Kastler Brossel, ENS PSL,CNRS, 24 Rue Lhomond, F-75005 Paris, France; Univ Florence, Dept Phys & Astron, Via G Sansone 1, I-50019 Sesto Fiorentino, Italy.
Abstract: A closed-trajectory evolution of a quantum state generally imprints a phase that contains both dynamical and geometrical contributions. While dynamical phases depend on the reference system, geometric phase factors are uniquely defined by the properties of the outlined trajectory. Here we generate and measure geometric phases in a Bose-Einstein condensate of 87Rb using a combination of the dynamical quantum Zeno effect and measurementfree evolution. We show that the dynamical quantum Zeno effect can inhibit the formation of a geometric phase without altering the dynamical phase. This can be used to extract the geometric Aharonov-Anandan phase from any closed-trajectory evolution without requiring knowledge or control of the Hamiltonian.
Giornale/Rivista: PHYSICAL REVIEW RESEARCH
Volume: 1 (3) Da Pagina: 33028-1 A: 33028-7
Parole chiavi: Berrys Phase, Quantum Zeno effect, Atom Chips, Geometrical PhaseDOI: 10.1103/PhysRevResearch.1.033028Citazioni: 5dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-04Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui
