ORCID Profile
0000-0002-0201-281X
Current Organisations
University of Oklahoma
,
University of Colorado at Boulder
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Publisher: American Physical Society (APS)
Date: 20-05-2015
Publisher: American Physical Society (APS)
Date: 03-11-2020
Publisher: American Physical Society (APS)
Date: 18-10-2021
Publisher: American Physical Society (APS)
Date: 20-11-2020
Publisher: Informa UK Limited
Date: 09-2010
Publisher: American Physical Society (APS)
Date: 16-05-2023
Publisher: American Physical Society (APS)
Date: 28-06-2016
Publisher: American Physical Society (APS)
Date: 10-12-2020
Publisher: American Physical Society (APS)
Date: 11-04-2017
Publisher: American Physical Society (APS)
Date: 21-04-2020
Publisher: American Physical Society (APS)
Date: 14-05-2019
Publisher: American Physical Society (APS)
Date: 27-04-2021
Publisher: American Physical Society (APS)
Date: 25-06-2013
Publisher: American Physical Society (APS)
Date: 25-02-2022
Publisher: American Physical Society (APS)
Date: 05-11-2019
Publisher: Springer Science and Business Media LLC
Date: 28-08-2019
Publisher: American Physical Society (APS)
Date: 16-08-2018
Publisher: American Association for the Advancement of Science (AAAS)
Date: 20-07-2018
Abstract: Ensembles of atoms have emerged as powerful simulators of many-body dynamics. Engineering controllable interactions between the atoms is crucial, be it direct or through a mediator. Norcia et al. developed a flexible alternative to existing atomic simulators in a system consisting of strontium atoms placed in an optical cavity. Two atomic states connected by a clock transition each served as an effective spin, with long-range spin-exchange interactions mediated by the cavity photons. With improvements, the setup is expected to be amenable to simulating nonequilibrium quantum dynamics and to have applications in metrology. Science , this issue p. 259
Publisher: American Physical Society (APS)
Date: 04-06-2021
Publisher: American Physical Society (APS)
Date: 30-08-2021
Publisher: IOP Publishing
Date: 29-05-2018
Publisher: American Physical Society (APS)
Date: 12-05-2020
Publisher: American Physical Society (APS)
Date: 14-06-2017
Publisher: American Physical Society (APS)
Date: 27-07-2018
Publisher: Springer Science and Business Media LLC
Date: 23-01-2023
Publisher: IOP Publishing
Date: 05-12-2018
Publisher: Springer Science and Business Media LLC
Date: 23-04-2014
DOI: 10.1038/NCOMMS4752
Abstract: The Hong-Ou-Mandel effect is a demonstration of destructive quantum interference between pairs of indistinguishable bosons, realised so far only with massless photons. Here we propose an experiment to realize this effect in the matter-wave regime using pair-correlated atoms produced via a collision of two Bose-Einstein condensates and subjected to two laser--induced Bragg pulses. We formulate a measurement protocol for the multimode matter-wave field, which--unlike the typical two-mode optical case-bypasses the need for repeated measurements under different displacement settings of the beam splitter, markedly reducing the number of experimental runs required to map out the interference visibility. Although the protocol can be used in related matter-wave schemes, we focus on condensate collisions. By simulating the entire experiment, we predict a Hong-Ou-Mandel dip visibility of ~69%. This visibility highlights strong quantum correlations between the atoms, paving the way for a possible demonstration of a Bell inequality violation with massive particles in a related Rarity-Tapster setup.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 06-08-2021
Abstract: Harnessing quantum mechanical effects is expected to provide an advantage over classical sensing technology. By entangling the center-of-mass motional state of approximately 150 ions trapped in a two-dimensional Coulomb crystal with their collective spin state, Gilmore et al . demonstrate a quantum-enhanced measurement sensitivity of displacement and electric field. Such enhanced sensitivity could, for instance, find application in probing proposed weak interactions between dark matter and normal matter, as well as enhancing gravitational wave detection. —ISO
Publisher: Springer Science and Business Media LLC
Date: 29-04-2020
Publisher: Springer International Publishing
Date: 2016
Publisher: Springer Science and Business Media LLC
Date: 05-04-2019
DOI: 10.1038/S41467-019-09436-Y
Abstract: Scrambling is the process by which information stored in local degrees of freedom spreads over the many-body degrees of freedom of a quantum system, becoming inaccessible to local probes and apparently lost. Scrambling and entanglement can reconcile seemingly unrelated behaviors including thermalization of isolated quantum systems and information loss in black holes. Here, we demonstrate that fidelity out-of-time-order correlators (FOTOCs) can elucidate connections between scrambling, entanglement, ergodicity and quantum chaos (butterfly effect). We compute FOTOCs for the paradigmatic Dicke model, and show they can measure subsystem Rényi entropies and inform about quantum thermalization. Moreover, we illustrate why FOTOCs give access to a simple relation between quantum and classical Lyapunov exponents in a chaotic system without finite-size effects. Our results open a path to experimental use FOTOCs to explore scrambling, bounds on quantum information processing and investigation of black hole analogs in controllable quantum systems.
Publisher: American Physical Society (APS)
Date: 09-09-2016
Publisher: American Physical Society (APS)
Date: 15-03-2023
No related grants have been discovered for Robert Lewis-Swan.