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polarization shaping of poincare´ beams by polariton oscillations

Light(Science & Applications) 2015年第1期4卷 122-128页

作者： David Colas Lorenzo Dominici Stefano Donati Anastasiia A pervishko Timothy CH Liew Ivan A Shelykh Dario Ballarini Milena de Giorgi Alberto Bramati Giuseppe Gigli Elena del Valle fabrice p.laussy Alexey V Kavokin Daniele Sanvitto Departamento de Fı´sica Teorica de la Materia Condensada and Condensed Matter physics Center(IFIMAC) Universidad Autonoma de MadridE-28049Spain NANOTEC Istituto di Nanotecnologia-CNRVia Arnesano73100 LecceItaly Istituto Italiano di Tecnologia IIT-LecceVia Barsanti73010 LecceItaly Universita del Salento Via Arnesano73100 LecceItaly Division of physics and Applied physics Nanyang Technological University637371 SingaporeSingapore Science Institute University of IcelandDunhagi 3IS-107ReykjavikIceland Laboratory of Light-Matter Coupling in Nanostructures ITMO University197101 St.PetersburgRussia Laboratoire Kastler Brossel UPMC-Paris 6ENS et CNRS75005 ParisFrance Russian Quantum Center Novaya 100143025 SkolkovoMoscow RegionRussia CNR-SpIN Tor Vergataviale del Politechnico 1I-00133 RomeItaly

We propose theoretically and demonstrate experimentally the generation of light pulses whose polarization varies temporally to cover selected areas of the poincare´sphere with both tunable swirling speed and total duration(1 ps and 10 ps,respectively,in our implementation).The effect relies on the Rabi oscillations of two polariton polarized fields excited by two counter-polarized and delayed *** superposition of the oscillating fields result in the precession of the Stokes vector of the emitted light while polariton lifetime imbalance results in its drift from a circle of controllable radius on the poincare´sphere to a single point at long *** positioning of the initial circle and final point allows to engineer the type of polarization spanning,including a full sweeping of the poincare´*** universality and simplicity of the scheme should allow for the deployment of time-varying full-poincare´polarization fields in a variety of platforms,timescales,and regimes.

关键词： full poincare beams polaritons polarization pulse shaping Rabi oscillations

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Quantum hydrodynamics of a single particle

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Light(Science & Applications) 2020年第1期9卷 1199-1205页

作者： Daniel Gustavo Suarez-Forero Vincenzo Ardizzone Saimon Filipe Covre da Silva Marcus Reindl Antonio Fieramosca Laura polimeno Milena De Giorgi Lorenzo Dominici Loren N.pfeiffer Giuseppe Gigli Dario Ballarini fabrice laussy Armando Rastelli Daniele Sanvitto CNR NANOTEC Institute of NanotechnologyCampus EcotekneVia Monteroni73100 LecceItaly Dipartimento di Ingegneria dell’Innovazione Universita del SalentoCampus Ecoteknevia Monteroni73100 LecceItaly Institute of Semiconductor and Solid State physics Johannes Kepler UniversityAltenbergerstr.69Linz 4040Austria Dipartimento di Matematica e Fisica E.De Giorgi Universita del SalentoCampus Ecoteknevia MonteroniLecce 73100Italy pRISM Princeton Institute for the Science and Technology of MaterialsPrinceton UniversityPrincetonNJ 08540USA Faculty of Science and Engineering University of WolverhamptonWulfruna StreetWolverhampton WV11LYUK Russian Quantum Center Novaya 100143025 SkolkovoMoscow RegionRussia

Semiconductor devices are strong competitors in the race for the development of quantum computational *** this work,we interface two semiconductor building blocks of different dimensionalities with complementary properties:(1)a quantum dot hosting a single exciton and acting as a nearly ideal single-photon emitter and(2)a quantum well in a 2D microcavity sustaining polaritons,which are known for their strong interactions and unique hydrodynamic properties,including ultrafast real-time monitoring of their propagation and phase *** the present experiment,we can thus observe how the injected single particles propagate and evolve inside the microcavity,giving rise to hydrodynamic features typical of macroscopic systems despite their genuine intrinsic quantum *** the presence of a structural defect,we observe the celebrated quantum interference of a single particle that produces fringes reminiscent of wave *** this behavior could be theoretically expected,our imaging of such an interference pattern,together with a measurement of antibunching,constitutes the first demonstration of spatial mapping of the self-interference of a single quantum particle impinging on an obstacle.

关键词： quantum particle hydrodynamic

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