Polarization shaping of Poincare´ beams by polariton oscillations  

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 

机构地区：[1]Departamento de Fı´sica Teorica de la Materia Condensada and Condensed Matter Physics Center(IFIMAC),Universidad Autonoma de Madrid,E-28049,Spain [2]NANOTEC,Istituto di Nanotecnologia-CNR,Via Arnesano,73100 Lecce,Italy [3]Istituto Italiano di Tecnologia,IIT-Lecce,Via Barsanti,73010 Lecce,Italy [4]Universita del Salento,Via Arnesano,73100 Lecce,Italy [5]Division of Physics and Applied Physics,Nanyang Technological University,637371 Singapore,Singapore [6]Science Institute,University of Iceland,Dunhagi 3,IS-107,Reykjavik,Iceland [7]Laboratory of Light-Matter Coupling in Nanostructures,ITMO University,197101 St.Petersburg,Russia [8]Laboratoire Kastler Brossel,UPMC-Paris 6,ENS et CNRS,75005 Paris,France [9]Russian Quantum Center,Novaya 100,143025 Skolkovo,Moscow Region,Russia [10]CNR-SPIN,Tor Vergata,viale del Politechnico 1,I-00133 Rome,Italy

出　　处：《Light(Science & Applications)》2015年第1期122-128,共7页光（科学与应用)（英文版）

基　　金：We acknowledge funding from the MIUR project Beyond Nano,the ERC Grant POLAFLOW(308136);the IEF project SQUIRREL(623708)and the support from IRSES project POLAPHEN.

摘　　要：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 pulses.The 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 times.The positioning of the initial circle and final point allows to engineer the type of polarization spanning,including a full sweeping of the Poincare´sphere.The 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 

分 类 号：O17[理学—数学]