Nonlinear optical spectroscopy of indirect excitons in coupled quantum wells

P. Andreakou,1 S. Cronenberger,1 D. Scalbert,1 A. Nalitov,2 N. A. Gippius,2,3 A. V. Kavokin,4,5,6 M. Nawrocki,7 J. R. Leonard,8 L. V. Butov,8 K. L. Campman,9 A. C. Gossard,9 and M. Vladimirova1 1Laboratoire Charles Coulomb, UMR 5221 CNRS/ Université de Montpellier, F-34095 Montpellier, France 2Institut Pascal, PHOTON-N2, Université Blaise Pascal, CNRS, 24 avenue des Landais, 63177 Aubière Cedex, France 3Skolkovo Institute of Science and Technology, Skolkovo, Moscow Region 143025, Russia 4Russian Quantum Center, 100, Novaya, Skolkovo, Moscow Region 143025, Russia 5School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom 6Spin Optics Laboratory, St. Petersburg State University, 1, Ulianovskaya, St. Peterbsurg 198504, Russia 7Institute of Experimental Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland 8Department of Physics, University of California at San Diego, La Jolla, California 92093-0319, USA 9Materials Department, University of California at Santa Barbara, Santa Barbara, California 93106-5050, USA (Received 3 October 2014; revised manuscript received 18 February 2015; published 30 March 2015)