Magneto-exciton-polariton condensation in a sub-wavelength high contrast grating based vertical microcavity
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We comparably investigate the diamagnetic shift of an uncoupled quantum well exciton with a microcavity exciton-polariton condensate on the same device. The sample is composed of multiple GaAs quantum wells in an AlAs microcavity, surrounded by a Bragg reflector and a sub-wavelength high contrast grating reflector. Our study introduces an independent and easily applicable technique, namely, the measurement of the condensate diamagnetic shift, which directly probes matter contributions in polariton condensates and hence discriminates it from a conventional photon laser.
Fischer , J , Brodbeck , S , Zhang , B , Wang , Z , Worschech , L , Deng , H , Kamp , M , Schneider , C & Hoefling , S 2014 , ' Magneto-exciton-polariton condensation in a sub-wavelength high contrast grating based vertical microcavity ' Applied Physics Letters , vol 104 , no. 9 , 091117 . DOI: 10.1063/1.4866776
Applied Physics Letters
© 2014 AIP Publishing LLC
This work has been supported by the State of Bavaria, the National Science Foundation of the United States (OISE 1132725), and the U.S. Air Force Office of Scientific Research (FA9550-12.1.0256).
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