Session U39: Focus Session: Emerging Research Devices and Materials for the Microelectronics Industry II

8:00 AM–11:00 AM, Thursday, March 8, 2007
Colorado Convention Center Room: 502

Sponsoring Unit: FIAP
Chair: Victoria Soghomonian, Virginia Polytechnic Institute and State University

Abstract ID: BAPS.2007.MAR.U39.5

Abstract: U39.00005 : Photon storage with ultrafast switching in coupled quantum wells

8:48 AM–9:00 AM

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  Alexander Winbow
    (University of California, San Diego)

  Aaron Hammack
    (University of California, San Diego)

  Leonid Butov
    (University of California, San Diego)

  Arthur Gossard
    (University of California, Santa Barbara)

Photon storage with ultrafast switching was implemented with indirect excitons in coupled quantum wells. The storage and release of photons was controlled by the gate voltage: a pulse of the gate voltage increased the exciton lifetime by orders of magnitude, resulting in storage of the absorbed photons in the form of indirect excitons; the pulse termination led to the emission of the stored photons. The storage time reached microseconds. The write and readout times were subnanosecond, and faster by an order of magnitude than the previously established record for optoelectronic photon storage devices.

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