Opin vísindi

Fletta eftir höfundi "Sigurdsson, Helgi"

Fletta eftir höfundi "Sigurdsson, Helgi"

Röðun: Raða: Niðurstöður:

  • Icon
    Amplification of nonlinear polariton pulses in waveguides 
    Tapia Rodriguez, Lucy E.; Walker, Paul M.; Sigurdsson, Helgi; Royall, Ben; Farrer, Ian; Ritchie, David A.; Yulin, Alexey V.; Shelykh, Ivan; Skolnick, Maurice S.; Krizhanovskii, Dmitry N. (The Optical Society, 2019-04-03)
    Using a sub-millimeter exciton-polariton waveguide suitable for integrated photonics, we experimentally demonstrate nonlinear modulation of pico-Joule pulses at the same time as amplification sufficient to compensate the system losses. By comparison ...
  • Icon
    Spin Domains in One-Dimensional Conservative Polariton Solitons 
    Sich, Maksym; Tapia-Rodriguez, Lucy E.; Sigurdsson, Helgi; Walker, Paul M.; Clarke, Edmund; Shelykh, Ivan; Royall, Benjamin; Sedov, Evgeny S.; Kavokin, Alexey V.; Skryabin, Dmitry V.; Skolnick, Maurice S.; Krizhanovskii, Dmitry N. (American Chemical Society (ACS), 2018-11-12)
    We report stable orthogonally polarized domains in high-density polariton solitons propagating in a semiconductor microcavity wire. This effect arises from spin-dependent polariton–polariton interactions and pump-induced imbalance of polariton spin ...
  • Icon
    Transition from Propagating Polariton Solitons to a Standing Wave Condensate Induced by Interactions 
    Sich, M.; Chana, J. K.; Egorov, O. A.; Sigurdsson, Helgi; Shelykh, Ivan; Skryabin, D. V.; Walker, P. M.; Clarke, E.; Royall, B.; Skolnick, M. S.; Krizhanovskii, D. N. (American Physical Society (APS), 2018-04-19)
    We explore phase transitions of polariton wave packets, first, to a soliton and then to a standing wave polariton condensate in a multimode microwire system, mediated by nonlinear polariton interactions. At low excitation density, we observe ballistic ...