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Lee, S. G.; Harten, P. A.; Sokoloff, J. P.; Jin, R.; Fluegel, B.; Meissner, Kenith E.; Chuang, C. L.; Binder, R.; Koch, S. W.; Khitrova, G.; Gibbs, H. M.; Peyghambarian, N.; Polky, J. N.; Pubanz, G. A.

doi:10.1103/physrevb.43.1719

Cited by 20 publications

(6 citation statements)

References 22 publications

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“…This well-known pump-andprobe methodology is elaborated long ago and commonly used to observe quantum optics effects -particularly, modifications of energy spectrum of dressed electrons arisen from the optical Stark effect -in semiconductor structures (see, e.g., Refs. [36][37][38]. Within this approach, giant dressing fields (up to GW/cm 2 ) can be applied to semiconductor structures.…”

Section: Resultsmentioning

confidence: 99%

Aharonov-Bohm effect for excitons in a semiconductor quantum ring dressed by circularly polarized light

Sigurðsson

Shelykh

2015

Phys. Rev. B

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We show theoretically that the strong coupling of circularly polarized photons to an exciton in ring-like semiconductor nanostructures results in physical nonequivalence of clockwise and counterclockwise exciton rotations in the ring. As a consequence, the stationary energy splitting of exciton states corresponding to these mutually opposite rotations appears. This excitonic Aharonov-Bohm effect depends on the intensity and frequency of the circularly polarized field and can be detected in state-of-the-art optical experiments.

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Section: Resultsmentioning

confidence: 99%

Aharonov-Bohm effect for excitons in a semiconductor quantum ring dressed by circularly polarized light

Sigurðsson

Shelykh

2015

Phys. Rev. B

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“…To avoid the melting with the strong field, it is reasonable to use narrow pulses of a circularly polarized field which open band gaps and narrow pulses of a weak probing field which detect the gaps. This pump-and-probe methodology has been elaborated long ago and is commonly used to observe various effects induced by strong fields -particularly, modifications of electron energy spectrum arisen from the optical Stark effect -in semiconductor structures [35][36][37] . Since giant field intensities (up to GW/cm 2 ) can be applied to semiconductor structures within this approach, the wide band gaps can be opened with the pulsing fields.…”

Section: Discussionmentioning

confidence: 99%

Optically controlled periodical chain of quantum rings

2016

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We demonstrated theoretically that a circularly polarized electromagnetic field substantially modifies electronic properties of a periodical chain of quantum rings. Particularly, the field opens band gaps in the electron energy spectrum of the chain, generates edge electron currents and induces the Fano-like features in the electron transport through the finite chain. These effects create physical prerequisites for the development of optically controlled nanodevices based on a set of coupled quantum rings.

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“…The phenomenological polarization dephasing time, z = 200 fs, is an approximate average over the dephasing times of the different excitations A. This approximation has provided good agreement between experiment and theory in the case of the optical Stark effect [12]. Due to the extremely short pulses used here we neglect the decay of the excitation densities n,.…”

Section: Theorymentioning

confidence: 94%

Coherent Pulse Breakup in Femtosecond Pulse Propagation in Semiconductors

Peyghambarian

Harten

Knorr

et al. 1992

Physica Status Solidi (b)

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Coherent pulse breakup is observed for below-exciton resonance femtosecond excitation in a room-temperature GaAs/AlGaAs multiple quantum well waveguide using the cross-correlation technique. This pulse breakup is present only for large area pulses with durations less than the dephasing time of the closest exciton. For pulses longer than the exciton dephasing times, but with the same and even larger areas, the pulse breakup is not observed. The breakup is due to neither self-induced transparency nor temperoral soliton. Instead, calculations based on the coupled semiconductor Maxwell-Bloch equations show that coherent self-phase modulation during propragation drives the system out of the initial adiabatic following regime into oscillatory excitation density, and eventually, pulse shape modulations.') Tucson, AZ 85721, USA. ')

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Femtosecond excitonic bleaching recovery in the optical Stark effect of GaAs/AlxGa1

Cited by 20 publications

References 22 publications

Aharonov-Bohm effect for excitons in a semiconductor quantum ring dressed by circularly polarized light

Aharonov-Bohm effect for excitons in a semiconductor quantum ring dressed by circularly polarized light

Optically controlled periodical chain of quantum rings

Coherent Pulse Breakup in Femtosecond Pulse Propagation in Semiconductors

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