Nonlinear dynamics in far-infrared driven quantum-well intersubband transitions

Batista, Adriano A.; Tamborenea, P. I.; Birnir, Björn; Sherwin, Mark S.; Citrin, D. S.

doi:10.1103/physrevb.66.195325

Cited by 37 publications

(21 citation statements)

References 29 publications

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“…In related experiments, intersubband transitions in intense laser fields have been studied experimentally [5][6][7][8] and theoretically. [9][10][11][12][13][14] In theoretical works, the effects of electron-electron interactions have been included mainly in the Hartree approximation by, e.g., Zaluzny 10 and Birnir and Galdrikian. 13 The effect of the exchange and correlations were studied using semiconductor Bloch equations ͑SBE's͒͑ exchange only͒ 11,12,14,15 and the time-dependent density functional approach.…”

Section: Introductionmentioning

confidence: 99%

“…[9][10][11][12][13][14] In theoretical works, the effects of electron-electron interactions have been included mainly in the Hartree approximation by, e.g., Zaluzny 10 and Birnir and Galdrikian. 13 The effect of the exchange and correlations were studied using semiconductor Bloch equations ͑SBE's͒͑ exchange only͒ 11,12,14,15 and the time-dependent density functional approach. 16 The effects of electron-electron correlations in quantum dots in intense laser field have also been studied using exact diagonalization techniques.…”

Section: Introductionmentioning

confidence: 99%

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Effective Bloch equations for strongly driven modulation-doped quantum wells

et al. 2003

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Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Effective Bloch equations for strongly driven modulation doped quantum wells Olaya-Castro, A.; Korkusinski, Marek; Hawrylak, Pawel; Ivanov, Mikhail http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=fr L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D'UTILISER CE SITE WEB. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=12328637&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=12328637&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1103/PhysRevB.68.155305Physical Review B, 68, 15, p. 155305, 2003 Effective Bloch equations for strongly driven modulation-doped quantum wells We study the effects of macroscopic carrier density on intersubband transitions in a modulation-doped quantum well with two electronic subbands coupled by an intense ac electric field.We propose an ansatz wave function consistent with the Hartree-Fock approximation, and we use it to derive and analyze the effective nonlinear Bloch equations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effective Bloch equations for strongly driven modulation-doped quantum wells

et al. 2003

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“…For semiconductor heterostructures, the nonlinearity of inter-subband absorption was predicted and studied since late 80s [28][29][30][31][32][33] and absorption bistability has been long sought. [34][35][36][37] In this work, we present theoretical and experimental studies of nonlinear absorption effects for a strongly correlated electron system on liquid helium surface. A short account of the results appeared earlier.…”

Section: -14mentioning

confidence: 99%

Bistability and hysteresis of intersubband absorption in strongly interacting electrons on liquid helium

Konstantinov

Dykman²,

Lea

et al. 2012

Phys. Rev. B

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We study nonlinear inter-subband microwave absorption of electrons bound to the liquid helium surface. Already for a comparatively low radiation intensity, resonant absorption due to transitions between the two lowest subbands is accompanied by electron overheating. The overheating results in a significant population of higher subbands. The Coulomb interaction between electrons causes a shift of the resonant frequency, which depends on the population of the excited states and thus on the electron temperature Te. The latter is determined experimentally from the electron photoconductivity. The experimentally established relationship between the frequency shift and Te is in reasonable agreement with the theory. The dependence of the shift on the radiation intensity introduces nonlinearity into the rate of the inter-subband absorption resulting in bistability and hysteresis of the resonant response. The hysteresis of the response explains the behavior in the regime of frequency modulation, which we observe for electrons on liquid 3 He and which was previously seen for electrons on liquid 4 He.

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“…Most previous theoretical studies of nonlinear ISB dynamics were based on the semiconductor Bloch equations (SBE) in Hartree [11]- [13] or exchange-only [14]- [16] approximation. These studies showed that the collective ISB electron dynamics is strongly influenced by depolarization and exchange-correlation (xc) manybody effects.…”

mentioning

confidence: 99%

“…The present study deals with a popular simplification of the ISB SBE: the 2-level rotating-wave approximation (RWA) [11]- [13], which was used by Za użny [11] to derive analytical expressions for nonlinear ISB photoabsorption. The 2-level RWA works well for symmetric quantum wells, but we will demonstrate numerically that it breaks down when the system becomes asymmetric under the influence of DC electric fields.…”

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confidence: 99%

Nonlinear Intersubband Photoabsorption in Asymmetric Single Quantum Wells

Wijewardane¹,

Ullrich²

2005

AIP Conference Proceedings

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Abstract.A density-matrix approach combined with time-dependent density-functional theory is used to calculate the intersubband photoabsorption in a strongly driven, DC-biased GaAs/AlGaAs single quantum well. For certain frequencies and intensities of the driving field, optical bistability is observed. Compared to a full time propagation of the density matrix, the commonly used two-level rotating wave approximation becomes less and less accurate for increasing asymmetry.Intersubband (ISB) transitions in semiconductor quantum wells take place on a meV energy scale and are therefore attractive for THz device applications [1]. Nonlinear ISB dynamics has attracted particular attention, and many interesting effects have been studied: secondand third-harmonic generation [2], intensity-dependent saturation of photoabsorption [3,4], directional control over photocurrents [5], generation of ultrashort THz pulses [6], plasma instability [7], or optical bistability [8,9]. Inspired by the photoabsorption experiments by Craig et al.[4], we have recently performed a theoretical study of the optical bistability region in a strongly driven, modulation n-doped GaAs/Al 0 3 Ga 0 7 As quantum well [10]. We have demonstrated that ISB bistability can be manipulated on a picosecond time scale by short THz control pulses. This opens up new opportunities for experimental study of optical bistability, which in the long run may lead to new THz applications such as high-speed all-optical modulators and switches.Most previous theoretical studies of nonlinear ISB dynamics were based on the semiconductor Bloch equations (SBE) in or exchange-only [14]- [16] approximation. These studies showed that the collective ISB electron dynamics is strongly influenced by depolarization and exchange-correlation (xc) manybody effects. We account for these effects using timedependent density-functional theory, which has the advantage of formal and computational simplicity.The present study deals with a popular simplification of the ISB SBE: the 2-level rotating-wave approximation (RWA) [11]-[13], which was used by Za użny [11] to derive analytical expressions for nonlinear ISB photoabsorption. The 2-level RWA works well for symmetric quantum wells, but we will demonstrate numerically that it breaks down when the system becomes asymmetric under the influence of DC electric fields.

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Nonlinear dynamics in far-infrared driven quantum-well intersubband transitions

Cited by 37 publications

References 29 publications

Effective Bloch equations for strongly driven modulation-doped quantum wells

Effective Bloch equations for strongly driven modulation-doped quantum wells

Bistability and hysteresis of intersubband absorption in strongly interacting electrons on liquid helium

Nonlinear Intersubband Photoabsorption in Asymmetric Single Quantum Wells

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