Rabi Flopping in a Two-Level System with a Time-Dependent Energy Renormalization: Intersubband Transitions in Quantum Wells

Adriano A. Batista and D. S. Citrin
Phys. Rev. Lett. 92, 127404 – Published 25 March 2004

Abstract

We obtain pulse-driven Rabi oscillations guided by a generalization of the rotating-wave approximation to include, in the optical-Bloch equations, two-level systems with a time-varying transition energy. We achieve this by using chirped pulses with the central frequency given by the time-varying transition energy. Using this approach, we predict Rabi oscillations in intersubband transitions in a two-subband n-type modulation-doped quantum well by taking into account the time-dependent intersubband energy-gap renormalization due to depolarization-shift effects. We obtain Rabi oscillations for jπ (j=0,1,2,) pulses in the presence of dephasing.

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  • Received 1 August 2003

DOI:https://doi.org/10.1103/PhysRevLett.92.127404

©2004 American Physical Society

Authors & Affiliations

Adriano A. Batista* and D. S. Citrin

  • School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0250, USA

  • *Present address: Instituto de Física, Universidade de Brasília, CEP: 70919-970, Brasília-DF, Brazil.

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Vol. 92, Iss. 12 — 26 March 2004

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