Coherent properties and rabi oscillations in two-level donor systems

Latgé, A.; Ribeiro, F. J.; Bruno-Alfonso, Alexys; Oliveira, L. E.; Brandi, H. S.

doi:10.1590/s0103-97332006000300050

Cited by 2 publications

(3 citation statements)

References 8 publications

(16 reference statements)

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“…On a fundamental level, RO damping may be seen to originate from self-interference of a wavepacket that is facilitated by interference between small fractions of wavefunction that a wavepacket constantly emits through intrawell and Bloch oscillations (we will call them 'ripples'). A wavepacket initially set in the ground miniband of a biased SL, starts to leak out into the second miniband, since the interference (11) given equation (8). Solid and broken lines show the cases when P 1 = 0.5 and 0.6 at resonance (ideal and nearly ideal cases), respectively.…”

Section: Ro Damping and Quantum Interferencementioning

confidence: 99%

“…Studies focused on coherent carrier dynamics have revealed some dynamical features of great interest (see, for example [8], and references therein) arising from the interplay between interminiband oscillations and tunnelling to the continuum. These studies contribute to understanding of the famous quantum-mechanical problem of tunnelling in presence of dissipation [9][10][11] that has been considered for superlattices in [12].…”

Section: Introductionmentioning

confidence: 99%

“…Figure11. Ratio of interminiband tunnelling rates γ 12 /γ 23 versus inverse bias (in resonance HWHM units), from equation(11) given equation(8). Solid and broken lines show the cases when P 1 = 0.5 and 0.6 at resonance (ideal and nearly ideal cases), respectively.…”

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confidence: 99%

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Resonant carrier dynamics in strongly biased superlattices

Abumov

Sprung

2009

J. Phys.: Condens. Matter

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We study coherent electron dynamics in a biased undriven ideal semiconductor superlattice coupled to the continuum, near energy level anticrossings. In particular, we examine the dependence of wavepacket dynamical characteristics on electric field detuning, and investigate mixed regimes involving a superposition of energy level anticrossings showing both Rabi oscillations and resonant tunnelling. In earlier work (Abumov and Sprung 2007 Phys. Rev. B 75 165421), Rabi and Zener resonances were shown to have a common origin, and a criterion for the occurrence of either was proposed. The present results allow a better understanding of the nature of an interminiband resonance, which can be useful in the areas of microwave radiation generation and matter manipulation on the particle level, as well as demonstrating an alternative approach to examining electron level structure of a finite superlattice.

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Section: Ro Damping and Quantum Interferencementioning

confidence: 99%