Resonant Regimes in the Fock-Space Coherence of Multilevel Quantum dots

Details Resonant Regimes in the Fock-Space Coherence of Multilevel Quantum dots Resonant Regimes in the Fock-Space Coherence of Multilevel Quantum dots

2011-05-26

arxiv.org/abs/1105.5354v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 4 figures

Scientific paper

The coherence between quantum states with different particle numbers --- the Fock-space coherence --- qualitatively differs from the more common Hilbert-space coherence between states with equal particle numbers. For a quantum dot with multiple channels available for transport, we find the conditions for decoupling the dynamics of the Fock-space coherence from both the Hilbert-space coherence as well as the population dynamics. We further find specific energy and coupling regimes where a long-lived resonance in the Fock-space coherence of the system is realized, even where no resonances are found either in the populations or Hilbert-space coherence. The resonance remains robust in the presence of both boson-mediated relaxation and transport through the quantum dot.

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