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

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          Abstract

          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. Numerical calculations show this resonance remains robust in the presence of both boson-mediated relaxation and transport through the quantum dot.

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          Author and article information

          Journal
          26 May 2011
          2012-12-06
          Article
          10.1103/PhysRevB.86.235310
          1105.5354
          f7cd12e5-1d1a-474a-a1e2-ad02209c11ef

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          History
          Custom metadata
          E. Vaz, J. Kyriakidis, Physical Review B, volume 86, issue 23, number 235310 (2012)
          15 pages, 4 figures
          cond-mat.mes-hall quant-ph

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