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Interaction of quantum dot molecules with multi-mode radiation fields

Sadeghi, A. H ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. Publisher: 2010
  3. Abstract:
  4. In this article, the interaction of an arbitrary number of quantum dots behaving as artificial molecules with different energy levels and a multi-mode electromagnetic field is studied. We make the assumption that each quantum dot can be represented as an atom with zero kinetic energy, and that all excitonic effects except dipole-dipole interactions may be. disregarded. We use the. Jaynes-Cummings-Paul model with applications to quantum systems based on a time-dependent Hamiltonian and entangled states. We obtain a system of equations describing the interaction, and present a method to solve the equations analytically for a single mode fi,eld within the Rotating-Wave Approximation. As an example of the applicability of this approach, we solve the system of two, two-level quantum dots in a lossless cavity with two modes of electromagnetic field. We, furthermore, study the evolution of entanglement by defining and computing the concurrency
  5. Keywords:
  6. Nano-photonics ; Arbitrary number ; Artificial molecule ; Dipole dipole interactions ; Energy level ; Entangled state ; Entanglement ; Excitonic effect ; Jaynes-cummings ; Lossless ; Multimodes ; Quantum Dot ; Quantum dot molecules ; Quantum system ; Radiation field ; Rotating wave approximations ; Single mode ; System of equations ; Time-dependent Hamiltonians ; Zero kinetic energies ; Electromagnetic fields ; Electron energy levels ; Hamiltonians ; Molecules ; Nanotechnology ; Photons ; Quantum optics ; Semiconductor quantum dots ; Wave equations ; Quantum entanglement ; Computer simulation ; Electromagnetic field ; Kinetic energy
  7. Source: Scientia Iranica ; Volume 17, Issue 1 D , 2010 , Pages 59-70 ; 10263098 (ISSN)
  8. URL: http://www.sid.ir/en/vewssid/j_pdf/955201001d04.pdf