SEMICONDUCTOR PHYSICS

Properties of the two- and three-dimensional quantum dot qubit

Chen Shihua

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Abstract: On the condition of electric-longitudinal-optical (LO) phonon strong coupling in both two- and three-dimensional parabolic quantum dots (QDs), we obtain the eigenenergies of the ground state (GS) and the first excited state (ES), the eigenfunctions of the GS and the first ES by using a variational method of Pekar type. This system in QD may be employed as a quantum system–quantum bit (qubit). When the electron is in the superposition state of the GS and the first ES, we obtain the time evolution of the electron density. The relations of both the electron probability density and the period of oscillation with the electric-LO phonon coupling strength and confinement length are discussed.

Key words: quantum dot qubit strong coupling

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    Received: 18 August 2015 Revised: 06 January 2010 Online: Published: 01 May 2010

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      Chen Shihua. Properties of the two- and three-dimensional quantum dot qubit[J]. Journal of Semiconductors, 2010, 31(5): 052001. doi: 10.1088/1674-4926/31/5/052001 Chen S H. Properties of the two- and three-dimensional quantum dot qubit[J]. J. Semicond., 2010, 31(5): 052001. doi: 10.1088/1674-4926/31/5/052001.Export: BibTex EndNote
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      Chen Shihua. Properties of the two- and three-dimensional quantum dot qubit[J]. Journal of Semiconductors, 2010, 31(5): 052001. doi: 10.1088/1674-4926/31/5/052001

      Chen S H. Properties of the two- and three-dimensional quantum dot qubit[J]. J. Semicond., 2010, 31(5): 052001. doi: 10.1088/1674-4926/31/5/052001.
      Export: BibTex EndNote

      Properties of the two- and three-dimensional quantum dot qubit

      doi: 10.1088/1674-4926/31/5/052001
      • Received Date: 2015-08-18
      • Accepted Date: 2009-10-15
      • Revised Date: 2010-01-06
      • Published Date: 2010-05-06

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