Tuning the quantum tunneling and quantum information properties among the trion states in coupled quantum dots

Details Tuning the quantum tunneling and quantum information properties among the trion states in coupled quantum dots Tuning the quantum tunneling and quantum information properties among the trion states in coupled quantum dots

2008-04-29

arxiv.org/abs/0804.4513v2

Phys. Rev. A 77, 052332 (2008)

Physics

Quantum Physics

10 figures, 16pages

Scientific paper

10.1103/PhysRevA.77.052332

Quantum transition and information properties of the Coulomb coupled trion (electron-electron-hole) in the double quantum dots under the influence of the time-dependent electric field have been studied. Tuning the Hubbard interaction strength amongst the states of electron-hole complexes and the parameters of the ac field, two strikingly different kinds of approximate qubit can be constructed within the eight trion states. The similarity and difference between the electron dynamic entanglement and overlapping of the wavefunction with the Bell state have been elucidated through analyzing these two kinds of qubit.

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