Temperature effect of a quantum pseudodot qubit

Considering a variational method of the Pekar type and the quantum statistics theory, the temperature effects on the probability density and the oscillating frequency of an electron-LO-phonon strongly coupling in a RbCl quantum pseudodot (QPD) are investigated. It is discovered that a qubit may be made up of a QPD two-level-system. Furthermore, when an electron locates in the superposition state of the ground and first excited states, the electron's probability density varies periodically with time and oscillates in the RbCl QPD with an independent period. The electron's probability density increases (decreases) with increasing temperature at low (high) temperature. At low (high) temperature, the oscillating frequency decreases (increases) with an increase of the temperature, the chemical potential of the two-dimensional electron gas and the zero point of the pseudoharmonic potential. The oscillating frequency is a decreasing function of the polaron radius.