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首页> 外文期刊>Physica, B. Condensed Matter >Non-extensive entropy and properties of polaron in RbCl delta quantum dot under an applied electric field and Coulombic impurity
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Non-extensive entropy and properties of polaron in RbCl delta quantum dot under an applied electric field and Coulombic impurity

机译：在应用的电场和库仑杂质下RBCL DELTA量子点中的非广泛熵和性能

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Bound polaron in RbCl delta quantum dot under electric field and Coulombic impurity were considered. The ground and first excited state energy were derived by employing Pekar variational and unitary transformation methods. Applying Fermi golden rule, the expression of temperature and polaron lifetime were derived. The decoherence was studied trough the Tsallis entropy. Results shows that decreasing (or increasing) the lifetime increases (or decreases) the temperature and delta parameter (electric field strength and hydrogenic impurity). This suggests that to accelerate quantum transition in nanostructure, temperature and delta have to be enhanced. The improvement of electric field and coulomb parameter, increases the lifetime of the delta quantum dot qubit. Energy spectrum of polaron increases with increase in temperature, electric field strength, Coulomb parameter, delta parameter, and polaronic radius. The control of the delta quantum dot energies can be done via the electric field, coulomb impurity, and delta parameter. Results also show that the non-extensive entropy is an oscillatory function of time. With the enhancement of delta parameter, non-extensive parameter, Coulombic parameter, and electric field strength, the entropy has a sinusoidal increase behavior with time. With the study of decoherence through the Tsallis entropy, it may be advised that to have a quantum system with efficient transmission of information, the non-extensive and delta parameters need to be significant. The study of the probability density showed an increase from the boundary to the center of the dot where it has its maximum value and oscillates with period T-0 =h/Delta Ewith the tunneling of the delta parameter, electric field strength, and Coulombic parameter. The results may be very helpful in the transmission of information in nanostructures and control of decoherence
机译：考虑了在电场和库仑杂质下RBCL Delta量子点中的结合极化焦焦。通过采用PEKAR变分和整体变换方法来得出地面和第一激发状态能。应用费米黄金法则，推导出温度和极化寿命的表达。研究了Tsallis熵的破坏。结果表明，降低（或增加）寿命增加（或降低）温度和δ参数（电场强度和氢杂质）。这表明必须增强纳米结构，温度和δ在纳米结构中的量子过渡。电场和库仑参数的改进增加了Delta量子点Qubit的寿命。极化的能谱随着温度，电场强度，库仑参数，三角形参数和极性半径的增加而增加。可以通过电场，库仑杂质和DELTA参数来完成Δ量子点能的控制。结果还表明，非广泛的熵是时间的振荡函数。随着增强Δ参数，非广泛参数，库仑参数和电场强度的增强，熵具有与时间的正弦增加行为。随着通过TSAllis熵的转移的研究，可以建议具有具有有效传输信息的量子系统，非广泛和三角洲参数需要很大。概率密度的研究显示从边界增加到点的中心，其中它具有其最大值和振荡的时间t-0 = h / delta ewith the Delta参数，电场强度和库仑参数的隧道。结果在纳米结构和控制的控制中的信息中的传输非常有用

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