Wave attenuation model for dephasing and measurement of conditional times

Pramana

Colin Benjamin¹  A M Jayannavar¹ 

[1] Institute of Physics, Sachivalaya Marg, Bhubaneswar 751 005, India$$

关键词: Electron transport;    dephasing;    sojourn times;    wave attenuation.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Inelastic scattering induces dephasing in mesoscopic systems. An analysis of previous models to simulate inelastic scattering in such systems is presented and a relatively new model based on wave attenuation is introduced. The problem of Aharonov–Bohm (AB) oscillations in conductance of a mesoscopic ring is studied. We show that the conductance is symmetric under flux reversal and the visibility of AB oscillations decays to zero as a function of the incoherence parameter, signaling dephasing. Further the wave attenuation model is applied to a fundamental problem in quantum mechanics, that of the conditional (reflection/transmission) times spent in a given region of space by a quantum particle before scattering off from that region.

【 授权许可】

Unknown