Non-Markovian suppression of charge qubit decoherence in the quantum point contact measurement

Journal of Chemical Physics

Volumn 129, Issue 22, 2008, Pages

  Lee, Ming Tsung ^a,c   Zhang, Wei Min ^a,b  

^a NATIONAL CENTER FOR THEORETICAL SCIENCES   (Taiwan)

^b NATIONAL CHENG KUNG UNIVERSITY   (Taiwan)

^c RESEARCH CENTER FOR APPLIED SCIENCES   (Taiwan)

Author keywords

[No Author keywords available]

Indexed keywords

DYNAMICS; ELECTRONS; QUANTUM CHEMISTRY; TUNNELING (EXCAVATION);

CHARGE QUBIT; CORRELATION TIME SCALES; CORRELATION TIMES; DECOHERENCE; ELECTRON FLUCTUATIONS; LORENTZIAN; MARKOVIAN; MARKOVIAN PROCESSES; MASTER EQUATIONS; NONEQUILIBRIUM THEORIES; PERTURBATION EXPANSIONS; QUANTUM POINT CONTACTS; QUBIT DECOHERENCE; QUBIT STATES; TIME SCALES; TUNNELING ELECTRONS; TUNNELING PROCESSES;

POINT CONTACTS;

EID: 57649201686     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.3036114     Document Type: Article

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34. The numerical code is programed based on the Runge-Kutta procedure including the convenient integral package to solve the integral-differential equation (the master equation). The numerical precision is kept in the error less than 1% of the amplitude of the reduced density matrix elements, which are calculated at the time scale at least two times longer than the evolution time plotted in figures. This makes sure the integration to sum overall history of the memory kernel convergent.