منابع مشابه
An adiabatic quantum electron pump
A quantum pumping mechanism that produces dc current or voltage in response to a cyclic deformation of the confining potential in an open quantum dot is reported. The voltage produced at zero current bias is sinusoidal in the phase difference between the two ac voltages deforming the potential and shows random fluctuations in amplitude and direction with small changes in external parameters suc...
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Paraj Titum, 2 Erez Berg, Mark S. Rudner, Gil Refael, and Netanel H. Lindner Institute for Quantum Information and Matter, Caltech, Pasadena, California 91125, USA Physics Department, Technion, 320003 Haifa, Israel Department of Condensed Matter Physics, The Weizmann Institute of Science, Rehovot, 76100, Israel Niels Bohr International Academy and Center for Quantum Devices, University of Copen...
متن کاملAdiabatic quantum pump of spin-polarized current.
We propose a mechanism by which an open quantum dot driven by two ac (radio frequency) gate voltages in the presence of a moderate in-plane magnetic field generates a spin-polarized, phase-coherent dc current. The idea combines adiabatic, nonquantized (but coherent) pumping through periodically modulated external parameters and the strong fluctuations of the electron wave function existent in c...
متن کاملA molecular quantized charge pump.
A novel single electron pump based on individual molecules (a single wall carbon nanotube) is discussed in terms of the hybrid superconducting-normal conducting pumping principle. A concept demonstration device has been built based on a carbon nanotube contacted by Nb-Ti leads. Charge current quantization is achieved through rf modulation of the back gate voltage. The device is able to transfer...
متن کاملBehavioural Analysis of Charge-pump Pll’s
This paper presents a method for the numerical analysis of charge-pump Phase-Locked Loops in time domain, using behavioural modelling of non-linear elements. The time domain is divided into intervals according to zero crossing of input and VCO signals. Inside each time interval, all signals in the network can be expressed with a set of functions made of complex polynomials and complex exponenti...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2016
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.93.035312