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We derive self-consistent expressions of current and noise for single-electron transistors driven by time-dependent perturbations. We take into account effects of the electrical environment, higher-order co-tunneling, and time-dependent…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Jung Hyun Oh , D. Ahn , S. W. Hwang

We develop the concept of scattering matrix and we use it to perform stable numerical calculations of resonant tunneling of electrons through a multiple potential barrier in a semiconductor heterostructure. Electrons move in two external…

Quantum Physics · Physics 2023-07-19 J. Z. Kaminski , E. Saczuk

Shuttling ions at high speed and with low motional excitation is essential for realizing fast and high-fidelity algorithms in many trapped-ion based quantum computing architectures. Achieving such performance is challenging due to the…

Currents across thin insulators are commonly taken as single electrons moving across classically forbidden regions; this independent particle picture is well-known to describe most tunneling phenomena. Examining quantum transport from a…

Materials Science · Physics 2007-05-23 Giorgos Fagas , Paul Delaney , James C. Greer

In this Letter, we study the real-ime dynamics of single-electron pumpings. We modulate the left tunneling barrier along with the dot level but slightly changing the right barrier to operate the single-electron pumping device at zero bias.…

Mesoscale and Nanoscale Physics · Physics 2012-07-03 Chuan-Yu Lin , Wei-Min Zhang

We propose an autonomous quantum heat engine based on the thermally driven oscillation of a single electron shuttle. The electronic degree of freedom of this device acts as an internal dynamical controller which switches the interaction of…

Quantum Physics · Physics 2018-09-13 Behnam Tonekaboni , Brendon W. Lovett , Thomas M. Stace

An analytical analysis of quantum shuttle phenomena in a nanoelectromechanical single-electron transistor has been performed in the realistic case, when the electron tunnelling length is much greater than the amplitude of the zero point…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 D. Fedorets , L. Y. Gorelik , R. I. Shekhter , M. Jonson

The behavior of a charge shuttle under a pure AC field has been recently considered theoretically and experimentally. If the system presents an asymmetry in the tunneling amplitudes the device acts as a nano-electromechanical rectifier,…

Mesoscale and Nanoscale Physics · Physics 2009-09-29 F. Pistolesi , R. Fazio

The basis of synchronous manipulation of individual electrons in solid-state devices was laid by the rise of single-electronics about two decades ago. Ultra-small structures in a low temperature environment form an ideal domain of…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Jukka P. Pekola , Juha J. Vartiainen , Mikko Mottonen , Olli-Pentti Saira , Matthias Meschke , Dmitri V. Averin

We present a single-electron device for the manipulation of charge states via quantum interference in nanostructured electrodes. Via self-inductance effects, we induce two independent magnetic fluxes in the electrodes and we demonstrate…

Superconductivity · Physics 2022-05-17 Emanuele Enrico , Luca Croin , Elia Strambini , Francesco Giazotto

The electronic conductance of a molecule making contact to electrodes is determined by the coupling of discrete molecular states to the continuum electrode density of states. Interactions between bound states and continua can be modeled…

Other Condensed Matter · Physics 2007-05-23 Thomas M. Henderson , Giorgos Fagas , Eoin Hyde , James C. Greer

Semiconductor-based quantum dot single-electron pumps are currently the most promising candidates for the direct realization of the emerging quantum standard of the ampere in the International System of Units. Here, we discuss a silicon…

Mesoscale and Nanoscale Physics · Physics 2016-04-27 Tuomo Tanttu , Alessandro Rossi , Kuan Yen Tan , Akseli Mäkinen , Kok Wai Chan , Andrew S. Dzurak , Mikko Möttönen

We report measurements of charge configurations and charge transfer dynamics in a hybrid single-electron box composed of aluminum and copper. We used two single-electron transistors (SETs) to simultaneously read out different parts of the…

Mesoscale and Nanoscale Physics · Physics 2014-07-08 Chia-Heng Sun , Po-Chen Tai , Jheng-An Jiang , Cen-Shawn Wu , Jeng-Chung Chen , Yung-Fu Chen

The phase of a single quantum state is undefined unless the history of its creation provides a reference point. Thus quantum interference may seem hardly relevant for the design of deterministic single-electron sources which strive to…

Mesoscale and Nanoscale Physics · Physics 2012-11-21 Vyacheslavs Kashcheyevs , Janis Timoshenko

We present numerical results on electron tunneling in a single-electron box at low temperature. The effective action of this device is equivalent to the Hamiltonian of a classical XY spin chain with long ranged interactions. Using an…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Philipp Werner , Matthias Troyer

Electron tunneling in ferromagnetic single-electron transistors is considered theoretically in the sequential tunneling regime. A new formalism is developed, which operates in a two-dimensional space of states, instead of one-dimensiona…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 J. Barnas , J. Martinek , G. Michalek , B. R. Bulka , A. Fert

We analyze electron transport through a quantum shuttle for the applied voltage below the instability threshold. We obtain current-voltage characteristics of this system and show that at low temperature they exhibit pronounced steps. The…

Materials Science · Physics 2009-11-10 Anatoly Yu. Smirnov , Lev G. Mourokh

We report a direct detection of time correlated single-electron tunneling oscillations in a series array of small tunnel junctions. Here the current, I, is made up of a lattice of charge solitons moving throughout the array by time…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Jonas Bylander , Tim Duty , Per Delsing

The ability to coherently transport electron-spin states between different sites of gate-defined semiconductor quantum dots is an essential ingredient for a quantum-dot-based quantum computer. Previous shuttles using electrostatic gating…

Mesoscale and Nanoscale Physics · Physics 2016-07-27 T. A. Baart , N. Jovanovic , C. Reichl , W. Wegscheider , L. M. K. Vandersypen

Electron shuttling is emerging as a key mechanism for enabling long-range coupling in scalable spin-qubit architectures. Bringing shuttling waveform generation into the cryostat can improve scalability, but imposes strict area and power…

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