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Charge quantization, or the absence thereof, is a central theme in quantum circuit theory, with dramatic consequences for the predicted circuit dynamics. Very recently, the question of whether or not charge should actually be described as…

介观与纳米尺度物理 · 物理学 2021-05-05 Roman-Pascal Riwar

We study the one-dimensional quarter-filled extended Hubbard model with an alternating transfer integral. In the strong-dimerization limit the charge part is described by the quantum Ising model which shows the two-dimensional Ising…

强关联电子 · 物理学 2009-11-10 Hiromi Otsuka , Masaaki Nakamura

We develop a semianalytical model for monolayer graphene field-effect transistors in the ballistic limit. Two types of devices are considered: in the first device, the source and drain regions are doped by charge transfer with Schottky…

介观与纳米尺度物理 · 物理学 2014-09-24 Claudio Pugnaghi , Roberto Grassi , Antonio Gnudi , Valerio Di Lecce , Elena Gnani , Susanna Reggiani , Giorgio Baccarani

A model of the Li-diffused inactive layer in P-type high purity germanium detectors is built to describe the transportation of charge carriers and calculate the charge collection efficiency therein. The model is applied to calculate charge…

仪器与探测器 · 物理学 2022-12-29 W. H. Dai , H. Ma , Q. Yue , L. T. Yang , Z. Zeng , J. P. Cheng , J. L. Li

Electrostatic confinement in semiconductors provides a flexible platform for the emulation of interacting electrons in a two-dimensional lattice, including in the presence of gauge fields. This combination offers the potential to realize a…

介观与纳米尺度物理 · 物理学 2019-06-04 T. Hensgens , U. Mukhopadhyay , P. Barthelemy , S. Fallahi , G. C. Gardner , C. Reichl , W. Wegscheider , M. J. Manfra , L. M. K. Vandersypen

Accurate charge densities are central to electronic-structure theory, but computing charge-state-dependent densities with density functional theory remains too expensive for large-scale screening and defect workflows. We present ChargeFlow,…

材料科学 · 物理学 2026-03-26 Tri Minh Nguyen , Sherif Abdulkader Tawfik , Truyen Tran , Svetha Venkatesh

We provide a physical analysis of the charging and detection of the first few electrons in a laterally-coupled GaAs/AlGaAs quantum dot (LCQD) circuit with integrated quantum point contact (QPC) read-out. Our analysis is based on the…

介观与纳米尺度物理 · 物理学 2009-11-10 L. -X. Zhang , P. Matagne , J. P. Leburton , R. Hanson , L. P. Kouwenhoven

We present a compact physics-based model of the current-voltage characteristics of graphene field-effect transistors, of especial interest for analog and radio-frequency applications where bandgap engineering of graphene could be not…

介观与纳米尺度物理 · 物理学 2011-10-27 David Jimenez , Oana Moldovan

A recent study revealed the dynamics of the charge sector of a one-dimensional quarter-filled electronic system with extended Hubbard interactions to be that of an effective pseudospin transverse-field Ising model (TFIM) in the strong…

强关联电子 · 物理学 2009-11-13 Siddhartha Lal , Mukul S. Laad

Gate-tunable Josephson junctions (JJs) are the backbone of superconducting classical and quantum computation. Typically, these systems exploit low charge concentration materials, and present technological diffculties limiting their…

介观与纳米尺度物理 · 物理学 2019-09-24 Federico Paolucci , Francesco Vischi , Giorgio De Simoni , Claudio Guarcello , Paolo Solinas , Francesco Giazotto

This article is concerned with the mathematical analysis of the Kohn-Sham and extended Kohn-Sham models, in the local density approximation (LDA) and generalized gradient approximation (GGA) frameworks. After recalling the mathematical…

量子物理 · 物理学 2008-10-01 Arnaud Anantharaman , Eric Cancès

Heavy-light mesons, heavy quarkonium and doubly heavy baryons are briefly discussed. Effective field theories (EFTs) of QCD based on the heavy quark mass expansion 1/m_Q provide a unified framework to describe all three systems. They…

高能物理 - 唯象学 · 物理学 2016-09-06 Joan Soto

The storage and transfer of energy through quantum batteries are key elements in quantum networks. Here, we propose a charger design based on transitionless quantum driving (TQD), which allows for inherent control over the battery charging…

量子物理 · 物理学 2022-01-19 Luiz F. C. Moraes , Andreia Saguia , Alan C. Santos , Marcelo S. Sarandy

Based on a network graph analysis of the underlying circuit, a quantum theory of arbitrary superconducting charge qubits is derived. Describing the dissipative elements of the circuit with a Caldeira-Leggett model, we calculate the…

介观与纳米尺度物理 · 物理学 2007-05-23 Guido Burkard

Graphene field-effect transistors (GFETs) are among the most promising platforms for ultrasensitive chemical and biological sensing due to their high carrier mobility, large surface area, and low intrinsic noise. However, conventional…

应用物理 · 物理学 2025-09-05 Vinay Kammarchedu , Heshmat Asgharian , Hossein Chenani , Aida Ebrahimi

We propose a two-dimensional time-reversal invariant system of essentially non-interacting electrons on a square lattice that exhibits configurations with fractional charges e/2. These are vortex-like topological defects in the dimerization…

强关联电子 · 物理学 2011-08-08 B. Seradjeh , C. Weeks , M. Franz

A novel two-qubit entangling gate for trapped-ion quantum processors is proposed theoretically and demonstrated experimentally. During the gate, double-dressed quantum states are created by applying a phase-modulated continuous driving…

We fabricate electric double-layer field-effect transistor (EDL-FET) devices on mechanically exfoliated few-layer graphene. We exploit the large capacitance of a polymeric electrolyte to study the transport properties of three, four and…

介观与纳米尺度物理 · 物理学 2017-01-11 E. Piatti , S. Galasso , M. Tortello , J. R. Nair , C. Gerbaldi , D. Daghero , M. Bruna , S. Borini , R. S. Gonnelli

We present a general introduction to the non-zero temperature dynamic and transport properties of low-dimensional systems near a quantum phase transition. Basic results are reviewed in the context of experiments on the spin-ladder…

强关联电子 · 物理学 2007-05-23 Subir Sachdev , Matthias Vojta

In this paper, we employ the gauge/gravity duality to study jet quenching (JQ) phenomena in the quark-gluon plasma. For this purpose, we implement holographic QCD models constructed from an Einstein-Maxwell-dilaton gravity at finite…

高能物理 - 理论 · 物理学 2026-01-01 Irina Ya. Aref'eva , Ali Hajilou , Alexander Nikolaev , Pavel Slepov