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We report on conductance fluctuation in quasi-one-dimensional wires made of epitaxial Bi$_{2}$Se$_{3}$ thin film. We found that this type of fluctuation decreases as the wire length becomes longer and that the amplitude of the fluctuation…

Mesoscale and Nanoscale Physics · Physics 2013-10-30 Sadashige Matsuo , Kensaku Chida , Daichi Chiba , Teruo Ono , Keith Slevin , Kensuke Kobayashi , Tomi Ohtsuki , Cui-Zu Chang , Ke He , Xu-Cun Ma , Qi-Kun Xue

We derive a non-perturbative equation for the large scale structure power spectrum of long-wavelength modes. Thereby, we use an operator product expansion together with relations between the three-point function and power spectrum in the…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-19 Mathias Garny , Thomas Konstandin , Rafael A. Porto , Laura Sagunski

Inhomogeneities and junctions in wires are natural sources of scattering, and hence resistance. A conducting fixed point usually requires an adiabatically smooth system. One notable exception is "healing", which has been predicted in…

Strongly Correlated Electrons · Physics 2014-01-28 N. Sedlmayr , D. Morath , J. Sirker , S. Eggert , I. Affleck

The electronic and transport properties of atomic-size contacts are analyzed theoretically using a self-consistent tight-binding model. Our results show that, for s-like metals, a sufficiently narrow contact exhibits well defined resonant…

Mesoscale and Nanoscale Physics · Physics 2016-08-15 A. Levy Yeyati , A. Martín-Rodero , F. Flores

The conductance through a semi-infinite one-dimensional wire, partly embedded in a superconducting bulk electrode, is studied. When the electron-electron interactions within the wire are strongly repulsive, the wire effectively decouples…

Strongly Correlated Electrons · Physics 2009-11-13 Raphael Matthews , Oded Agam

Physical implementations of qubits can be extremely sensitive to environmental coupling, which can result in decoherence. While efforts are made for protection, coupling to the environment is necessary to measure and manipulate the state of…

A universal mechanism of superconductivity applicable to ``low temperature'' and ``high temperature'' superconductors is proposed in this paper. With this model of mechanism experimental facts of superconductors can be qualitatively…

Superconductivity · Physics 2007-05-23 W. Z. Shangguan , T. C. Au-Yeung

We start a systematic investigation of the possibility to have supersymmetry (SUSY) to be an asymptotic state of the gauge theory in the high energy (UV) limit, due to the renormalization group running of coupling constants of the theory.…

High Energy Physics - Phenomenology · Physics 2013-05-14 Bruce L. Sánchez-Vega , Ilya L. Shapiro

The execution of quantum circuits on real systems has largely been limited to those which are simply time-ordered sequences of unitary operations followed by a projective measurement. As hardware platforms for quantum computing continue to…

To provide an understanding of the universal thermodynamic properties of cuprate superconductors, emerging from the empirical correlations and phase diagrams, we analyze them in terms of the scaling theory of finite temperature and quantum…

Superconductivity · Physics 2007-05-23 T. Schneider

The experimental investigations done in our paper Phys.Rev.B84,014522(2011) allowed us to establish that the superconducting fluctuations (SCF) always die out sharply with increasing T. But contrary to the claim done in the comment of…

Superconductivity · Physics 2012-05-08 F. Rullier-Albenque , H. Alloul , G. Rikken

Fault models are indispensable for many EDA tasks, so as for design and implementation of quantum hardware. In this article, we propose a fault model for superconducting quantum systems. Our fault model reflects the real fault behavior in…

Quantum Physics · Physics 2023-03-10 Qifan Huang , Boxi Li , Minbo Gao , Mingsheng Ying

We study the scattering of photons by a two-level system ultrastrongly coupled to a one-dimensional waveguide. Using a combination of the polaron transformation with scattering theory we can compute the one-photon scattering properties of…

Quantum Physics · Physics 2018-04-18 Tao Shi , Yue Chang , Juan Jose Garcia-Ripoll

In this article two models for charges distributions are discussed. On the basis of our consideration we put different points of view for stationary state. We prove that only finite energy model for charges' distribution and well-known…

Mathematical Physics · Physics 2011-06-08 Ashot Vagharshakyan

Inter-qubit coupling and qubit connectivity in a processor are crucial for achieving high fidelity multi-qubit gates and efficient implementation of quantum algorithms. Typical superconducting processors employ relatively weak transverse…

Quantum Physics · Physics 2018-11-21 Tanay Roy , Madhavi Chand , Anirban Bhattacharjee , Sumeru Hazra , Suman Kundu , Kedar Damle , R. Vijay

We show that for the simplest models of gauge mediated supersymmetry breaking, including all existing models, the true vacuum will not preserve QCD if it communicates supersymmetry breaking to the visible sector. We show that the desired…

High Energy Physics - Phenomenology · Physics 2009-09-15 Indranil Dasgupta , Bogdan A. Dobrescu , Lisa Randall

We study the effects of quantum fluctuations on the transport properties of multiband superconductors near a pair-breaking quantum critical point. For this purpose, we consider a minimal model of the quantum phase transition in a system…

Superconductivity · Physics 2023-11-28 Maxim Dzero , Maxim Khodas , Alex Levchenko

One dimensional (1D) quantum wires exhibit a conductance feature near 0.7 x 2e^2/h in connection with many-body interactions involving the electron spin. With the possibility of exploiting this effect for novel spintronic device…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 D. J. Reilly

Spin chains have long been considered an effective medium for long-range interactions, entanglement generation, and quantum state transfer. In this work, we explore the properties of a spin chain implemented with superconducting flux…

Computing the electric eddy currents in non-linear materials, such as superconductors, is \E{not straightforward}. The design of superconducting magnets and power applications needs electromagnetic computer modeling, being in many cases a…

Superconductivity · Physics 2017-06-02 Enric Pardo , Milan Kapolka