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An extended Josephson junction intrinsically couples the superconducting current to the microwave cavity in the insulating barrier. We demonstrate that this coupling produces sidebands in the microwave cavity resonances of the junction. By…

Mesoscale and Nanoscale Physics · Physics 2010-10-29 J. Hammer , M. Aprili , I. Petkovic

Niobium is commonly used for superconducting quantum systems as readout resonators, capacitors, and interconnects. The coherence time of the superconducting qubits is mainly limited by microwave dissipation attributed to two-level system…

A wide variety of applications of microwave cavities, such as measurement and control of superconducting qubits, magnonic resonators, and phase noise filters, would be well served by having a highly tunable microwave resonance. Often this…

Instrumentation and Detectors · Physics 2020-07-07 T. J. Clark , V. Vadakkumbatt , F. Souris , H. Ramp , J. P Davis

We study heat transport in hybrid normal metal - superconductor - normal metal (NSN) structures. We find the thermal conductance of a short superconducting wire to be strongly enhanced beyond the BCS value due to inverse proximity effect.…

Superconductivity · Physics 2019-08-15 J. T. Peltonen , P. Virtanen , M. Meschke , J. V. Koski , T. T. Heikkilä , J. P. Pekola

We measure the response and thermal motion of a high-Q nanomechanical oscillator coupled to a superconducting microwave cavity in the resolved-sideband regime where the oscillator's resonance frequency exceeds the cavity's linewidth. The…

Quantum Physics · Physics 2008-11-06 J. D. Teufel , J. W. Harlow , C. A. Regal , K. W. Lehnert

By computer numerical simulation of heating of a dust conducting particle in homogeneous plasma it was shown that depending on initial temperature of a particle both heating and cooling were possible with formation of two different…

Optics · Physics 2007-05-23 L. I. Ognev

We propose a scheme able to entangle at the steady state a nanomechanical resonator with a microwave cavity mode of a driven superconducting coplanar waveguide. The nanomechanical resonator is capacitively coupled with the central conductor…

Mesoscale and Nanoscale Physics · Physics 2009-09-29 D. Vitali , P. Tombesi , M. J. Woolley , A. C. Doherty , G. J. Milburn

We suggest and theoretically study the local field enhancement in a metamaterial sample shaped as a pyramid and formed by plasmonic nanoplates alternating with dielectric ones in parallel to the pyramid base. Due to very small thickness of…

Optics · Physics 2010-03-10 Constantin Simovski , Jacek Pniewski

This paper proposes an experiment to easily detect radiative heat transfer in the microwave range. Following an idea given by Pendry more than a decade ago [1], we show that a 3D array of tungsten 2micron radius wires with a 1 cm period…

Optics · Physics 2015-07-23 Karl Joulain , Jérémie Drevillon , Younès Ezzahri

Strongly disordered pseudogapped superconductors are expected to display arbitrary high values of kinetic inductance close to superconductor-insulator transition (SIT) that makes them attractive for the implementation of dissipationless…

Superconductivity · Physics 2018-01-24 M. V. Feigel'man , L. B. Ioffe

We show that a temporal soliton can induce resonant radiation by three-wave mixing nonlinearities. This constitutes a new class of resonant radiation whose spectral positions are parametrically tunable. The experimental verification is done…

Optics · Physics 2017-04-12 B. Zhou , X. Liu , H. R. Guo , X. L. Zeng , X. F. Chen , H. P. Chung , Y. H. Chen , M. Bache

We consider a two-band superconductor with relative phase $\pi $ between the two order parameters as a model for the superconducting state in ferropnictides. Within this model we calculate the microwave response and the NMR relaxation rate.…

Superconductivity · Physics 2015-05-13 O. V. Dolgov , A. A. Golubov , D. Parker

The exceptional tunability of two-dimensional van der Waals materials offers unique opportunities for exploring novel superconducting phases. However, in such systems, the measurement of superfluid phase stiffness, a fundamental property of…

We explore experimentally a quantum metamaterial based on a superconducting chip with 25 frequency-tunable transmon qubits coupled to a common coplanar resonator. The collective bright and dark modes are probed via the microwave response,…

We develop an engineered microwave environment for coupling high Q superconducting resonators to quantum dots using a multilayer fabrication stack for the dot control wiring. Analytic and numerical models are presented to understand how…

Mesoscale and Nanoscale Physics · Physics 2020-06-05 Nathan Holman , J. P. Dodson , L. F. Edge , S. N. Coppersmith , M. Friesen , R. McDermott , M. A. Eriksson

Irradiation of cuprate high-$T_c$ superconductors with light ions of moderate energy creates point defects that lead to a reduction or full suppression of the critical temperature. By shaping the ion flux with a stencil mask, nanostructures…

Superconductivity · Physics 2019-05-29 Kristijan L. Mletschnig , Wolfgang Lang

A method based on thermal bistability for ultralow-threshold microlaser optimization is demonstrated. When sweeping the pump laser frequency across a pump resonance, the dynamic thermal bistability slows down the power variation. The…

Optics · Physics 2015-10-01 Guoping Lin , Y. Candela , O. Tillement , Zhiping Cai , V. Lefèvre-Seguin , J. Hare

The research is focused on the modeling of nonlinear properties of High Temperature Superconducting (HTS) thin films, using Bardeen, Cooper, Schrieffer and Lumped Element Circuit theories, with purpose to enhance microwave power handling…

Superconductivity · Physics 2015-09-23 Dimitri O. Ledenyov , Viktor O. Ledenyov

We numerically study the tuning of the radiative heat transfer between a spherical InSb nanoparticle in the vicinity of a flat SiC surface assisted by a static magnetic field. By changing the value of the applied magnetic field, the…

Mesoscale and Nanoscale Physics · Physics 2022-04-20 S. G. Castillo-López , A. Márquez , R. Esquivel-Sirvent

We present measurements of the microwave surface impedance of the single-layer cuprate Tl2201, deep in the overdoped regime, with Tc ~ 25 K. Measurements have been made using cavity perturbation of a dielectric resonator at 17 discrete…