Soliton scattering as a measurement tool for weak signals
Artikel i vetenskaplig tidskrift, 2015

We have considered relativistic soliton dynamics governed by the sine-Gordon equation and affected by short spatial inhomogeneities of the driving force and thermal noise. Developed analytical and numerical methods for calculation of soliton scattering at the inhomogeneities allowed us to examine the scattering as a measurement tool for sensitive detection of polarity of the inhomogeneities. We have considered the superconducting fluxonic ballistic detector as an example of the device in which the soliton scattering is utilized for quantum measurements of superconducting flux qubits. We optimized the soliton dynamics for the measurement process varying the starting and the stationary soliton velocity as well as configuration of the inhomogeneities. For experimentally relevant parameters we obtained the signal-to-noise ratio above 100 reflecting good practical usability of the measurement concept.

Jitter

Josephson Transmission-Line

Junction

Dna

Nonlinear Dynamics

Circuits

Systems

Vortex

Pulse

Författare

, II Soloviev

N. V. Klenov

L. Pankratov

L. S. Revin

E. Il'Ichev

Leonid Kuzmin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 92

Ämneskategorier

Annan teknik

DOI

10.1103/PhysRevB.92.014516