Photon Generation in an Electromagnetic Cavity with a Time-Dependent Boundary
Artikel i vetenskaplig tidskrift, 2010

We report the observation of photon generation in a microwave cavity with a time-dependent boundary condition. Our system is a microfabricated quarter-wave coplanar waveguide cavity. The electrical length of the cavity is varied using the tunable inductance of a superconducting quantum interference device. It is measured at a temperature significantly less than the resonance frequency. When the length is modulated at approximately twice the static resonance frequency, spontaneous parametric oscillations of the cavity field are observed. Time-resolved measurements of the dynamical state of the cavity show multiple stable states. The behavior is well described by theory. Our results may be considered a preliminary step towards demonstrating the dynamical Casimir effect.

Författare

Christopher Wilson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Martin Sandberg

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Fredrik Persson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Vitaly Shumeiko

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Per Delsing

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 105 23 233907-

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Fysik

Fundament

Grundläggande vetenskaper

DOI

10.1103/PhysRevLett.105.233907