Dynamical Casimir Effect in a Superconducting Coplanar Waveguide
Artikel i vetenskaplig tidskrift, 2009

We investigate the dynamical Casimir effect in a coplanar waveguide (CPW) terminated by a superconducting quantum interference device (SQUID). Changing the magnetic flux through the SQUID parametrically modulates the boundary condition of the CPW, and thereby, its effective length. Effective boundary velocities comparable to the speed of light in the CPW result in broadband photon generation which is identical to the one calculated in the dynamical Casimir effect for a single oscillating mirror. We estimate the power of the radiation for realistic parameters and show that it is experimentally feasible to directly detect this nonclassical broadband radiation.

Författare

Robert Johansson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Göran Johansson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Christopher Wilson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Franco Nori

Physical Review Letters

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

Vol. 103 147003-

Ämneskategorier

Annan fysik

Den kondenserade materiens fysik

DOI

10.1103/PhysRevLett.103.147003