Dynamical Casimir effect in a double tunable superconducting circuit

F. C. LOMBARDO, F. D. MAZZITELLI, P. I. VILLAR, AND A. SOBA

PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS

AMER PHYSICAL SOC

Lugar: New York; Año: 2018 vol. 98 p. 225121 - 2251211

1050-2947

We present an analytical and numerical analysis of the particle creation in a cavity ended with twosuperconducting quantum interference devices, both subjected to time-dependent magnetic fields. In the linearand lossless regime, the problem can be modeled by a free quantum field in 1 + 1 dimensions, in the presenceof boundary conditions that involve a time-dependent linear combination of the field and its spatial and timederivatives. We consider a situation in which the boundary conditions at both ends are periodic functions oftime, focusing on interesting features as the dependence of the rate of particle creation with the characteristicsof the spectrum of the cavity, the conditions needed for parametric resonance, and interference phenomena dueto simultaneous time dependence of the boundary conditions. We point out several concrete effects that could betested experimentally.