Europhys. Lett.
Volume 70, Number 6, June 2005
Page(s) 754 - 760
Section The physics of elementary particles and fields
Published online 18 May 2005
Europhys. Lett., 70 (6), pp. 754-760 (2005)
DOI: 10.1209/epl/i2005-10048-8

A novel experimental approach for the detection of the dynamical Casimir effect

C. Braggio1, G. Bressi2, G. Carugno3, C. Del Noce3, G. Galeazzi4, A. Lombardi4, A. Palmieri4, G. Ruoso4 and D. Zanello5

1  Dipartimento di Fisica, Università di Ferrara and INFN Via del Paradiso 12, 44100 Ferrara, Italy
2  INFN, Sezione di Pavia - Via Bassi 6, 27100 Pavia, Italy
3  INFN, Sezione di Padova - Via Marzolo 8, 35131 Padova, Italy
4  INFN, LNL - Viale dell'Università 2, 35020 Legnaro, Italy
5  INFN, Sezione di Roma - P.le A. Moro 2, 00185 Roma, Italy

received 21 January 2005; accepted in final form 27 April 2005
published online 18 May 2005

In order to observe the Casimir radiation we propose a new experimental scheme with no mechanically moving mirror. In fact we estimate that the power required for a sustained mechanical vibration would be beyond present experimental possibilities. Our apparatus consists of a superconducting electromagnetic resonant cavity with a wall covered by a semiconductor layer whose reflectivity is driven by a laser at gigahertz frequencies. The semiconductor thus acts as a moving mirror. Preliminary laboratory tests showed that a semiconductor can indeed reflect microwaves as efficiently as a conductor. In this paper we present the complete scheme that we intend to set up for the detection of the Casimir radiation.

12.20.Fv - Experimental tests.
42.50.Dv - Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements.
13.40.-f - Electromagnetic processes and properties.

© EDP Sciences 2005