We found new signatures of the dynamical Casimir effect (DCE) in the context of superconducting circuits. We show that if the recent experiment made by Wilson et al., which brought the DCE into reality for the first time, is repeated with slight modifications (for instance, different values for the capacitance of the superconducting quantum interference device), three remarkable results will show up, namely, (i) a quite different spectral distribution for the created particles, deviating from the typical parabolic shape, (ii) an enhancement by a factor of approximately $5\ifmmode\times\else\texttimes\fi{}1{0}^{3}$ in the number of created particles with half driving frequency of the effective moving mirror, and (iii) an enhancement by a factor of $3\ifmmode\times\else\texttimes\fi{}1{0}^{2}$ in the particle creation rate. These results may guide the experimentalists in their search for alternative routes to observe the DCE in future experiments.

arXiv:1405.3720Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fieldsJul 1, 201418 citations

Atomic physics and quantum optics using superconducting circuits: from the Dynamical Casimir effect to Majorana fermions

Franco Nori

References available online at our web site: J.Q. You, Z.D. Wang, W. Zhang, F. Nori, Manipulating and probing Majorana fermions using superconducting circuits, (2011). Arxiv. J.R. Johansson, G. Johansson, C.M. Wilson, F. Nori, Dynamical Casimir effect in a superconducting coplanar waveguide, Phys. Rev. Lett. 103, 147003 (2009). J.R. Johansson, G. Johansson, C.M. Wilson, F. Nori, Dynamical Casimir effect in superconducting microwave circuits, Phys. Rev. A 82, 052509 (2010). C.M. Wilson, G. Johansson, A. Pourkabirian, J.R. Johansson, T. Duty, F. Nori, P. Delsing, Observation of the Dynamical Casimir Effect in a superconducting circuit. Nature, in press (Nov. 2011). P.D. Nation, J.R. Johansson, M.P. Blencowe, F. Nori, Stimulating uncertainty: Amplifying the quantum vacuum with superconducting circuits, Rev. Mod. Phys., in press (2011). J.Q. You, F. Nori, Atomic physics and quantum optics using superconducting circuits, Nature 474, 589 (2011). S.N. Shevchenko, S. Ashhab, F. Nori, Landau-Zener-Stuckelberg interferometry, Phys. Reports 492, 1 (2010). I. Buluta, S. Ashhab, F. Nori. Natural and artificial atoms for quantum computation, Reports on Progress in Physics 74, 104401 (2011). I.Buluta, F. Nori, Quantum Simulators, Science 326, 108 (2009). L.F. Wei, K. Maruyama, X.B. Wang, J.Q. You, F. Nori, Testing quantum contextuality with macroscopic superconducting circuits, Phys. Rev. B 81, 174513 (2010). J.Q. You, X.-F. Shi, X. Hu, F. Nori, Quantum emulation of a spin system with topologically protected ground states using superconducting quantum circuit, Phys. Rev. A 81, 063823 (2010).

Bulletin of the American Physical SocietyFeb 27, 20120 citations