6 papers
Lamb Shift of a Static Atom Facing a Rotating Surface
César D. Fosco, Fernando C. Lombardo, Francisco D. Mazzitelli
We study how the Lamb shift of a static atom is modified when a nearby planar body rotates rigidly about its normal while the atom is held at a fixed distance . We derive a gene…
Dissipative Effects in Transmission Line Analogues of Hawking Radiation
Elián Urtubey, Fernando C. Lombardo, Paula I. Villar
Hawking radiation is a fundamental result of quantum field theory in curved spacetime, yet its direct observation remains beyond current experimental capabilities. Circuit quantum…
Ergotropy from Geometric Phases in a Dephasing Qubit
Fernando C. Lombardo, Paula I. Villar
We analyze the geometric phase and dynamic phase acquired by a qubit coupled to an environment through pure dephasing, establishing a direct connection between phase accumulation a…
Shortcuts to adiabaticity, unexciting backgrounds, and reflectionless potentials
Fernando C. Lombardo, Francisco D. Mazzitelli
We analyze shortcuts to adiabaticity (STA) and their completions for the quantum harmonic oscillator (QHO) with time-dependent frequency, as well as for quantum field theory (QFT)…
Dynamical Casimir effect in superconducting cavities: from photon generation to universal quantum gates
Fernando C. Lombardo, Paula I. Villar
This chapter explores various aspects of the Dynamical Casimir Effect (DCE) and its implications in the context of circuit quantum electrodynamics (cQED). We begin by reviewing the…
Controlled-squeeze gate in superconducting quantum circuits
Nicolás F. Del Grosso, Rodrigo G. Cortiñas, Paula I. Villar +2
We present a method to prepare non-classical states of the electromagnetic field in a microwave resonator. It is based on a controlled gate that applies a squeezing operation on a…