177 citations · 786 across the 12 of their papers we have counts for
12 papers
Gauge invariance of the Dicke and Hopfield models
Luigi Garziano, Alessio Settineri, Omar Di Stefano +2
The Dicke model, which describes the dipolar coupling between N two-level atoms and a quantized electromagnetic field, seemingly violates gauge invariance in the presence of ultras…
Atoms in separated resonators can jointly absorb a single photon
Luigi Garziano, Alessandro Ridolfo, Adam Miranowicz +3
The coherent nonlinear process where a single photon simultaneously excites two or more two-level systems (qubits) in a single-mode resonator has recently been theoretically predic…
Conversion of Mechanical Noise into Correlated Photon Pairs: Dynamical Casimir effect from an incoherent mechanical drive
Alessio Settineri, Vincenzo Macrì, Luigi Garziano +3
We show that the dynamical Casimir effect in an optomechanical system can be achieved under incoherent mechanical pumping. We adopt a fully quantum-mechanical approach for both the…
Polariton spectrum of the Dicke-Ising model
Erika Cortese, Luigi Garziano, Simone De Liberato
The Dicke-Ising model describes cavity quantum electrodynamics setups in which dipoles couple not only with the photonic cavity field but also to each other through dipole-dipole i…
Heralded multiphoton states with coherent spin interactions in waveguide QED
V Paulisch, A González-Tudela, H J Kimble +1
WaveguideQEDoffers the possibility of generating strong coherent atomic interactions either through appropriate atomic configurations in the dissipative regime or in the bandgap re…
Cavity QED Beyond Rotating Wave Approximation: Photon Bunching from the Emission of Individual Qubits
Luigi Garziano, Alessandro Ridolfo, Simone De Liberato +1
Photon antibunching in the light scattered by single quantum emitters is one of the hallmarks of quantum optics, providing an unequivocal demonstration of the quantized nature of t…
Frequency conversion in ultrastrong cavity QED
Anton Frisk Kockum, Vincenzo Macrì, Luigi Garziano +2
We propose a new method for frequency conversion of photons which is both versatile and deterministic. We show that a system with two resonators ultrastrongly coupled to a single q…
Cutting Feynman Loops in Ultrastrong Cavity QED: Stimulated Emission and Reabsorption of Virtual Particles Dressing a Physical Excitation
Omar Di Stefano, Roberto Stassi, Luigi Garziano +3
In quantum field theory, bare particles are dressed by a cloud of virtual particles to form physical particles. The virtual particles affect properties such as the mass and charge…
A Single Photon Can Simultaneously Excite Two or More Atoms
Luigi Garziano, Roberto Stassi, Vincenzo Macrì +3
We consider two separate atoms interacting with a single-mode optical resonator. When the frequency of the resonator field is twice the atomic transition frequency, we show that th…
Output Field-Quadrature Measurements and Squeezing in Ultrastrong Cavity-QED
Roberto Stassi, Salvatore Savasta, Luigi Garziano +2
We study the squeezing of output quadratures of an electro-magnetic field escaping from a resonator coupled to a general quantum system with arbitrary interaction strengths. The ge…
Multiphoton Quantum Rabi Oscillations in Ultrastrong Cavity QED
Luigi Garziano, Roberto Stassi, Vincenzo Macrì +3
When an atom is strongly coupled to a cavity, the two systems can exchange a single photon through a coherent Rabi oscillation. This process enables precise quantum-state engineeri…
Quantum control and long-range quantum correlations in dynamical Casimir arrays
Roberto Stassi, Simone De Liberato, Luigi Garziano +2
The recent observation of the dynamical Casimir effect in a modulated superconducting waveguide, coronating thirty years of world-wide research, empowered the quantum technology co…