4 papers
Phase Transitions in Light-Matter Systems for Quantum Sensing
Louis Garbe
When light and matter are weakly coupled, they can be described as two distinctive systems exchanging quanta of energy. By contrast, for very large coupling strength, the systems h…
Dissipation-induced bistability in the two-photon Dicke model
Louis Garbe, Peregrine Wade, Fabrizio Minganti +3
The Dicke model is a paradigmatic quantum-optical model describing the interaction of a collection of two-level systems with a single bosonic mode. Effective implementations of thi…
Critical Quantum metrology with a finite-component quantum phase transition
Louis Garbe, Matteo Bina, Arne Keller +2
Physical systems close to a quantum phase transition exhibit a divergent susceptibility, suggesting that an arbitrarily-high precision may be achieved by exploiting quantum critica…
Metrological advantage at finite temperature for Gaussian phase estimation
Louis Garbe, Simone Felicetti, Perola Milman +2
In the context of phase estimation with Gaussian states, we introduce a quantifiable definition of metrological advantage that takes into account thermal noise in the preparation p…