9 papers
Transitions to super-radiance in ensembles of incoherently pumped emitters
Laszlo Rassaert, Tommaso Roscilde
Super-radiance is a striking phenomenon resulting from the collective interaction of emitters with light, and it is fundamentally related to the appearance of long-range correlatio…
Universal spin-squeezing dynamics in spinor condensates
Nikolaos Giovanoudis, Navid Kazemiseresht, Fabio Mezzacapo +2
The production of large-scale entangled states is one of the main goals of next-generation quantum technologies, with an immediate potential for applications in the context of enta…
Observation of universal non-Gaussian statistics of the order parameter across a continuous phase transition
Maxime Allemand, Géraud Dupuy, Géraud Dupuy +8
Second-order phase transitions are characterised by critical scaling and universality. The singular behaviour of thermodynamic quantities at the transition, in particular, is deter…
Quantum correlations in the steady state of light-emitter ensembles from perturbation theory
Dolf Huybrechts, Tommaso Roscilde
The coupling of a quantum system to an environment leads generally to decoherence, and it is detrimental to quantum correlations within the system itself. Yet some forms of quantum…
Scalable spin squeezing from spontaneous breaking of a continuous symmetry
Tommaso Comparin, Fabio Mezzacapo, Martin Robert-de-Saint-Vincent +1
Spontaneous symmetry breaking (SSB) is a property of Hamiltonian equilibrium states which, in the thermodynamic limit, retain a finite average value of an order parameter even afte…
Giant number-parity effect and scalable spin squeezing in Luttinger liquids
Filippo Caleca, Saverio Bocini, Fabio Mezzacapo +1
Finite-size quantum spin systems can be magnetized by the application of a symmetry-breaking field, but in general their symmetry is expected to be restored once the field is turne…