49 citations · 93 across the 9 of their papers we have counts for
9 papers
Quantum state of interacting primordial inhomogeneities: de-squeezing and decoherence
Amaury Micheli, Yuto Oshima, Tomo Takahashi
We investigate how interactions affect the quantum state of scalar perturbations during inflation and the quantum correlations they may exhibit. Focusing on the case of scalar pert…
Parametric pair production of collective excitations in a Bose-Einstein condensate
Victor Gondret, Rui Dias, Clothilde Lamirault +7
By exciting the transverse breathing mode of an elongated Bose-Einstein condensate, we parametrically produce longitudinal collective excitations in a pairwise manner. This process…
Observation of entanglement in a cold atom analog of cosmological preheating
Victor Gondret, Clothilde Lamirault, Rui Dias +8
We observe entanglement between collective excitations of a Bose-Einstein condensate in a configuration analogous to particle production during the preheating phase of the early un…
Dissipative parametric resonance in a modulated 1D Bose gas
Amaury Micheli, Scott Robertson
We synthesize results of previous works to give a coherent and self-consistent account of parametric resonance in a modulated quasi-1D Bose gas in the presence of a dissipative mec…
Entanglement and decoherence in cosmology and in analogue gravity experiments
Amaury Micheli
This thesis is dedicated to analysing the generation and destruction of quantum correlations in the context of inflationary cosmology and an experiment of 'analogue' preheating. In…
Comparing quantumness criteria
Jerome Martin, Amaury Micheli, Vincent Vennin
Measuring the quantumness of a system can be done with a variety of methods. In this article we compare different criteria, namely quantum discord, Bell inequality violation and no…
Quantum cosmological gravitational waves?
Amaury Micheli, Patrick Peter
General relativity and its cosmological solution predicts the existence of tensor modes of perturbations evolving on top of our Friedman-Lemaître-Robertson-Walker expanding Univers…
Phonon decay in 1D atomic Bose quasicondensates via Beliaev-Landau damping
Amaury Micheli, Scott Robertson
In a 1D Bose gas, there is no non-trivial scattering channel involving three Bogoliubov quasiparticles that conserves both energy and momentum. Nevertheless, we show that such 3-wa…
Discord and Decoherence
Jerome Martin, Amaury Micheli, Vincent Vennin
In quantum information theory, quantum discord has been proposed as a tool to characterise the presence of "quantum correlations" between the subparts of a given system. Whether a…