99 citations · 284 across the 19 of their papers we have counts for
19 papers
Polarization-controlled transport of light in a two-dimensional waveguide
J. V. S. Ferreira, A. M. G de Melo, N. A. Moreira +3
Light propagation in disordered media is particularly complex due to the interference effects and polarization-mixing terms. Two-dimensional systems are particularly interesting be…
Deviations from thermal light statistics in ensembles of independent two-level emitters
Manuel Bojer, André Cidrim, Romain Bachelard +1
We investigate the light statistics of an ensemble of independent motionless two-level atoms in a product state. We identify the conditions under which the cold atomic ensemble emi…
Detecting multilevel entanglement from light-based entanglement witnesses
Pedro Rosario, Romain Bachelard
We introduce a set of electric-field based inequalities capable of detecting multilevel entanglement from a system of N quantum emitters. We determine that the polarization channel…
Postselected Entangled States by Photon Detection
Pedro Rosario, A. Cidrim, R. Bachelard
Postselection is a non-deterministic mechanism to entangle subsystems, often used in weakly-excited systems. We here show how highly-excited ensembles of two-level emitters can be…
Nonergodic extended phase for waves in three dimensions
Marcus Prado, Romain Bachelard, Robin Kaiser +1
Wave transport in complex media is determined by the nature of quasimodes at the microscopic level. In three dimensional disordered media, waves generally undergo a phase transitio…
Dimensional Control of the Coherence Time of Scattered Light in Cold Atom Clouds
Ana Cipris, Mateus a F Biscassi, J C C Capella +9
Cold atomic clouds are promising platforms for generating correlated photons, but multiple scattering and associated Doppler broadening limit their temporal coherence. Here we demo…
Unraveling Dicke Superradiant Decay with Separable Coherent Spin States
Pedro Rosario, Luiz O. R. Solak, A. Cidrim +2
We show that idealized Dicke superradiant decay from a fully inverted state can at all times be described by a positive statistical mixture of coherent spin states (CSS). Since CSS…
Light Statistics from Large Ensembles of Independent Two-level Emitters: Classical or Non-classical?
M. Bojer, A. Cidrim, P. P. Abrantes +2
We investigate the photon statistics of an ensemble of coherently driven non-interacting two-level atoms in the weak driving regime. As it turns out, the system displays unique emi…
Coherent Control of Photon Correlations in Trapped Ion Crystals
K. Singh, A. Cidrim, A. Kovalenko +4
While the spontaneous emission from independent emitters provides spatially uncorrelated photons - a typical manifestation of quantum randomness, the interference of the coherent s…
Condensation of vanishing photon emission rates in random atomic clouds
Viviana Viggiano, Romain Bachelard, Fabio Deelan Cunden +5
In the collective photon emission from atomic clouds both the atomic transition frequency and the decay rate are modified compared to a single isolated atom, leading to the effects…
Detecting entanglement from macroscopic measurements of the electric field and its fluctuations
Pedro Rosario, Alan C. Santos, Nicola Piovella +3
To address the outstanding task of detecting entanglement in large quantum systems, entanglement witnesses have emerged, addressing the separable nature of a state. Yet optimizing…
Temporal coherences of atomic chaotic light sources: the Siegert relation and beyond
Martial Morisse, Stuti Joshi, Jaromir Mika +5
Light is characterized by its electric field, yet quantum optics has revealed the importance of monitoring photon-photon correlations at all orders. We here present a comparative s…
Phononic bright and dark states: Investigating multi-mode light-matter interactions with a single trapped ion
Harry Parke, Robin Thomm, Alan C. Santos +8
Interference underpins some of the most practical and impactful properties of both the classical and quantum worlds. In this work we experimentally investigate a new formalism to d…
Nonlinear effects in Anderson localization of light by two-level atoms
Noel Araujo Moreira, Robin Kaiser, Romain Bachelard
While Anderson is a single-particle wave effect, guaranteeing a single excitation in the system can be challenging. We here tackle this limitation in the context of light localizat…
Quantum adiabatic brachistochrone for open systems
Alan C. Santos, Celso J. Villas-Boas, Romain Bachelard
We propose a variational principle to compute a quantum adiabatic brachistochrone (QAB) for open systems. Using the notion of "adiabatic speed" based on the energy gaps, we derive…
Photon blockade with ground-state neutral atoms
A. Cidrim, T. S. do Espirito Santo, J. Schachenmayer +2
We show that induced dipole-dipole interactions allow for photon blockade in subwavelength ensembles of two-level, ground-state neutral atoms. Our protocol relies on the energy shi…
Relaxation Processes in Long-Range Lattices
T. M. Rocha Filho, R. Bachelard
The relaxation to equilibrium of lattice systems with long-range interactions is investigated. The timescales involved depend polynomially on the system size, potentially leading t…
Localization versus subradiance in three-dimensional scattering of light
N. A. Moreira, R. Kaiser, R. Bachelard
We study the scattering modes of light in a three-dimensional disordered medium, in the scalar approximation and above the critical density for Anderson localization. Localized mod…
Cooperativity in light scattering by cold atoms
Tom Bienaime, Romain Bachelard, Nicola Piovella +1
A cloud of cold N two-level atoms driven by a resonant laser beam shows cooperative effects both in the scattered radiation field and in the radiation pressure force acting on the…