6 papers · 1 filter
Heisenberg-Weyl bosonic phase spaces: emergence, constraints and quantum informational resources
Eloi Descamps, Astghik Saharyan, Arne Keller +1
Phase space quasi-probability functions provide powerful representations of quantum states and operators, as well as criteria for assessing quantum computational resources. In disc…
Resources for bosonic metrology: quantum-enhanced precision from a superselection rule perspective
Astghik Saharyan, Eloi Descamps, Arne Keller +1
Bosonic systems, particularly in quantum optics and atomic physics, are leading platforms for achieving quantum enhanced precision in parameter estimation. By exploiting properties…
Unified framework for bosonic quantum information encoding, resources and universality from superselection rules
Eloi Descamps, Astghik Saharyan, Adrien Chivet +2
A convenient way to represent quantum optical states is through the quadrature basis of single-modes of the field. This framework provides intuitive definitions for quasi-classical…
Effective models for quantum optics with multilayer open cavities
Astghik Saharyan, Juan-Rafael Álvarez, Axel Kuhn +1
Effective models to describe the dynamics of an open cavity have been extensively discussed in the literature. In many of these models the cavity leakage to the outside is treated…
Light-matter interaction in open cavities with dielectric stacks
Astghik Saharyan, Juan-Rafael Álvarez, Thomas H. Doherty +2
We evaluate the exact dipole coupling strength between a single emitter and the radiation field within an optical cavity, taking into account the effects of multilayer dielectric m…
Microscopic and phenomenological models of driven systems in structured reservoirs
Gian Luca Giorgi, Astghik Saharyan, Stéphane Guérin +2
We study the paradigmatic model of a qubit interacting with a structured environment and driven by an external field by means of a microscopic and a phenomenological model. The val…