6 papers
Non-Gaussianity from superselection rules
Nicolas Moulonguet, Eloi Descamps, José Lorgeré +3
The quantum theory of the electromagnetic field enables the description of multiphoton states exhibiting nonclassical statistical properties, often reflected in non-Gaussian phase-…
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…
The Role of Symmetry in Generalized Hong-Ou-Mandel Interference and Quantum Metrology
Ãloi Descamps, Arne Keller, Pérola Milman
The Hong-Ou-Mandel interferometer is a foundational tool in quantum optics, with both fundamental and practical significance. Earlier works identified that input-state symmetry und…
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…
Measuring entanglement along collective operators
Ãloi Descamps, Arne Keller, Pérola Milman
We introduce a framework for the study of multiparty entanglement by analyzing the behavior of collective variables. Throughout the manuscript, we explore a specific type of multip…