125 citations · 254 across the 21 of their papers we have counts for
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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-…
Phase-space representation of classical simulability for arbitrary bosonic encodings
Eloi Descamps, Astghik Saharyan, Arne Keller +1
Phase-space representations can be used to reveal resources for quantum computational advantage. In odd-dimensional qudit systems, states and operations admitting non-negative quas…
The Role of Symmetry in Generalized Hong-Ou-Mandel Interference and Quantum Metrology
Éloi 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
Éloi 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…
Superselection rules and bosonic quantum computational resources
Eloi Descamps, Nicolas Fabre, Astghik Saharyan +2
We present a method to systematically identify and classify quantum optical non-classical states as classical/non-classical based on the resources they create on a bosonic quantum…
Gottesman-Kitaev-Preskill encoding in continuous modal variables of single photons
Éloi Descamps, Arne Keller, Pérola Milman
GKP states, introduced by Gottesman, Kitaev, and Preskill, are continuous variable logical qubits that can be corrected for errors caused by phase space displacements. Their experi…
Approaching maximal precision of Hong-Ou-Mandel interferometry with non-perfect visibility
Othmane Meskine, Eloi Descamps, Arne Keller +4
In quantum mechanics, the precision achieved in parameter estimation using a quantum state as a probe is determined by the measurement strategy employed. The ultimate quantum limit…
Quantum metrology using time-frequency as quantum continuous variables: Resources, sub shot-noise precision and phase space representation
Eloi Descamps, Nicolas Fabre, Arne Keller +1
We study the role of the electromagnetic field's frequency in time precision measurements using single photons as a paradigmatic system. For such, we independently identify the con…
The Hong-Ou-Mandel experiment: from photon indistinguishability to continuous variables quantum computing
Nicolas Fabre, Maria Amanti, Florent Baboux +3
We extensively discuss the Hong-Ou-Mandel experiment taking an original phase-space-based perspective. For this, we analyze time and frequency variables as quantum continuous varia…
Producing delocalized frequency-time Schrödinger cat-like states with HOM interferometry
N. Fabre, J. Belhassen, A. Minneci +7
In the late 80's, Ou and Mandel experimentally observed signal beatings by performing a non-time resolved coincidence detection of two photons having interfered in a balanced beam…
Output squeezed radiation from dispersive ultrastrong light-matter coupling
S. Fedortchenko, S. Huppert, A. Vasanelli +6
We investigate the output generation of squeezed radiation of a cavity photon mode coupled to another off-resonant bosonic excitation. By modulating in time their linear interactio…
Quantum search with modular variables
A. Ketterer, T. Douce, A. Keller +2
We give a dimension independent formulation of the quantum search algorithm introduced in [L. K. Grover, Phys. Rev. Lett. {\bf 79}, 325 (1997)]. This algorithm provides a quadratic…
Quantum information with modular variables
A. Ketterer, S. P. Walborn, A. Keller +2
We introduce a novel strategy, based on the use of modular variables, to encode and deterministically process quantum information using states described by continuous variables. Ou…
Finite temperature reservoir engineering and entanglement dynamics
S. Fedortchenko, A. Keller, T. Coudreau +1
We propose experimental methods to engineer reservoirs at arbitrary temperature which are feasible with current technology. Our results generalize to mixed states the possibility o…
Quantum search with non--orthogonal entangled states
T. Douce, A. Ketterer, A. Keller +2
We propose a classical to quantum information encoding system using non--orthogonal states and apply it to the problem of searching an element in a quantum list. We show that the p…
Testing the Clauser-Horne-Shimony-Holt inequality using observables with arbitrary spectrum
A. Ketterer, A. Keller, T. Coudreau +1
The Clauser-Horne-Shimony and Holt inequality applies when measurements with binary outcomes are performed on physical systems under the assumption of local realism. Testing such i…
Continuous discretization of infinite dimensional Hilbert spaces
P. Vernaz-Gris, A. Ketterer, A. Keller +3
In quantum theory, observables with a continuous spectrum are known to be fundamentally different from those with a discrete and finite spectrum. While some fundamental tests and a…
Direct measurement of the biphoton Wigner function through two-photon interference
Tom Douce, Andreas Eckstein, Stephen P. Walborn +5
The Hong-Ou-Mandel (HOM) experiment was a benchmark in quantum optics, evidencing the quantum nature of the photon. In order to go deeper, and obtain the complete information about…
Bell states generation on a III-V semiconductor chip at room temperature
Adeline Orieux, Andreas Eckstein, Aristide Lemaître +7
We demonstrate the generation of polarization-entangled photon pairs at room temperature and telecom wavelength in a AlGaAs semiconductor waveguide. The source is based on spontane…