Jean Etesse
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Multipartite quantum correlated bright frequency combs Open
This experimental work demonstrates multipartite quantum correlation in bright frequency combs out of a microresonator integrated on silicon nitride operating above its oscillation threshold. Multipartite features, going beyond so far repo…
View article: Decoherence induced by dipole-dipole couplings between atomic species in\n rare-earth ion-doped Y$_2$SiO$_5$
Decoherence induced by dipole-dipole couplings between atomic species in\n rare-earth ion-doped Y$_2$SiO$_5$ Open
Rare-earth ion doped crystals are state-of-the-art platforms for processing\nquantum information, particularly thanks to their excellent optical and spin\ncoherence properties at cryogenic temperatures. Experimental observations have\nshow…
Integrated Photonics for Quantum Communications and Metrology Open
Over the last two decades, integrated photonics has profoundly revolutionized the domain of quantum technologies. The ongoing second quantum revolution stands as a timely opportunity for a state-of-the-art review and, most important, an ex…
Multipartite Entanglement in Bright Frequency Combs from Microresonators Open
We present a theoretical model of multimode quantum correlations in bright frequency combs generated in continuous-wave regime by microresonators above threshold. Our analysis shows how these correlations emerge from cascading four-wave mi…
A multiplexed synthesizer for non-Gaussian photonic quantum state generation Open
Disposing of simple and efficient sources for photonic states with non-classical photon statistics is of paramount importance for implementing quantum computation and communication protocols. In this work, we propose an innovative approach…
Proposal for spin squeezing in rare-earth-ion-doped crystals with a four-color scheme Open
International audience
Plug-and-play generation of non-Gaussian states of light at a telecom wavelength Open
In the context of emerging quantum technologies, this work marks an important progress towards practical quantum optical systems in the continuous variable regime. It shows the feasibility of experiments where non-Gaussian state generation…
Proposal for spin squeezing in rare-earth ion-doped crystals with a four-color scheme Open
Achieving spin squeezing within solid-state devices is a long standing research goal, due to the promise of their particularities, for instance their long coherence times, the possibility of low-temperature experiments or integration of en…
Hidden and detectable squeezing from micro-resonators Open
In the context of quantum integrated photonics, this work investigates the quantum properties of light generated by silicon and silicon nitride micro-resonators pumped in pulsed regime. The developed theoretical model, performed in terms o…
Plug-&-play generation of non-Gaussian states of light at a telecom wavelength Open
This work marks an important progress towards practical quantum optical technologies in the continuous variable regime, as it shows the feasibility of experiments where non-Gaussian state generation entirely relies on plug-&-play component…
Theoretical framework for photon subtraction with non–mode-selective resources Open
This work establishes a versatile theoretical framework that explicitly\ndescribes single-photon subtraction from multimode quantum light in the context\nof non-Gaussian state generation and manipulation. The treatment focuses on\neasy-to-…
A flexible theoretical framework to describe multimode photon-subtraction Open
This work establishes a versatile theoretical framework that explicitly describes non-Gaussian states that are obtained, in an heralded fashion, by applying a single-photon subtraction to a multimode resource. The treatment focuses on the …
Optical and spin manipulation of non-Kramers rare-earth ions in a weak magnetic field for quantum memory applications Open
Rare-earth ion doped crystals have proven to be solid platforms for implementing quantum memories. Their potential use for integrated photonics with large multiplexing capability and unprecedented coherence times is at the core of their at…
Optical storage for 0.53 s in a solid-state atomic frequency comb memory using dynamical decoupling Open
Quantum memories with long storage times are key elements in long-distance quantum networks. The atomic frequency comb (AFC) memory in particular has shown great promise to fulfill this role, having demonstrated multimode capacity and spin…
Multimode and Long-Lived Quantum Correlations Between Photons and Spins in a Crystal Open
The realization of quantum networks and quantum repeaters remains an outstanding challenge in quantum communication. These rely on the entanglement of remote matter systems, which in turn requires the creation of quantum correlations betwe…
Towards highly multimode optical quantum memory for quantum repeaters Open
Long-distance quantum communication through optical fibers is currently limited to a few hundreds of kilometres due to fiber losses. Quantum repeaters could extend this limit to continental distances. Most approaches to quantum repeaters r…