CNRS- Néel Institute

Nicolas Roch

Nicolas Roch is a permanent staff researcher at CNRS-Néel Institut. He obtained his Ph.D. at University of Grenoble in 2010 and worked at Ecole Normal Supérieure (ENS) under the supervision of B. Huard and M. Devoret from 2010 to 2012 and at UC Berkeley under the supervision of I. Siddiqi from 2012-2013 as Post Doc. He was among the firsts to design, build and operate quantum-limited Josephson parametric amplifiers and to integrate them into microwave measurement chains for advanced quantum experiments.

His main research interests are now focused on quantum simulation in circuitQED, quantum-limited parametric amplifiers, Josephson junction meta-materials for high impedance quantum circuits and QND measurement in quantum mechanics.

Nicolas can be reached at: nicolas.roch@neel.cnrs.fr

You can also find Nicolas on: Google Scholar

Martina Esposito

Between Oct 2019 and Sept 2021 Martina was a postdoc at Neel Institute - CNRS in Grenoble where she contributed to the development of TWPA devices for the AVaQus project. Since Oct 2021, she is a permanent researcher at the Italian National Research Council, CNR, in Naples. Formerly, she worked as a postdoctoral research assistant at Oxford University (UK) 2017-2019 and earned a Ph.D. in Physics at the University of Trieste (Italy) in 2016.

Martina’s research focuses on superconducting quantum circuits, specifically Josephson meta-materials, for microwave photonics experiments.

Martina can be reached at: martina.esposito@spin.cnr.it

You can also find Martina on: LinkedIn, Twitter

Arpit Ranadive

Arpit is working on his doctoral thesis on nonlinear quantum optics using Josephson metamaterials, under supervision of Dr. Nicolas Roch at Institut Neel (CNRS) in Grenoble.

He is part of the team working on development of broadband parametric amplifiers for AVaQus.

Arpit can be reached at: arpit.ranadive@neel.cnrs.fr

You can also find Arpit on: Google Scholar, LinkedIn, Twitter

Luca Planat

Luca started his PhD in experimental physics in 2016 at the Institut Néel in Grenoble, France, under the supervision of Prof. Wiebke Guichard and Dr. Nicolas Roch, and graduated in June 2020.

During his PhD, he mainly worked on parametric amplification with Josephson junctions. He first developed resonant Josephson parametric amplifiers (JPA) and thereafter designed, developed and characterised Josephson traveling-wave parametric amplifiers (TWPA). These Josephson amplifiers are necessary to reach high fidelity superconducting qubit readout. Together with Arpit Ranadive, Martina Esposito and Giulio Cappelli, he fabricated, characterised and shipped Josephson TWPAs to the members of the AVaQus consortium.

After a one-year postdoctoral contract at the Institut Néel, he is now currently co-funding with Nicolas Roch and Baptiste Planat a startup, Silent Waves, that aims to provide Josephson TWPAs to the quantum computing community.

Luca can be reached at: luca.planat@neel.cnrs.fr

Giulio Capelli

Giulio obtained both his B.Sc. and M.Sc. in Physics at the University of Pisa, Pisa, Italy.

During his master he worked in the Scanning Gate Microscopy Lab led by Dr. Stefan Heun at the Laboratorio NEST in Pisa on planar superconducting/semiconducting junctions with 2D materials.

In September 2021 I joined the QuantECA team at the Neel Institute in Grenoble, France, as a PhD student in the group led by Dr. Nicolas Roch. Within the AVaQus project, his work is focused on the development of broadband Travelling Wave Parametric Amplifiers (TWPAs) and Travelling Wave Single Photon Detectors (TWSPDs) using Josephson metamaterials.

Giulio can be reached at: giulio.capelli@neel.cnrs.fr