Autoparametric resonance extending the bit-flip time of a cat qubit up to 0.3 s

Autor: Marquet, Antoine, Essig, Antoine, Cohen, Joachim, Cottet, Nathanaël, Murani, Anil, Albertinale, Emanuele, Dupouy, Simon, Bienfait, Audrey, Peronnin, Théau, Jezouin, Sébastien, Lescanne, Raphaël, Huard, Benjamin

Publikováno v: Phys. Rev. X 14, 021019 (2024)

Cat qubits, for which logical $|0\rangle$ and $|1\rangle$ are coherent states $|\pm\alpha\rangle$ of a harmonic mode, offer a promising route towards quantum error correction. Using dissipation to our advantage so that photon pairs of the harmonic mo

Externí odkaz: http://arxiv.org/abs/2307.06761

Electron shelving of a superconducting artificial atom

Autor: Cottet, Nathanaël, Xiong, Haonan, Nguyen, Long B., Lin, Yen-Hsiang, Manucharyan, Vladimir E.

Interfacing stationary qubits with propagating photons is a fundamental problem in quantum technology. Cavity quantum electrodynamics (CQED) invokes a mediator degree of freedom in the form of a far-detuned cavity mode, the adaptation of which to sup

Externí odkaz: http://arxiv.org/abs/2008.02423

Maxwell's demon in superconducting circuits

Autor: Cottet, Nathanaël, Huard, Benjamin

This paper provides an overview of the first experimental realizations of quantum-mechanical Maxwell's demons based on superconducting circuits. The principal results of these experiments are recalled and put into context. We highlight the versatilit

Externí odkaz: http://arxiv.org/abs/1805.01224

Encoding quantum information in states of light: How can photonics light the way and play a key role in quantum computing?

Autor: COTTET, NATHANAËL¹ contact@alice-bob.com

Publikováno v: Laser Focus World. Dec2023, Vol. 59 Issue 12, p22-25. 4p.

Multiplexed Photon Number Measurement

Autor: Essig, Antoine, Ficheux, Quentin, Peronnin, Théau, Cottet, Nathanaël, Lescanne, Raphaël, Sarlette, Alain, Rouchon, Pierre, Leghtas, Zaki, Huard, Benjamin

Publikováno v: Physical Review X, Vol 11, Iss 3, p 031045 (2021)
Physical Review X
Physical Review X, 2021, 11 (3), ⟨10.1103/PhysRevX.11.031045⟩
Physical Review X, American Physical Society, 2021, 11 (3), ⟨10.1103/PhysRevX.11.031045⟩
PHYSICAL REVIEW X

When a two-level system -- a qubit -- is used as a probe of a larger system, it naturally leads to answering a single yes-no question about the system state. Here we propose a method where a single qubit is able to extract, not a single, but many bit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51cd03fd860ea310cf6e3832876a3ba7
https://doaj.org/article/3e700cf2399b4304a50e476d0568c7de