Evidence of dual Shapiro steps in a Josephson junctions array

Autor: Nicolò Crescini, Samuel Cailleaux, Wiebke Guichard, Cécile Naud, Olivier Buisson, Kater W. Murch, Nicolas Roch

The modern primary voltage standard is based on the AC Josephson effect and the ensuing Shapiro steps, where a microwave tone applied to a Josephson junction yields a constant voltage $hf/2e$ ($h$ is Planck's constant and $e$ the electron charge) det

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb3b7e350228384dd0aafd0bd8e530ef
http://arxiv.org/abs/2207.09381

Observation of two-mode squeezing in a traveling wave parametric amplifier

Autor: Martina Esposito, Arpit Ranadive, Luca Planat, Sébastien Leger, Dorian Fraudet, Vincent Jouanny, Olivier Buisson, Wiebke Guichard, Cécile Naud, José Aumentado, Florent Lecocq, Nicolas Roch

Publikováno v: Phys. Rev. Lett.

Traveling wave parametric amplifiers (TWPAs) have recently emerged as essential tools for broadband near quantum-limited amplification. However, their use to generate microwave quantum states still misses an experimental demonstration. In this letter

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d23716485847f08ca2930e84bd4c08ed

Epitaxial rhenium microwave resonators

Autor: B. Küng, Klaus Hasselbach, B Delsol, Christophe Hoarau, Cécile Naud, Kitti Ratter, Thomas Weissl, Olivier Buisson, Wiebke Guichard, Etienne Dumur, Bruno Gilles

Publikováno v: IEEE Transactions on Applied Superconductivity
IEEE Transactions on Applied Superconductivity, Institute of Electrical and Electronics Engineers, 2016, 26 (3), pp.1501304. ⟨10.1109/TASC.2016.2547221⟩

International audience; We have fabricated rhenium microwave resonators from epitaxial films. We have used thin films of different structural quality depending on their growth conditions. The resonators were coupled to a microwave transmission line w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b1a8310db66ccb9493f4abb65291c0f
https://hal.archives-ouvertes.fr/hal-01311800/document

Quantum dynamics of superconducting nano-circuits: phase qubit, charge qubit and rhombi chains

Autor: Laurent P. Lévy, Aurelien Fay, Frank W. J. Hekking, Z. H. Peng, Emile Hoskinson, I. M. Pop, Nicolas Didier, Florent Lecocq, Bernard Pannetier, Wiebke Guichard, R. Dolata, Alexander B. Zorin, Olivier Buisson

Publikováno v: Quantum Information Processing
Quantum Information Processing, Springer Verlag, 2009, 8, pp.155-182. ⟨10.1007/s11128-009-0094-0⟩

We have studied different quantum dynamics of superconducting nano-circuits with Josephson junctions. A dc SQUID, when it is strongly decoupled from the environment, demonstrates two-level and multilevel dynamics. We have realized a two qubits couple

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12319a207ccd13ae55df46ef445b5f3b
https://doi.org/10.1007/s11128-009-0094-0

A V-shape superconducting artificial atom based on two inductively coupled transmons

Autor: Cécile Naud, Olivier Buisson, Wiebke Guichard, B. Küng, Etienne Dumur, A. K. Feofanov, Nicolas Roch, T. Weissl

Publikováno v: Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2015, 92 (2), pp.020515(R). ⟨10.1103/PhysRevB.92.020515⟩

Circuit quantum electrodynamics systems are typically built from resonators and two-level artificial atoms, but the use of multi-level artificial atoms instead can enable promising applications in quantum technology. Here we present an implementation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::acf71f57c571a1a321d12fbf7253d224