Quantensystem mit einer Gleichstromspannungsquelle zur Stabilisierung eines Katzen-Qubit

Details

Veröffentlichungs-Nr.

EP4542455

Aktenzeichen

EP23306839

Anmeldetag

19. Oktober 2023

Veröffentlichung

23. April 2025

Rechtsraum

EP

IPC

G06N10/40

Abstract

The invention relates to a quantum system (1) for stabilizing a cat qubit comprising: - a command circuit (5) including a microwave source (11) and a DC voltage source (13), and - a non-linear superconducting quantum circuit (3) including a non-linear element (7) comprising a Josephson junction, a first and a second resonant portions respectively having a first mode with a first resonant frequency fa and a second mode with a second resonant frequency fb. The non-linear superconducting quantum circuit (3) stabilizes a two-dimensional manifold hosting the cat qubit when: • the microwave source (11) delivers microwave radiation at a frequency equal to fb to the second resonant portion to drive the second mode, and • the DC voltage source (13) delivers DC voltage to bias the non-linear element (7), with the delivered DC voltage having a value inducing a microwave oscillation having a frequency equal to |2fa - fb|.

Anmelder

Firmen

Alice & Bob
INRIA - Institut National de Recherche en Informatique et en Automatique

Land

🇫🇷 Frankreich

Fachgebiete