System und Verfahren zur Durchführung einer Quantenoperation auf einem Bosonischen Quantensystem

Details

Veröffentlichungs-Nr.

EP4749536

Anmeldetag

21. November 2024

Veröffentlichung

27. Mai 2026

Rechtsraum

EP

IPC

G06N10/40

Abstract

There is provided a system (1) for hosting a bosonic qubit, comprising a non-linear superconducting circuit (3) and a command circuit (5). The non-linear superconducting circuit (3) comprises: at least one resonant portion (9), and an asymmetrically threaded superconducting quantum interference device (ATS) (7) coupled to said at least one resonant portion (9), wherein the ATS (7) comprises a pair of Josephson junctions and an inductive element, wherein the pair of Josephson junctions and the inductor are galvanically connected in parallel such that each of the Josephson junctions respectively forms first and second superconducting loops with the inductive element, wherein the non-linear superconducting circuit has a first physical oscillatory mode for hosting the bosonic qubit, the first physical oscillatory mode having a first resonant frequency ωa The command circuit (5) comprises a first electromagnetic source (27) configured to thread the first superconducting loop with a first magnetic flux ϕ1 and the second superconducting loop with a second magnetic flux ϕ2 such that the ATS (7) is threaded with a differential flux ϕ Δ = ϕ 1 − ϕ 2 2 <img class="EMIRef" id="2503a146-0947-446e-be19-df91ae4aee18-ia01" /> in units of the superconducting flux quantum. The command circuit (5) is further configured to modulate the differential flux ϕΔ = ϕΔ (t) at a modulation frequency equal to the first resonant frequency ωa.

Anmelder

Firma

Alice & Bob

Land

🇫🇷 Frankreich

Fachgebiete