US 12,462,178 B2
Electromagnetically insulated superconducting qubit device
Sébastien Jezouin, Paris (FR)
Assigned to ALICE & BOB, Paris (FR)
Filed by ALICE & BOB, Paris (FR)
Filed on Oct. 24, 2022, as Appl. No. 17/972,319.
Claims priority of application No. 2111275 (FR), filed on Oct. 22, 2021.
Prior Publication US 2023/0130939 A1, Apr. 27, 2023
Int. Cl. G06N 10/40 (2022.01)
CPC G06N 10/40 (2022.01) 13 Claims
OG exemplary drawing
 
1. An electromagnetically insulated superconducting qubit device comprising an electrical conductor having a substantially planar face and an artificial magnetic conductor having a substantially planar face facing the face of said electrical conductor, and one or more qubits made on or in one of said electrical conductor and said artificial magnetic conductor, the dimensions of the elements forming the artificial magnetic conductor and the distance separating the face of said electrical conductor and the face of said artificial magnetic conductor being chosen so as to make an electromagnetic band gap structure which comprises the frequencies of said qubits, the artificial magnetic conductor comprising a substantially planar electrically conductive base from which a plurality of projections project in a direction substantially orthogonal to the electrically conductive base together forming a bed of nails, and the distance separating the face of said electrical conductor and the base of said artificial magnetic conductor at the base of the projections being substantially less than the effective speed of light between the face of said artificial magnetic conductor and the face of said electrical conductor divided by twice the highest frequency among said one or more qubits.