Quantum device with multiplexed electrometer output signals
US12248850B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 8, 2021 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Jul 23, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N10/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A quantum device includes several spin qubits arranged as a matrix and each comprising a quantum dot; several electrometers each electrostatically coupled to a potential well of one of the quantum dots; and circuits for applying an excitation signal to an input electrode of each electrometer. The circuits are configured such that a value of the frequency, phase or maximum amplitude of each excitation signal is different from that of the other excitation signals, and the circuits apply a same excitation signal on electrometers coupled to a same row of qubits. The device also includes a transimpedance amplifier having an input coupled to output electrodes of the electrometers and a demultiplexing circuit including an input electrically coupled to an output of the transimpedance amplifier and configured to demultiplex the output signals to be delivered by the electrometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.