US 12,406,199 B2
Quantum device
Adrien Morel, Grenoble (FR); and Franck Badets, Grenoble (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed on Sep. 1, 2022, as Appl. No. 17/901,623.
Claims priority of application No. 2109709 (FR), filed on Sep. 16, 2021.
Prior Publication US 2023/0080817 A1, Mar. 16, 2023
Int. Cl. G06N 10/40 (2022.01)
CPC G06N 10/40 (2022.01) 15 Claims
OG exemplary drawing
 
1. A quantum device comprising:
multiple spin qubits, each comprising at least one quantum dot,
multiple electrometers, each being capacitively coupled to a potential well of the at least one quantum dot of at least one of the spin qubits, and
multiple injection-locked oscillators, each being coupled to at least one electrode of one of the electrometers and designed to transmit an oscillating signal, called an excitation signal, to at least one input electrode of the electrometer to which it is coupled, each excitation signal having a different frequency,
further comprising:
an amplification circuit comprising at least one amplifier, said amplification circuit being coupled to the output of each electrometer and comprising an output,
and in that said device comprises a feedback loop coupling the output of said amplification circuit to an input of each injection-locked oscillator and through which an electrical signal, called an injection signal, flows, comprising components at the frequencies of said excitation signals, each injection-locked oscillator being designed to receive the injection signal and, as a function of said injection signal, keep its excitation signal in a first operating state or decrease its excitation signal to a second operating state.