Patents by Inventor Loïck LE GUEVEL

Loïck LE GUEVEL has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Spin qubit quantum device read by impedance measurement
    Patent number: 11387828
    Abstract: A spin qubit quantum device including: a data qubit and a measurement qubit made in a semiconducting layer and coupled to each other by a tunnel junction made in the semiconducting layer, each of which comprising a quantum dot and a control gate; an inductor coupled to the gate of one of the qubits or to another gate capacitively coupled to one of the qubits, the inductor, and a capacitor formed by said gate forming an LC circuit; a first input terminal coupled to the LC circuit and receiving a periodic control voltage of frequency fr substantially equal to the resonant frequency of the LC circuit; a voltage amplifier comprising an input coupled to the gate to which the inductor is coupled; an output terminal coupled to an output of the amplifier.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: July 12, 2022
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Loïck Le Guevel, Gérard Billiot, Aloysius Jansen, Gaël Pillonnet
  • SPIN QUBIT QUANTUM DEVICE READ BY IMPEDANCE MEASUREMENT
    Publication number: 20210184673
    Abstract: A spin qubit quantum device including: a data qubit and a measurement qubit made in a semiconducting layer and coupled to each other by a tunnel junction made in the semiconducting layer, each of which comprising a quantum dot and a control gate; an inductor coupled to the gate of one of the qubits or to another gate capacitively coupled to one of the qubits, the inductor, and a capacitor formed by said gate forming an LC circuit; a first input terminal coupled to the LC circuit and receiving a periodic control voltage of frequency fr substantially equal to the resonant frequency of the LC circuit; a voltage amplifier comprising an input coupled to the gate to which the inductor is coupled; an output terminal coupled to an output of the amplifier.
    Type: Application
    Filed: December 14, 2020
    Publication date: June 17, 2021
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Loïck LE GUEVEL, Gérard BILLIOT, Aloysius JANSEN, Gaël PILLONNET