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    • 4. 发明公开
    • QUANTUM DEVICE, QUANTUM BIT READOUT DEVICE, AND ELECTRONIC CIRCUIT
    • EP4361902A1
    • 2024-05-01
    • EP22828353.7
    • 2022-06-17
    • Teikyo University
    • TANAMOTO, Tetsufumi
    • G06N10/40
    • G06N10/40
    • A difference between a state of a first quantum bit and a state of a second quantum bit is accurately determined by comparing a signal obtained by amplifying a signal indicating the state of the first quantum bit with a signal obtained by amplifying a signal indicating the state of the second quantum bit, and specifically, an input signal inverted with respect to an input signal of a first quantum circuit is set to an input signal of a second quantum circuit such that an output of the first quantum circuit and an output of the second quantum circuit are inverted between logical values of 0 and 1 through a determination unit, so that an accuracy rate of readout of a state of a quantum bit is improved. A quantum device includes a first quantum circuit, a second quantum circuit, and a latch circuit connected to the first quantum circuit and the second quantum circuit, in which the latch circuit has a function of latching a state of a first quantum bit output from the first quantum circuit and amplifying a signal indicating the state of the first quantum bit, and a function of latching a state of a second quantum bit output from the second quantum circuit and amplifying a signal indicating the state of the second quantum bit.