| CPC G06N 10/40 (2022.01) | 20 Claims |
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1. A device, comprising:
a cable configured to transmit an input signal to a qubit, the input signal including comprising at least one qubit readout signal and at least one qubit control signal; and
a dual-multiplexer circuit located along the cable configured to selectively attenuate the at least one qubit readout signal, wherein the dual-multiplexer circuit comprises:
a first multiplexer and a second multiplexer coupled together by a group of wires, wherein the first multiplexer is configured to:
receive the input signal,
separate each qubit readout signal of the at least one qubit readout signal, and
separate each qubit control signal of the at least one qubit control signal;
for each qubit readout signal of the at least one qubit readout signal:
a respective first wire of the group of wires that couples a respective output of the first multiplexer associated with the qubit readout signal to a respective attenuator associated with the qubit readout signal, wherein the respective attenuator attenuates the qubit readout signal to generate a respective attenuated qubit readout signal, and
a respective second wire of the group of wires that couples the respective attenuator associated with the respective attenuated qubit readout signal to a respective input of the second multiplexer associated with the respective attenuated qubit readout signal; and
for each qubit control signal of the at least one qubit control signal, a respective third wire of the group of wires that couples a respective output of the first multiplexer associated with the qubit control signal to a respective input of the second multiplexer associated with the qubit control signal, wherein the respective third wire does not employ any attenuator for the qubit control signal, and
wherein the second multiplexer is configured to:
combine the qubit control signal with the respective modified qubit readout signal to output a modified input signal.
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