Abstract: The present disclosure relates to a new combiner/attenuator circuit that provides improved performance, specifically the combiner/attenuator circuit disclosed is capable of operating at a temperature of 4K and provides an improved frequency response and filtering.

Abstract: Quantum processing devices and methods for shuttling qubits between a pair of processing elements are disclosed. In particular, a disclosed method for shuttling a qubit from a first processing element to a second processing element in a quantum processing device comprising a plurality of processing elements, includes: applying an optimal bias configuration between the first processing element and the second processing element to shuttle the qubit from the first processing element to the second processing element in a manner that minimizes the time spent by the qubit in one or more state transition points between the first processing element and the second processing element.

Abstract: The present disclosure provides a quantum processing device comprising: one or more functional nanowires, each functional nanowire connected to at least one of a source and a drain; a sensing nanowire spaced from the one or more functional nanowires and connected to at least one of a source and a drain; one or more gate electrodes capacitively coupled with each of the one or more functional nanowires; one or more electrodes capacitively coupled with the sensing nanowire; and a floating coupler positioned between and electrostatically coupling the one or more functional nanowires and the sensing nanowire; and a controller connected to the one or more gates of the sensing nanowire and the one or more gates of the one or more functional nanowires.