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Single-sideband modulator for frequency domain multiplexing of superconducting qubit readout

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arxiv 1703.01693 v2 pith:Y4I57OI7 submitted 2017-03-06 quant-ph cond-mat.supr-con

Single-sideband modulator for frequency domain multiplexing of superconducting qubit readout

Benjamin J. Chapman , Eric I. Rosenthal , Joseph Kerckhoff , Leila R. Vale , Gene C. Hilton , K. W. Lehnert This is my paper
classification quant-ph cond-mat.supr-con
keywords frequencysuperconductingdevicedomainmicrowavemodulatormultiplexingqubit
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We introduce and experimentally characterize a superconducting single-sideband modulator compatible with cryogenic microwave circuits, and propose its use for frequency domain multiplexing of superconducting qubit readout. The monolithic single-quadrature modulators that comprise the device are formed with purely reactive elements (capacitors and Josephson junction inductors) and require no microwave-frequency control tones. Microwave signals in the 4 to 8 GHz band, with power up to -85 dBm, are converted up or down in frequency by as much as 120 MHz. Spurious harmonics in the device can be suppressed by up to 25 dB for select probe and modulation frequencies.

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