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Publication Citation: Multitone Waveform Synthesis with a Quantum Voltage Noise Source

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Author(s): Samuel P. Benz; Paul D. Dresselhaus; Charles J. Burroughs;
Title: Multitone Waveform Synthesis with a Quantum Voltage Noise Source
Published: November 09, 2010
Abstract: We have developed a quantum voltage noise source (QVNS) based on pulse-driven Josephson arrays and optimized its waveform synthesis for use with Johnson noise thermometry (JNT). The QVNS synthesizes multitone waveforms with equal amplitude harmonic tones and random relative phases in order to characterize the amplitude-frequency response of the analog and digital electronics of the JNT system. We describe the QVNS circuit design and operation, including the lumped-array Josephson-junction circuit and the unipolar bias technique. In particular, we describe the primary design considerations that determine the voltage accuracy of the harmonic tones.
Citation: IEEE Transactions on Applied Superconductivity
Volume: 21
Issue: 3
Pages: pp. 681 - 686
Keywords: Correlation, Digital-analog Conversion; Josephson Arrays; Johnson Noise; Quantization; Noise Measurement; Thermometry.
Research Areas: Quantum Electrical Measurements, Johnson Noise Thermometry, Quantum Devices
PDF version: PDF Document Click here to retrieve PDF version of paper (1MB)