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You searched on: Topic Area: Quantum Electrical Measurements Sorted by: title

Displaying records 31 to 40 of 47 records.
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31. Method for Ensuring Accurate AC Waveforms with Programmable Josephson Voltage Standards
Topic: Quantum Electrical Measurements
Published: 7/1/2012
Authors: Charles J Burroughs, Alain Rufenacht, Samuel Paul Benz, Paul David Dresselhaus
Abstract: The amplitudes of stepwise-approximated sine waves produced by programmable Josephson voltage standards (PJVSs) are not intrinsically accurate because the transitions between the quantized voltages depend on numerous conditions. We have developed a m ...

32. Millimeter Wave Detection via Autler-Townes Splitting in Rubidium Rydberg Atoms
Topic: Quantum Electrical Measurements
Published: 7/17/2014
Authors: Joshua A Gordon, Christopher L Holloway, Andrew Schwarzkopf, Dave Anderson, Stephanie Miller, Nithiwadee Thaicharoen, Georg Raithel
Abstract: In this paper we demonstrate the detection of millimeter waves via Autler-Townes splitting in 85Rb Rydberg atoms. This method may provide an independent atomic-based SI-traceable method for measuring mm-wave electric fi elds, which addresses a gap in ...

33. NIST 10 V Programmable Josephson Voltage Standard System Using a Low Capacity Cryocooler
Topic: Quantum Electrical Measurements
Published: 11/6/2014
Authors: Logan A. Howe, Anna E Fox, Alain Rufenacht, Charles J Burroughs, Paul David Dresselhaus, Samuel Paul Benz, Robert E Schwall
Abstract: Rising costs of and difficulty in obtaining liquid helium in many areas of the world provides strong motivation for cryogen-free operation of superconducting devices such as NIST Programmable Josephson Voltage Standard (PJVS) systems. However, op ...

34. Nonlinear Behavior of Electronic Components Characterized with Precision Multitones from a Josephson Arbitrary Waveform Synthesizer
Topic: Quantum Electrical Measurements
Published: 6/3/2009
Authors: Samuel Paul Benz, Ryan C. Toonen
Abstract: We have extended the application of quantum-based electrical standards from single frequency calibrations to multi-tone tests that can be used to characterize the nonlinear behavior of electronic components and circuits. Specifically, we have used a ...

35. Operating Margins for a Pulse-Driven Josephson Arbitrary Waveform Synthesizer Using a Ternary Bit-Stream Generator
Topic: Quantum Electrical Measurements
Published: 4/1/2009
Authors: Ernest Houtzager, Samuel Paul Benz, Helko vanden Brom
Abstract: We describe measurements with a pulse-driven Josephson arbitrary waveform synthesizer (JAWS) that uses a ternary arbitrary bit-stream generator as the bias source. This system is meant to be used as an AC Josephson voltage standard (ACJVS). From thes ...

36. Operating Margins for a Superconducting Voltage Waveform Synthesizer
Topic: Quantum Electrical Measurements
Published: 6/1/1999
Authors: Samuel Paul Benz, Clark A. Hamilton, Charles J Burroughs
Abstract: Operating margins for biolar superconducting voltage waveform synthesizer were measured. Current ranges were determined for 101 equally spaced dc voltage steps between - 18.6 and + 18.6 mV. The measured voltages of these steps deviated from the exp ...

37. Performance Improvements for the NIST 1 V Josephson arbitrary waveform synthesizer
Topic: Quantum Electrical Measurements
Published: 11/10/2014
Authors: Samuel Paul Benz, Steven Beyer Waltman, Anna E Fox, Paul David Dresselhaus, Alain Rufenacht, Logan A. Howe, Robert E Schwall, Nathan E Flowers-Jacobs
Abstract: The performance of the NIST Josephson arbitrary waveform synthesizer has been improved such that it generates a root-mean-square (RMS) output voltage of 1 V with an operating current range greater than 2 mA. Our previous 1 V JAWS circuit achieved ...

38. Precision Differential Sampling Measurements of Low-Frequency Voltages Synthesized with an AC Programmable Josephson Voltage Standard
Topic: Quantum Electrical Measurements
Published: 6/9/2008
Authors: Alain Rufenacht, Charles J Burroughs, Samuel Paul Benz, Paul David Dresselhaus, Bryan C Waltrip, Thomas L Nelson
Abstract: Sampling is a promising technique to compare the stepwise-approximated sine waves synthesized by an AC Programmable Josephson Voltage Standard to the sinusoidal voltages of a secondary source at low frequencies (a few hundred Hz or less). This paper ...

39. Preparation of Non-equilibrium Nuclear Spin States in Double Quantum Dots
Topic: Quantum Electrical Measurements
Published: 7/15/2013
Authors: Jacob M Taylor, Michael Gullans, Jacob J Krich, Bertrand I Halperin, M D Lukin
Abstract: We theoretically study the dynamic polarization of lattice nuclear spins in GaAs double quantum dots containing two electrons. We introduce a semiclassical model that allows to explore a wide range of parameter regimes in this system. We identify thr ...

40. Progress Toward an AC Josephson Voltage Standard
Topic: Quantum Electrical Measurements
Published: 6/1/1996
Authors: Clark A. Hamilton, Charles J Burroughs, Samuel Paul Benz
Abstract: Progress toward a Josephson voltage standrd for fast dc measurements and ac waveform synthesis is described, including a version with SNS junctions operated at 11 GHz. A bias control circuit that achieves millampere drive capability, transient suppr ...

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