Bias Voltage DAC Operating at Cryogenic Temperatures for Solid-State Qubit Applications

IEEE Solid-State Circuits Letters, vol. 3, pp. 218–221

Abstract

A scalable eight channel DAC designed in a TSMC 65-nm CMOS technology for generation of solid-state quantum bit (qubit) bias voltages is presented. Measurement results of the DAC and some additional auxiliary components like an on-chip amplifier and sigma-delta modulator at 6 K are discussed. With a low-power consumption of 2.7 μW per channel, the DAC fulfills the requirements to be placed next to qubits inside a mixing chamber of a dilution refrigerator, showing a promising way for scaling qubit numbers toward a quantum computer.

Authors 7

1. Patrick Vliex

   Forschungszentrum Jülich

   Affiliation as printed

   Central Institute of Engineering, Electronics and Analytics, Electronic Systems, Forschungszentrum Jülich GmbH, Jülich, Germany

2. C. Degenhardt

   Forschungszentrum Jülich

   Affiliation as printed

   Central Institute of Engineering, Electronics and Analytics, Electronic Systems, Forschungszentrum Jülich GmbH, Jülich, Germany

3. Christian Grewing

   Forschungszentrum Jülich

   Affiliation as printed

   Central Institute of Engineering, Electronics and Analytics, Electronic Systems, Forschungszentrum Jülich GmbH, Jülich, Germany

4. A. Kruth

   Forschungszentrum Jülich

   Affiliation as printed

   Central Institute of Engineering, Electronics and Analytics, Electronic Systems, Forschungszentrum Jülich GmbH, Jülich, Germany

5. Dennis Nielinger

   Forschungszentrum Jülich

   Affiliation as printed

   Central Institute of Engineering, Electronics and Analytics, Electronic Systems, Forschungszentrum Jülich GmbH, Jülich, Germany

6. Stefan van Waasen

   Forschungszentrum Jülich · University of Duisburg-Essen

   Affiliation as printed

   Central Institute of Engineering, Electronics and Analytics, Electronic Systems, Forschungszentrum Jülich GmbH, Jülich, Germany

   Faculty of Engineering, Communication Systems, University of Duisburg-Essen, Duisburg, Germany

7. Stefan J. Heinen Aachen Chair of Integrated Analog Circuits and RF Systems

   RWTH Aachen University

   Affiliation as printed

   Chair of Integrated Analog Circuits and RF Systems, RWTH Aachen University, Aachen, Germany