Quantum Optics

Engineering quantum interference to protect giant artificial atoms coupled to open waveguides

Quantum Engineering

24-pin package routing input/output signals that control a quantum processor

Quantum-Limited Amplifiers

Near-quantum-limited traveling wave parametric amplifiers (TWPAs)

Quantum Workforce

Vibrant team of post docs, graduate students, and undergraduate researchers

Quantum Systems

Engineering physics in the pursuit of coherent quantum systems and extensible technologies

Quantum Circuits

Integrated quantum circuits fabricated on 200 mm silicon wafers

Quantum Control

Controlling quantum systems with microwave pulses

Quantum Interference

Landau-Zener-Stueckelberg quantum interference realized with superconducting qubits.

Quantum Hollywood Squares

High-connectivity in the age of online group meetings

Mission:

We are a diverse team of physicists and engineers working together to understand, design, manufacture, and control coherent quantum systems comprising superconducting artificial atoms (qubits) for quantum information science and technology applications. Our efforts span fundamental research to applied physics and systems engineering.

Recent News:

5/4/2021 – Postdoctoral Associate Patrick Harrington awarded IC Postdoctoral Research Fellowship

4/16/2021 – Sihao’s manuscript “Microwave Package Design for Superconducting Quantum Processors” published in PRX Quantum.

4/14/2021 – Professor William D. Oliver awarded 2021 Thornton Family Faculty Research Innovation Fellowship (FRIF)

4/13/2021 – Aziza Almanakly awarded 2021 Paul and Daisy Soros Fellowship

3/11/2021 – Tim’s manuscript “Automated design of superconducting circuits and its application to 4-local couplers” published in npj Quantum Information

Recent Publications:

Lindblad Tomography of a Superconducting Quantum Processor
G. O. Samach, A. Greene, J. Borregaard, M. Christandl, D. K. Kim, C. M. McNally, A. Melville, B. M. Niedzielski, Y. Sung, D. Rosenberg, M. E. Schwartz, J. L. Yoder, T. P. Orlando, J. I-J. Wang, S. Gustavsson, M. Kjaergaard, W. D. Oliver
arXiv:2105.02338 (2021)

Improving qubit coherence using closed-loop feedback
A. Vepsäläinen, R. Winik, A. H. Karamlou, J. Braumüller, A. Di Paolo, Y. Sung, B. Kannan, M. Kjaergaard, D. K. Kim, A. J. Melville, B. M. Niedzielski, J. L. Yoder, S. Gustavsson, W. D. Oliver
arXiv:2105.01107 (2021)

Microwave package design for superconducting quantum processors
S. Huang, B. Lienhard, G. Calusine, A. Vepsäläinen, J. Braumüller, D. K. Kim, A. J. Melville, B. M. Niedzielski, J. L. Yoder, B. Kannan, T. P. Orlando, S. Gustavsson, W. D. Oliver
PRX Quantum 2, 020306 (2021) | arXiv:2012.01438 (2020)

Fabrication of superconducting through-silicon vias
J. L. Mallek, D. W. Yost, D. Rosenberg, J. L. Yoder, G. Calusine, M. Cook, R. Das, A. Day, E. Golden, D. K. Kim, J. Knecht, B. M. Niedzielski, M. Schwartz, A. Sevi, C. Stull, W. Woods, A. J. Kerman, W. D. Oliver
arXiv:2103.08536 (2021)

Automated design of superconducting circuits and its application to 4-local couplers
T. Menke, F. Häse, S. Gustavsson, A. J. Kerman, W. D. Oliver, A. Aspuru-Guzik
npj Quantum Information 7, 49 (2021) |arXiv:1912.03322 (2019)