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 Publications:

Deep Neural Network Discrimination of Multiplexed Superconducting Qubit States
B. Lienhard, A. Vepsäläinen, L. C. G. Govia, C. R. Hoffer, J. Y. Qiu, D. Ristè, M. Ware, D. Kim, R. Winik, A. Melville, B. Niedzielski, J. Yoder, G. J. Ribeill, T. A. Ohki, H. K. Krovi, T. P. Orlando, S. Gustavsson, W. D. Oliver
arXiv:2102.12481 (2021)

Probing quantum information propagation with out-of-time-ordered correlators
J. Braumüller, A. H. Karamlou, Y. Yanay, B. Kannan, D. Kim, M. Kjaergaard, A. Melville, B. M. Niedzielski, Y. Sung, A. Vepsäläinen, R. Winik, J. L. Yoder, T. P. Orlando, S. Gustavsson, C. Tahan, W. D. Oliver
arXiv:2102.11751 (2021)

Error mitigation via stabilizer measurement emulation
A. Greene, M. Kjaergaard, M. E. Schwartz, G. O. Samach, A. Bengtsson, M. O’Keeffe, D. K. Kim, M. Marvian, A. Melville, B. M. Niedzielski, A. Vepsalainen, R. Winik, J. Yoder, D. Rosenberg, S. Lloyd, T. P. Orlando, I. Marvian, S. Gustavsson, W. D. Oliver
arXiv:2102.05767 (2021)

Multi-level quantum noise spectroscopy
Y. Sung, A. Vepsäläinen, J. Braumüller, F. Yan, J. I-J. Wang, M. Kjaergaard, R. Winik, P. Krantz, A. Bengtsson, A. J. Melville, B. M. Niedzielski, M. E. Schwartz, D. K. Kim, J. L. Yoder, T. P. Orlando, S. Gustavsson, W. D. Oliver
Nature Communications 12, 967 (2021) | arXiv:2003.02782 (2020)

Universal non-adiabatic control of small-gap superconducting qubits
D.L. Campbell, Y.-P. Shim, B. Kannan, R. Winik, D. K. Kim, A. Melville, B.M. Niedzielski, J. L. Yoder, C. Tahan, S. Gustavsson, W. D. Oliver
Phys. Rev.X 10, 041051(2020) | arXiv:2003.13154 (2020)