Quantum Materials

Integrating van der Waals materials with superconducting qubits and cavity QED

Quantum Gates

Tunable coupler enabling two-qubit gates approaching 99.9% fidelity

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 Hollywood Squares

High-connectivity in the age of online group meetings

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 Systems

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

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:

Dissipative Landau-Zener tunneling: crossover from weak to strong environment coupling
X. Dai, R. Trappen, H. Chen, D. Melanson, M. A. Yurtalan, D. M. Tennant, A. J. Martinez, Y. Tang, E. Mozgunov, J. Gibson, J. A. Grover, S. M. Disseler, J. I. Basham, S. Novikov, R. Das, A. J. Melville, B. M. Niedzielski, C. F. Hirjibehedin, K. Serniak, S. J. Weber, J. L. Yoder, W. D. Oliver, K. M. Zick, D. A. Lidar, A. Lupascu
arXiv:2207.02017 (2022)

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
Nature Communications 13, 1932 (2022) | arXiv:2105.01107 (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
Nat. Phys. 18, 172-178 (2022) | arXiv:2102.11751 (2021)
See also: News and Views by Arghavan Safavi-Naini

Demonstration of tunable three-body interactions between superconducting qubits
T. Menke, W. P. Banner, T. R. Bergamaschi, A. Di Paolo, A. Vepsäläinen, S. J. Weber, R. Winik, A. Melville, B. M. Niedzielski, D. Rosenberg, K. Serniak, M. E. Schwartz, J. L. Yoder, A. Aspuru-Guzik, S. Gustavsson, J. A. Grover, C. F. Hirjibehedin, A. J. Kerman, W. D. Oliver
arXiv:2205.04542 (2022)

Extensible circuit-QED architecture via amplitude- and frequency-variable microwaves
A. Di Paolo, C. Leroux, T. M. Hazard, K. Serniak, S. Gustavsson, A. Blais, W. D. Oliver
arXiv:2204.08098 (2022)