Quantum Microwaves

Single-mode and two-mode squeezed microwave photons using a traveling wave parametric amplifier

Quantum Chirality

On-demand directional microwave photon emission using waveguide quantum electrodynamics

Quantum by Design

Engineering three-body electromagnetic interactions using superconducting circuits for multiqubit gates

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 Workforce

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

Quantum Hollywood Squares

High-connectivity in the age of online group meetings

Quantum Engineering

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

Quantum Circuits

Integrated quantum circuits fabricated on 200 mm silicon wafers

Quantum Interference

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

Quantum-Limited Amplifiers

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

Quantum Control

Controlling quantum systems with microwave pulses

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 News:

3/5/2023 – 3/10/2023 -EQuS attends APS March Meeting 2023 | Las Vegas, Nevada

1/22/23 – 1/23/2023 – EQuS attends QuARC 2023

02/12/2023 – Jack, Arne (U. Syd., presently AWS), Kaidong (Kevin O’Brien group) and collaborators’ manuscript, “Broadband squeezed microwaves and amplification with a Josephson travelling-wave parametric amplifier,” was published in Nature Physics

01/05/2023 – Bharath, Aziza, and collaborators’ manuscript, “On-demand directional microwave photon emission using waveguide quantum electrodynamics,” was published in Nature Physics

12/13/2022 – EQuS Alum Sihao Huang awarded 2023 Marshall Scholarship

 

Recent Publications:

Learning-based Calibration of Flux Crosstalk in Transmon Qubit Arrays
C. N. Barrett, A. H. Karamlou, S. E. Muschinske, I. T. Rosen, J. Braumüller, R. Das, D. K. Kim, B. M. Niedzielski, M. Schuldt, K. Serniak, M. E. Schwartz, J. L. Yoder, T. P. Orlando, S. Gustavsson, J. A. Grover, W. D. Oliver
arXiv:2303.03347 (2023)

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
Phys. Rev. Applied 18, 064056 (2022) | arXiv:2105.02338 (2021)

Broadband squeezed microwaves and amplification with a Josephson traveling-wave parametric amplifier
J. Y. Qiu, A. Grimsmo, K. Peng, B. Kannan, B. Lienhard, Y. Sung, P. Krantz, V. Bolkhovsky, G. Calusine, D. Kim, A. Melville, B. M. Niedzielski, J. Yoder, M. E. Schwartz, T. P. Orlando, I. Siddiqi, S. Gustavsson, K. P. O’Brien, W. D. Oliver
Nature Physics (2023) | arXiv:2201.11261 (2022)
See also: Press Release from MIT News Office

Evolution of 1/f Flux Noise in Superconducting Qubits with Weak Magnetic Fields
D. Rower, L. Ateshian, L. Li, M. Hays, D. Bluvstein, L. Ding, B. Kannan, A. Almanakly, J. Braumüller, D. Kim, A. Melville, B.. Niedzielski, M. Schwartz, J. Yoder, T. Orlando, J. Wang, S. Gustavsson, J. Grover, K. Serniak, R. Comin, W. D. Oliver
arXiv:2301.07804 (2023)

On-demand directional microwave photon emission using waveguide quantum electrodynamics
B. Kannan, A. Almanakly, Y. Sung, A. Paolo, D.. Rower, J. Braumüller, A. Melville, B. Niedzielski, A. Karamlou, K. Serniak, A. Vepsäläinen, M. Schwartz, J. Yoder, R. Winik, J. Wang, T. Orlando, S. Gustavsson, J. Grover, W. D. Oliver
Nature Physics 57 (2023) | arXiv:2203.01430 (2022)