Quantum Emulation

Flat-Band (De)localization Emulated with a Superconducting Qubit Array

Quantum Interconnect

Emitting and absorbing directional microwave photons to generate remote entanglement

Quantum Transport

Creating synthetic electromagnetic fields to emulate the dynamics of charged particles in a 16-qubit lattice

Quantum Geometry

Investigating quantum geometry and unconventional superconductivity using cQED platforms

Quantum Gates

High-fidelity two-qubit gates exceeding 99.9% with fluxonium qubits

Quantum Entanglement

Characterizing volume-law and area-law entanglement in a 16-qubit processor

Quantum Chirality

On-demand directional microwave photon emission using waveguide quantum electrodynamics

Quantum Microwaves

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

Quantum Materials

Integrating van der Waals materials with superconducting qubits and cavity QED

Quantum by Design

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

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 Systems

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

Quantum Control

Controlling quantum systems with microwave pulses

Mission:

We are a creative 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:

9/24/2026 – Andy and collaborators’ manuscript, “Frequency- and amplitude-modulated gates for universal quantum control,” was published in PRX Quantum!

8/12/2026 – Hannah, Hailey, and collaborators’ manuscript, “Distinguishing types of correlated errors in superconducting qubits,” was published as an Editors’ Suggestion in Physical Review Applied!

8/5/2026 – Xudong Zheng, Sameia Zaman, Kenan Zhang and collaborators’ manuscript, “Encapsulation epitaxy of air-stable 2D superconductors for quantum circuits,” was published in Nature!

7/23/2026 -Sameia Zaman and collaborators’ manuscript, “Kinetic inductance of few-layer NbSe₂ in the two-dimensional limit,” was published in Nature Communications!

7/23/2026 – Junyoung and collaborators’ manuscript, “ZZ-free two-transmon CZ gate mediated by a fluxonium coupler,” was published as an Editors’ Suggestion in Physical Review Applied!

 

 

Recent Publications:

Bosonic error correction with fluxonium
S. R. Jha, S. D. Chowdhury, G. Rolleri, A. Ali, L.-A. Sellem, R. Assouly, D. Pahl, L. Pahl, J. An, F. Hassani, H.-Y. Tsao, C.-C. Tsai, A. Goswami, G. D. Cutter, J. Boudreault, J. M. Gertier, M. A. Gingras, B. M. Niedzielski, J. M. Knecht, M. E. Schwartz, K. Serniak, J. A. Grover, B. Royer, M. Hays, W. D. Oliver
arXiv:2609.26880 (2026)

Frequency- and amplitude-modulated gates for universal quantum control
Q. Ding, S. Chowdhury, A. Di Paolo, R. Assouly, A.V. Oppenheim, J. A. Grover, W. D. Oliver
PRX Quantum 7, 033066 (2026) | arXiv:2511.03164 (2025)

An All-van-der-Waals qubit
S. Park, S. Zaman, J. Kim, J. An, D. Rodan-Legrain, H.-Y. Tsao, C.-C. Tsai, A. Goswami, R. Assouly, W. P. Banner, G. D. Cutter, K. Watanabe, T. Taniguchi, T. P. Orlando, G. Lee, K. Serniak, M. Hays, J. A. Grover, P. Kim, P. Jarillo-Herrero, J. I-J. Wang, W. D. Oliver
arXiv:2609.14230 (2026)

Bosonic quantum control with a weekly coupled fluxonium qubit
A. Ali, S. R. Jha, S. D. Chowdhury, L.-A. Sellem, M. Hays, W. D. Oliver, B. Royer
arXiv:2609.01817 (2026)

Device characterization of Si/SiGe double quantum dots using exchange oscillations in Earth’s magnetic field
H. G. Stemp, H. H. Kang, C. H. Yang, G. D. Cutter, F. Brockmeyer, P. J. Strohbeen, M. Hays, J. A. Grover, W. D. Oliver
arXiv:2608.31093 (2026)