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Materials

Superconductors

News and Updates

Projects and Programs

coplanar superconducting waveguide

Amplifiers

To process quantum information it is important to have amplifiers with wide bandwidth, high dynamic range, and low noise.
Superconducting qubit development and spectroscopy

Qubits

The Qubits Project develops new geometries for superconducting quantum binary devices as fundamental building blocks for quantum computing.

Publications

Absolute energies and emission line shapes of the x-ray lines of lanthanide metals

Author(s)
Joseph Fowler, Galen O'Neil, Bradley K. Alpert, Douglas Bennett, Edward V. Denison, William Doriese, Gene Hilton, Lawrence T. Hudson, Young I. Joe, Kelsey Morgan, Daniel Schmidt, Daniel Swetz, Csilla I. Szabo-Foster, Joel Ullom
We use an array of transition-edge sensors, cryogenic microcalorimeters with 4 eV energy resolution, to measure the x-ray emission-line profiles of four

Characterization of a Josephson Junction Comb Generator

Author(s)
Akim A. Babenko, Alirio De Jesus Soares Boaventura, Nathan E. Flowers-Jacobs, Justus A. Brevik, Anna E. Fox, Dylan Williams, Zoya Popovic, Paul D. Dresselhaus, Samuel P. Benz
We present a new type of microwave frequency combs with a potentially calculable pulse shape. The device is an array of 1500 Josephson junctions (JJs) connected

Materials loss measurements using superconducting microwave resonators

Author(s)
Corey Rae H. McRae, Haozhi Wang, Jiansong Gao, Michael R. Vissers, Teresa Brecht, A Dunsworth, David P. Pappas, J. Mutus
The performance of superconducting circuits for quantum computing is limited by materials losses. In particular, coherence times are typically bounded by two

Overlap junctions for superconducting quantum electronics and amplifiers

Author(s)
Mustafa Bal, Junling Long, Ruichen Zhao, Haozhi Wang, Sungoh Park, Corey Rae H. McRae, Tongyu Zhao, Russell Lake, Daniil Frolov, Roman Pilipenko, Silvia Zorzetti, Alexander Romanenko, David P. Pappas
Due to their unique properties as lossless, nonlinear circuit elements, Josephson junctions lie at the heart of superconducting quantum information processing

Awards