40 citations · 115 across the 11 of their papers we have counts for
12 papers
Scaling Alternating-Bias-Assisted Annealing for Precision Transmon Frequency Targeting on Superconducting Quantum Processors
Xiqiao Wang, Mark Field, Teng Zhang +18
Recent advances in the alternating-bias-assisted annealing (ABAA) technique have successfully mitigated intrinsic Josephson-junction (JJ) fabrication variations. This new technique…
Automating detection of Two-Level Systems in Superconducting Qubits
Rama Khalil, Cameron J. Kopas, Avinash Pathapati +9
Microscopic two-level system (TLS) defects remain a primary mechanism of decoherence and operational instability in superconducting transmon qubits, necessitating scalable and auto…
Localized Thermometry via Dayem Bridges Integrated on Superconducting Qubit Chips
Ella O. Lachman, Dave P. Pappas, Jayss Marshall +1
Accurate knowledge of the on-chip temperature is essential for understanding and optimizing the performance of superconducting qubits, yet direct thermometry at millikelvin tempera…
Magneto-optical study of Nb thin films for superconducting qubits
Amlan Datta, Kamal R. Joshi, Sunil Ghimire +7
Among the recognized sources of decoherence in superconducting qubits, the spatial inhomogeneity of the superconducting state and the possible presence of magnetic-flux vortices re…
Fabrication and Structural Analysis of Trilayers for Tantalum Josephson Junctions with TaO Barriers
Raahul Potluri, Rohin Tangirala, Jiangteng Liu +6
Tantalum (Ta) has emerged as a promising low-loss material, enabling record coherence times in superconducting qubits. This enhanced performance is largely attributed to its stable…
Identifying Materials-Level Sources of Performance Variation in Superconducting Transmon Qubits
Akshay A. Murthy, Mustafa Bal, Michael J. Bedzyk +46
The Superconducting Materials and Systems (SQMS) Center, a DOE National Quantum Information Science Research Center, has conducted a comprehensive and coordinated study using super…
Precision frequency tuning of tunable transmon qubits using alternating-bias assisted annealing
Xiqiao Wang, Joel Howard, Eyob A. Sete +13
Superconducting quantum processors are one of the leading platforms for realizing scalable fault-tolerant quantum computation (FTQC). The recent demonstration of post-fabrication t…
Alternating Bias Assisted Annealing of Amorphous Oxide Tunnel Junctions
David P. Pappas, Mark Field, Cameron Kopas +10
We demonstrate a transformational technique for controllably tuning the electrical properties of fabricated thermally oxidized amorphous aluminum-oxide tunnel junctions. Using conv…
TOF-SIMS Analysis of Decoherence Sources in Nb Superconducting Resonators
Akshay A. Murthy, Jae-Yel Lee, Cameron Kopas +6
Superconducting qubits have emerged as a potentially foundational platform technology for addressing complex computational problems deemed intractable with classical computing. Des…
Towards merged-element transmons using silicon fins: the FinMET
Aranya Goswami, Anthony P. McFadden, Tongyu Zhao +7
A merged-element transmon (MET) device, based on silicon (Si) fins, is proposed and the first steps to form such a "FinMET" are demonstrated. This new application of fin technology…
Gate-free state preparation for fast variational quantum eigensolver simulations: ctrl-VQE
Oinam Romesh Meitei, Bryan T. Gard, George S. Barron +4
The variational quantum eigensolver (VQE) is currently the flagship algorithm for solving electronic structure problems on near-term quantum computers. This hybrid quantum/classica…
Thin film dielectric microstrip kinetic inductance detectors
B. A. Mazin, D. Sank, S. McHugh +6
Microwave Kinetic Inductance Detectors, or MKIDs, are a type of low temperature detector that exhibit intrinsic frequency domain multiplexing at microwave frequencies. We present t…