36 citations · 189 across the 15 of their papers we have counts for
15 papers
Two-Level Systems in Nucleated and Non-Nucleated Epitaxial alpha-Tantalum films
L. D. Alegria, D. M. Tennant, K. R. Chaves +4
Building usefully coherent superconducting quantum processors depends on reducing losses in their constituent materials. Tantalum, like niobium, has proven utility as the primary s…
Enhancing Qubit Readout with Autoencoders
Piero Luchi, Paolo E. Trevisanutto, Alessandro Roggero +5
In addition to the need for stable and precisely controllable qubits, quantum computers take advantage of good readout schemes. Superconducting qubit states can be inferred from th…
Noise-specific beats in the higher-level Ramsey curves of a transmon qubit
L. A. Martinez, Z. Peng, D. Appelö +4
In the higher levels of superconducting transmon devices, and more generally charge sensitive devices, measurements made in the presence of low-frequency time-correlated $1…
Simulating noise on a quantum processor: interactions between a qubit and resonant two-level system bath
Yujin Cho, Dipti Jasrasaria, Keith G. Ray +4
Material defects fundamentally limit the coherence times of superconducting qubits, and manufacturing completely defect-free devices is not yet possible. Therefore, understanding t…
A Simulation Methodology for Superconducting Qubit Readout Fidelity
Hiu Yung Wong, Yaniv Jacob Rosen, Kristin M. Beck +1
Qubit readout is a critical part of any quantum computer including the superconducting-qubit-based one. The readout fidelity is affected by the readout pulse width, readout pulse e…
Experimentally revealing anomalously large dipoles in a quantum-circuit dielectric
Liuqi Yu, Shlomi Matityahu, Yaniv J. Rosen +5
Quantum two-level systems (TLSs) intrinsic to glasses induce decoherence in many modern quantum devices, such as superconducting qubits. Although the low-temperature physics of the…
Low frequency correlated charge noise measurements across multiple energy transitions in a tantalum transmon
Daniel M. Tennant, Luis A. Martinez, Kristin M. Beck +5
Transmon qubits fabricated with tantalum metal have been shown to possess energy relaxation times greater than 300 s and, as such, present an attractive platform for high precis…
Cryogenic single-port calibration for superconducting microwave resonator measurements
Haozhi Wang, S. Singh, C. R. H. McRae +8
Superconducting circuit testing and materials loss characterization requires robust and reliable methods for the extraction of internal and coupling quality factors of microwave re…
Nonlinear Signal Distortion Corrections Through Quantum Sensing
Kevin R. Chaves, Xian Wu, Yaniv J. Rosen +1
Having accurate gate generation is essential for precise control of a quantum system. The generated gate usually suffers from linear and nonlinear distortion. Previous works have d…
Improving Qubit Readout with Hidden Markov Models
Luis A. Martinez, Yaniv J. Rosen, Jonathan L. DuBois
We demonstrate the application of pattern recognition algorithms via hidden Markov models (HMM) for qubit readout. This scheme provides a state-path trajectory approach capable of…
Simulating nonnative cubic interactions on noisy quantum machines
Yuan Shi, Alessandro R. Castelli, Xian Wu +8
As a milestone for general-purpose computing machines, we demonstrate that quantum processors can be programmed to efficiently simulate dynamics that are not native to the hardware…
Protecting superconducting qubits from phonon mediated decay
Yaniv J. Rosen, Matthew Horsley, Sara E. Harrison +4
For quantum computing to become fault tolerant, the underlying quantum bits must be effectively isolated from the noisy environment. It is well known that including an electromagne…
High-Kinetic Inductance Additive Manufactured Superconducting Microwave Cavity
Eric T. Holland, Yaniv J. Rosen, Nicholas Materise +6
Investigations into the microwave surface impedance of superconducting resonators have led to the development of single photon counters that rely on kinetic inductance for their op…
Highly Effective Superconducting Vortex Pinning in Conformal Crystals
S. Guénon, Y. J. Rosen, Ali C. Basaran +1
We have investigated the vortex dynamics in superconducting thin film devices with non-uniform patterns of artificial pinning centers (APCs). The magneto-transport properties of a…
Vortex ratchet reversal: The role of interstitial vortices
D. Perez de Lara, M. Erekhinsky, E. M. Gonzalez +3
Triangular arrays of Ni nanotriangles embedded in superconducting Nb films exhibit unexpected dynamical vortex effects. Collective pinning with a vortex lattice configuration diffe…