95 citations · 196 across the 22 of their papers we have counts for
23 papers
Observation of a topological edge state among localized bulk states in the anisotropic quantum Rabi model
Sungjoo Lim, Chanyang Im, Christopher G. Yale +7
Topological phases are governed by discrete symmetries that protect boundary modes against local perturbations. When translational periodicity is absent, the bulk states also becom…
Trigonometric Continuous-Variable Quantum Gates: Realization with Trapped Ions and Nonperturbative Wigner Negativity
Tommaso Rainaldi, Jake Montgomery, Christopher G. Yale +8
We experimentally realize trigonometric continuous-variable gates on a trapped-ion processor, for which a motional mode acquires a phase proportional to the cosine of its position…
Revealing Noise in Axial Motion Through Quantum Noise Spectroscopy on a Trapped Ion Processor
Vivian Maloney, Matthew Chow, Leigh Norris +7
Native noise processes in quantum processors are often difficult to isolate because multiple error mechanisms contribute to the same measured loss of coherence. Here we use dephasi…
QSCOUT's Qubit-Boson Gate Set
Edward C. Tortorici, Ethan C. McGarrigle, Brian K. McFarland +6
The Quantum Scientific Computing Open User Testbed (QSCOUT) has developed a qubit-boson gate set for hybrid continuous-discrete variable (CV-DV) quantum computing. This document ou…
High-performance gates on trapped ion qubits using counterpropagating pulse-shaped laser beams
Evangelos Piliouras, Hisham Amer, Susan M. Clark +9
Highly-localized light-matter interactions are necessary for scaling trapped-ion architectures. In hyperfine qubits, counterpropagating beams generate entangling gates by coupling…
Tensor-Network-Based Distributed Quantum Dynamics on Independent Quantum Computers
Anurag Dwivedi, Melissa C. Revelle, Daniel S. Lobser +6
We present an approach based on tensor networks for distributed quantum computing simulation of chemical wavepacket dynamics in a continuous variable representation. The central id…
Data-driven learning of non-Markovian quantum dynamics
Samuel Goodwin, Brian K. McFarland, Manuel H. Muñoz-Arias +6
Fault-tolerant quantum computing requires extremely precise knowledge and control of qubit dynamics during the application of a gate. We develop a data-driven learning protocol for…
Realization and Calibration of Continuously Parameterized Two-Qubit Gates on a Trapped-Ion Quantum Processor
Christopher G. Yale, Ashlyn D. Burch, Matthew N. H. Chow +5
Continuously parameterized two-qubit gates are a key feature of state-of-the-art trapped-ion quantum processors as they have favorable error scalings and show distinct improvements…
Solovay Kitaev Algorithm and Randomized Compilation
Oliver Maupin, Ashlyn D. Burch, Christopher G. Yale +10
We analyze the use of the Solovay Kitaev (SK) algorithm to generate an ensemble of one qubit rotations over which to perform randomized compilation. We perform simulations to compa…
Noise-Aware Circuit Compilations for a Continuously Parameterized Two-Qubit Gateset
Christopher G. Yale, Rich Rines, Victory Omole +9
State-of-the-art noisy-intermediate-scale quantum (NISQ) processors are currently implemented across a variety of hardware platforms, each with their own distinct gatesets. As such…
Digital Quantum Simulation of Cavity Quantum Electrodynamics: Insights from Superconducting and Trapped Ion Quantum Testbeds
Alex H. Rubin, Brian Marinelli, Victoria A. Norman +15
We explore the potential for hybrid development of quantum hardware where currently available quantum computers simulate open Cavity Quantum Electrodynamical (CQED) systems for app…
Fault Localization in a Microfabricated Surface Ion Trap using Diamond Nitrogen-Vacancy Center Magnetometry
Pauli Kehayias, Matthew A. Delaney, Raymond A. Haltli +3
As quantum computing hardware becomes more complex with ongoing design innovations and growing capabilities, the quantum computing community needs increasingly powerful techniques…
Mitigating the Effects of Au-Al Intermetallic Compounds Due to High-Temperature Processing of Surface Electrode Ion Traps
Raymond A. Haltli, Eric Ou, Christopher D. Nordquist +2
Stringent physical requirements need to be met for the high performing surface-electrode ion traps used in quantum computing, sensing, and timekeeping. In particular, these traps m…
First-Order Crosstalk Mitigation in Parallel Quantum Gates Driven With Multi-Photon Transitions
Matthew N. H. Chow, Christopher G. Yale, Ashlyn D. Burch +4
We demonstrate an order of magnitude reduction in the sensitivity to optical crosstalk for neighboring trapped-ion qubits during simultaneous single-qubit gates driven with individ…
Error mitigation, optimization, and extrapolation on a trapped ion testbed
Oliver G. Maupin, Ashlyn D. Burch, Brandon Ruzic +8
Current noisy intermediate-scale quantum (NISQ) trapped-ion devices are subject to errors which can significantly impact the accuracy of calculations if left unchecked. A form of e…
Frequency-robust Mølmer-Sørensen gates via balanced contributions of multiple motional modes
Brandon P. Ruzic, Matthew N. H. Chow, Ashlyn D. Burch +5
In this work, we design and implement frequency-robust Molmer-Sorensen gates on a linear chain of trapped ions, using Gaussian amplitude modulation and a constant laser frequency.…
Batching Circuits to Reduce Compilation in Quantum Control Hardware
Ashlyn D. Burch, Daniel S. Lobser, Christopher G. Yale +6
At Sandia National Laboratories, QSCOUT (the Quantum Scientific Computing Open User Testbed) is an ion-trap based quantum computer built for the purpose of allowing users low-level…
Characterizing and mitigating coherent errors in a trapped ion quantum processor using hidden inverses
Swarnadeep Majumder, Christopher G. Yale, Titus D. Morris +6
Quantum computing testbeds exhibit high-fidelity quantum control over small collections of qubits, enabling performance of precise, repeatable operations followed by measurements.…
Sample-efficient verification of continuously-parameterized quantum gates for small quantum processors
Ryan Shaffer, Hang Ren, Emiliia Dyrenkova +7
Most near-term quantum information processing devices will not be capable of implementing quantum error correction and the associated logical quantum gate set. Instead, quantum cir…
Quantum Computation of Hydrogen Bond Dynamics and Vibrational Spectra
Philip Richerme, Melissa C. Revelle, Debadrita Saha +10
Calculating the observable properties of chemical systems is often classically intractable and is widely viewed as a promising application of quantum information processing. Yet on…
In situ detection of RF breakdown on microfabricated surface ion traps
Joshua M. Wilson, Julia N. Tilles, Raymond A. Haltli +4
Microfabricated surface ion traps are a principle component of many ion-based quantum information science platforms. The operational parameters of these devices are pushed to the e…
Engineering the Quantum Scientific Computing Open User Testbed (QSCOUT): Design details and user guide
Susan M. Clark, Daniel Lobser, Melissa Revelle +13
The Quantum Scientific Computing Open User Testbed (QSCOUT) at Sandia National Laboratories is a trapped-ion qubit system designed to evaluate the potential of near-term quantum ha…
Detecting and tracking drift in quantum information processors
Timothy Proctor, Melissa Revelle, Erik Nielsen +5
If quantum information processors are to fulfill their potential, the diverse errors that affect them must be understood and suppressed. But errors typically fluctuate over time, a…