17 citations · 36 across the 6 of their papers we have counts for
6 papers
Empirical learning of dynamical decoupling on quantum processors
Christopher Tong, Helena Zhang, Bibek Pokharel
Dynamical decoupling (DD) is a low-overhead method for quantum error suppression. Despite extensive work in DD design, finding pulse sequences that optimally decouple computational…
Defining Standard Strategies for Quantum Benchmarks
Mirko Amico, Helena Zhang, Petar Jurcevic +4
As quantum computers grow in size and scope, a question of great importance is how best to benchmark performance. Here we define a set of characteristics that any benchmark should…
Machine Learning based Discrimination for Excited State Promoted Readout
Utkarsh Azad, Helena Zhang
A limiting factor for readout fidelity for superconducting qubits is the relaxation of the qubit to the ground state before the time needed for the resonator to reach its final tar…
Recursive Methods for Synthesizing Permutations on Limited-Connectivity Quantum Computers
Cynthia Chen, Bruno Schmitt, Helena Zhang +2
We describe a family of recursive methods for the synthesis of qubit permutations on quantum computers with limited qubit connectivity. Two objectives are of importance: circuit si…
Parallel Position-Controlled Composite Quantum Logic Gates with Trapped Ions
Michael S. Gutierrez, Guang Hao Low, Richard Rines +1
We demonstrate parallel composite quantum logic gates with phases implemented locally through nanoscale movement of ions within a global laser beam of fixed pulse duration. We show…
Iterative Precision Measurement of Branching Ratios Applied to 5P states in 88Sr+
Helena Zhang, Michael Gutierrez, Guang Hao Low +4
We report on a method for measuring the branching ratios of dipole transitions of trapped atomic ions by performing nested sequences of population inversions. This scheme is broadl…