High-fidelity robust qubit control by phase-modulated pulses

M Kuzmanović, I Björkman, JJ McCord, S Dogra… - Physical Review …, 2024 - APS
We present a set of robust and high-fidelity pulses that realize paradigmatic operations such
as the transfer of the ground state population into the excited state and arbitrary X/Y rotations …

Programmable XY-type couplings through parallel spin-dependent forces on the same trapped ion motional modes

N Kotibhaskar, CY Shih, S Motlakunta, A Vogliano… - Physical Review …, 2024 - APS
We propose and experimentally demonstrate an analog scheme for generating XY-type (J
ijx σ xi σ xj+ J ijy σ yi σ yj) Hamiltonians on trapped ion spins with independent control over …

Fast Quantum State Preparation and Bath Dynamics Using Non-Gaussian Variational Ansatz and Quantum Optimal Control

LJ Bond, A Safavi-Naini, J Minář - Physical Review Letters, 2024 - APS
Fast preparation of quantum many-body states is essential for myriad quantum algorithms
and metrological applications. Here, we develop a new pathway for fast, nonadiabatic …