Southwest Quantum Information and Technology

Trapping and manipulating 2D Coulomb crystals for quantum information processing

Presenting Author: Alex Kato, University of Washington
Contributing Author(s): Megan Ivory, Jennifer Lilieholm, Liudmila Zhukas, Xiayu Linpeng, Vasilis Niaouris, Maria Viitaniemi, Kai-Mei Fu, Boris Blinov

Quantum computation in trapped ions is most commonly performed in linear Paul traps, where excess micromotion can be minimized. 2D coulomb crystals pose several advantages that may enhance the scalability of trapped ion systems and enable more fault tolerant computation schemes. Yet RF ion trap geometries that are capable of trapping 2D crystals inevitably lead to significant micromotion in ions away from the trap center, causing infidelities in qubit operations. Our trap is designed to strongly confine ions to the crystal plane, where transverse micromotion can be minimized and addressing laser beams experience no significant doppler shift. While excess planar micromotion will be present, we seek to demonstrate recently proposed methods that only use transverse modes to apply a spin dependent force to neighbouring ions, while accounting for in-plane micromotion through a series of segmented pulses to achieve high fidelity two qubit operations. We discuss our current progress in trapping and manipulating 2D ion crystals. In addition, we discuss beginning efforts to entangle a single trapped ion to a solid-state zinc oxide defect via direct photonic link.

(Session 8 : Sunday from 2:15pm - 2:45pm)