An Electrically Driven Single-atom "flip-flop" Qubit

Overview

Journal Sci Adv

Specialties Biology
Science

Date 2023 Feb 10

PMID 36763660

Authors

Rostyslav Savytskyy

Tim Botzem

Irene Fernandez de Fuentes

Benjamin Joecker

Jarryd J Pla

Fay E Hudson

Kohei M Itoh

Alexander M Jakob

Brett C Johnson

David N Jamieson

Andrew S Dzurak

Andrea Morello

Affiliations

Soon will be listed here.

Abstract

The spins of atoms and atom-like systems are among the most coherent objects in which to store quantum information. However, the need to address them using oscillating magnetic fields hinders their integration with quantum electronic devices. Here, we circumvent this hurdle by operating a single-atom "flip-flop" qubit in silicon, where quantum information is encoded in the electron-nuclear states of a phosphorus donor. The qubit is controlled using local electric fields at microwave frequencies, produced within a metal-oxide-semiconductor device. The electrical drive is mediated by the modulation of the electron-nuclear hyperfine coupling, a method that can be extended to many other atomic and molecular systems and to the hyperpolarization of nuclear spin ensembles. These results pave the way to the construction of solid-state quantum processors where dense arrays of atoms can be controlled using only local electric fields.

Citing Articles

Coherent spin dynamics between electron and nucleus within a single atom.

Veldman L, Stolte E, Canavan M, Broekhoven R, Willke P, Farinacci L Nat Commun. 2024; 15(1):7951.

PMID: 39261483 PMC: 11390743. DOI: 10.1038/s41467-024-52270-0.

Navigating the 16-dimensional Hilbert space of a high-spin donor qudit with electric and magnetic fields.

Fernandez de Fuentes I, Botzem T, Johnson M, Vaartjes A, Asaad S, Mourik V Nat Commun. 2024; 15(1):1380.

PMID: 38355747 PMC: 11258329. DOI: 10.1038/s41467-024-45368-y.

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