Robust and Resource-Efficient Microwave Near-Field Entangling ^{9}Be^{+} Gate

verfasst von

G. Zarantonello, H. Hahn, M. Schulte, A. Bautista-Salvador, R. F. Werner, K. Hammerer, C. Ospelkaus, J. Morgner

Abstract

Microwave trapped-ion quantum logic gates avoid spontaneous emission as a fundamental source of decoherence. However, microwave two-qubit gates are still slower than laser-induced gates and hence more sensitive to fluctuations and noise of the motional mode frequency. We propose and implement amplitude-shaped gate drives to obtain resilience to such frequency changes without increasing the pulse energy per gate operation. We demonstrate the resilience by noise injection during a two-qubit entangling gate with ^{9}Be^{+} ion qubits. In the absence of injected noise, amplitude modulation gives an operation infidelity in the 10^{-3} range.

Organisationseinheit(en)

Institut für Quantenoptik
Institut für Theoretische Physik
Laboratorium für Nano- und Quantenengineering
QuantumFrontiers
SFB 1227: Designte Quantenzustände der Materie (DQ-mat)

Externe Organisation(en)

Physikalisch-Technische Bundesanstalt (PTB)

Typ

Artikel

Journal

Physical review letters

Band

123

ISSN

0031-9007

Publikationsdatum

31.12.2019

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Physik und Astronomie (insg.)

Elektronische Version(en)

https://doi.org/10.48550/arXiv.1911.03954 (Zugang: Offen)
https://doi.org/10.1103/PhysRevLett.123.260503 (Zugang: Geschlossen)