Related Experiment Video
Updated: Sep 20, 2026

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
Qubit Syndrome Measurements with a High-Fidelity Rb-Cs Rydberg Gate
J Miles1, M T Lichtman1, A M Scott1
1Infleqtion, Madison, Wisconsin, 53703, USA.
Abstract:
We demonstrate an interspecies entangling Rydberg gate between rubidium (Rb) and cesium (Cs) atoms with fidelity F=0.975±0.002. The two-species atom array enables in-place quantum nondemolition (QND) qubit measurements which are a key capability for quantum error correction. We demonstrate this functionality with multiatom error syndrome measurements achieving QND measurement fidelities of F_{QND}=0.933(12) and 0.865(17) for two- and three-qubit plaquettes, respectively.
Related Concept Videos
Mass Analyzers: Common Types
2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)
