Year: 2024
Type: article
Abstract: We demonstrate a novel experimental tool set that enables irreversible multiqubit operations on a quantum platform. To exemplify our approach, we realize two elementary nonunitary operations: the or and nor gates. The electronic states of two trapped ^{40}Ca^{+} ions encode the logical information, and a cotrapped ^{88}Sr^{+} ion provides the irreversibility of the gate by a dissipation channel through sideband cooling. We measure 87% and 81% success rates for the or and nor gates, respectively. The presented methods are a stepping stone toward other nonunitary operations such as in quantum error correction and quantum machine learning.
Source: Physical Review Letters
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, Office of the Director of National Intelligence, European Commission, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Austrian Science Fund, Eidgenössische Technische Hochschule Zürich, Intelligence Advanced Research Projects Activity, Army Research Office
Awards: G104788807, G1432373144, Dissipation Engineering of Fault-Tolerant Quantum Computation and Phases for Quantum Metrology, Advanced quantum computing with trapped ions, G3165068977, G3216352777, G3424441068, G4430097687, G4713038487, G4934466994, G5237633205, G657448715, G7452299184, G7861265189
OpenAlex ID: W4391134913