A quantum-network register assembled with optical tweezers in an optical cavity

• 成果类型: Article
• 署名作者: Hartung, Lukas; Seubert, Matthias; Welte, Stephan; Distante, Emanuele; Rempe, Gerhard
• 署名单位: Max Planck Society; Swiss Federal Institutes of Technology Domain; ETH Zurich; Barcelona Institute of Science & Technology; Universitat Politecnica de Catalunya; Institut de Ciencies Fotoniques (ICFO)
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-11196
• DOI: 10.1126/science.ado6471
• 发表日期: 2024-07-12
• 页码: 179-183
• 关键词: single atoms; transport

摘要

Quantum computation and quantum communication are expected to provide users with capabilities inaccessible by classical physics. However, scalability to larger systems with many qubits is challenging. One solution is to develop a quantum network consisting of small-scale quantum registers containing computation qubits that are reversibly interfaced to communication qubits. In this study, we report on a register that uses both optical tweezers and optical lattices to deterministically assemble a two-dimensional array of atoms in an optical cavity. Harnessing a single atom-addressing beam, we stimulate the emission of a photon from each atom and demonstrate multiplexed atom-photon entanglement with a generation-to-detection efficiency approaching 90%. Combined with cavity-mediated quantum logic, our approach provides a possible route to distributed quantum information processing.