期刊
SCIENCE
卷 355, 期 6328, 页码 939-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aah6640
关键词
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资金
- Netherlands Organisation for Scientific Research (NWO/OCW), as part of the Frontiers of Nanoscience program
- Foundation for Fundamental Research on Matter (FOM)
- European Research Council (ERC)
- Microsoft Corporation Station Q
Superconducting electronic devices have reemerged as contenders for both classical and quantum computing due to their fast operation speeds, low dissipation, and long coherence times. An ultimate demonstration of coherence is lasing. We use one of the fundamental aspects of superconductivity, the ac Josephson effect, to demonstrate a laser made from a Josephson junction strongly coupled to a multimode superconducting cavity. A dc voltage bias applied across the junction provides a source of microwave photons, and the circuit's nonlinearity allows for efficient down-conversion of higher-order Josephson frequencies to the cavity's fundamental mode. The simple fabrication and operation allows for easy integration with a range of quantum devices, allowing for efficient on-chip generation of coherent microwave photons at low temperatures.
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