Tunable Microwave Single-photon Source Based on Transmon Qubit with High Efficiency
| Autor: | Z. H. Peng, Jaw-Shen Tsai, Yu Zhou, Yuta Horiuchi, Oleg V. Astafiev |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
Quantum Physics Photon Condensed Matter - Mesoscale and Nanoscale Physics business.industry Condensed Matter - Superconductivity Dephasing General Physics and Astronomy Physics::Optics FOS: Physical sciences Transmon Quantum technology Superconductivity (cond-mat.supr-con) Qubit Single-photon source Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Optoelectronics business Quantum information science Quantum Physics (quant-ph) Microwave |
| DOI: | 10.48550/arxiv.1905.04032 |
| Popis: | Single-photon sources are of great interest because they are key elements in different promising applications of quantum technologies. Here we demonstrate a highly efficient tunable on-demand microwave single-photon source based on a transmon qubit with the intrinsic emission efficiency above 98$\%$. The high efficiency ensures a negligible pure dephasing rate and the necessary condition for generation of indistinguishable photons. We provide an extended discussion and analysis of the efficiency of the photon generation. To further experimentally confirm the single-photon property of the source, correlation functions of the emission field are also measured using linear detectors with a GPU-enhanced signal processing technique. Our results experimentally demonstrate that frequency tunability and negligible pure dephasing rate can be achieved simultaneously and show that such a tunable single-photon source can be good for various practical applications in quantum communication, simulations and information processing in the microwave regime. Comment: 10 pages, 5 figures |
| Databáze: | OpenAIRE |
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