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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2506.14651 |
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| _version_ | 1866915348509360128 |
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| author | Sun, Yuting Li, Xianke Wang, Qingyu Bai, Tairong Liao, Xudong Lan, Dong Zhao, Jie Yu, Yang |
| author_facet | Sun, Yuting Li, Xianke Wang, Qingyu Bai, Tairong Liao, Xudong Lan, Dong Zhao, Jie Yu, Yang |
| contents | Broadband quantum-limited amplifiers are essential for quantum information processing, yet challenges in design and fabrication continue to hinder their widespread applications. Here, we introduce the broadband merged-element Josephson parametric amplifier in which the discrete parallel capacitor is directly integrated with the Josephson junctions. This merged-element design eliminates the shortcomings of discrete capacitors, simplifying the fabrication process, reducing the need for high-precision lithography tools, and ensuring compatibility with standard superconducting qubit fabrication procedures. Experimental results demonstrate a gain of 15 dB over a 500 MHz bandwidth, a mean saturation power of -116 dBm and near-quantum-limited noise performance. This robust readily implemented parametric amplifier holds significant promise for broader applications in superconducting quantum information and the advancement of quantum computation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_14651 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Broadband merged-element Josephson parametric amplifier Sun, Yuting Li, Xianke Wang, Qingyu Bai, Tairong Liao, Xudong Lan, Dong Zhao, Jie Yu, Yang Quantum Physics Broadband quantum-limited amplifiers are essential for quantum information processing, yet challenges in design and fabrication continue to hinder their widespread applications. Here, we introduce the broadband merged-element Josephson parametric amplifier in which the discrete parallel capacitor is directly integrated with the Josephson junctions. This merged-element design eliminates the shortcomings of discrete capacitors, simplifying the fabrication process, reducing the need for high-precision lithography tools, and ensuring compatibility with standard superconducting qubit fabrication procedures. Experimental results demonstrate a gain of 15 dB over a 500 MHz bandwidth, a mean saturation power of -116 dBm and near-quantum-limited noise performance. This robust readily implemented parametric amplifier holds significant promise for broader applications in superconducting quantum information and the advancement of quantum computation. |
| title | Broadband merged-element Josephson parametric amplifier |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2506.14651 |