A small footprint travelling-wave parametric amplifier with a high Signal-to-Noise Ratio improvement in a wide band
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866910581871607808 |
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| author | Nilsson, Hampus Renberg Chen, Liangyu Tancredi, Giovanna Rehammar, Robert Shiri, Daryoush Nilsson, Filip Osman, Amr Shumeiko, Vitaly Delsing, Per |
| author_facet | Nilsson, Hampus Renberg Chen, Liangyu Tancredi, Giovanna Rehammar, Robert Shiri, Daryoush Nilsson, Filip Osman, Amr Shumeiko, Vitaly Delsing, Per |
| contents | We characterise a small footprint travelling-wave parametric amplifier (TWPA). The TWPA is built with magnetically flux-tunable superconducting nonlinear asymmetric inductive elements (SNAILs) and parallel-plate capacitors. It implements three-wave mixing (3WM) with resonant phase matching (RPM), a small cutoff frequency for high gain per unitcell and impedance matching networks for large bandwidth impedance matching. The device has 200 unitcells and a physical footprint of only 1.1 mm^2, yet demonstrates an average parametric gain of 19 dB over a 3 GHz bandwidth, an average effective signal-to-noise ratio improvement of 10 dB and a clear speedup of qubit readout time. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_16366 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A small footprint travelling-wave parametric amplifier with a high Signal-to-Noise Ratio improvement in a wide band Nilsson, Hampus Renberg Chen, Liangyu Tancredi, Giovanna Rehammar, Robert Shiri, Daryoush Nilsson, Filip Osman, Amr Shumeiko, Vitaly Delsing, Per Applied Physics Quantum Physics We characterise a small footprint travelling-wave parametric amplifier (TWPA). The TWPA is built with magnetically flux-tunable superconducting nonlinear asymmetric inductive elements (SNAILs) and parallel-plate capacitors. It implements three-wave mixing (3WM) with resonant phase matching (RPM), a small cutoff frequency for high gain per unitcell and impedance matching networks for large bandwidth impedance matching. The device has 200 unitcells and a physical footprint of only 1.1 mm^2, yet demonstrates an average parametric gain of 19 dB over a 3 GHz bandwidth, an average effective signal-to-noise ratio improvement of 10 dB and a clear speedup of qubit readout time. |
| title | A small footprint travelling-wave parametric amplifier with a high Signal-to-Noise Ratio improvement in a wide band |
| topic | Applied Physics Quantum Physics |
| url | https://arxiv.org/abs/2408.16366 |