Compact optical waveform generator with digital feedback
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866911340172410880 |
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| author | Yang, Shuzhe Masella, Guido Moeini, Vase Bellahsene, Amar Li, Chang Bienaimé, Tom Whitlock, Shannon |
| author_facet | Yang, Shuzhe Masella, Guido Moeini, Vase Bellahsene, Amar Li, Chang Bienaimé, Tom Whitlock, Shannon |
| contents | A key requirement for quantum technologies based on atoms, ions, and molecules, is the ability to realize precise phase- and amplitude-controlled quantum operations via coherent laser pulses. However, for generating pulses on the sub-microsecond timescale, the characteristics of the optical and electronic components can introduce unwanted distortions that have a detrimental effect on the fidelity of quantum operations. In this paper, we present a compact arbitrary waveform generator that integrates a double-pass acousto-optic modulator for user-specified laser amplitude and phase modulations. Additionally, the module integrates an optical heterodyne detector to extract the precise laser pulse shape in real-time. The measured pulse shape is then fed into a digital feedback loop used to estimate the complex-valued transfer function and pre-distorted input pulses. We demonstrate the performance by generating shaped laser pulses suitable for realizing quantum logic gates with durations down to 180\,ns, requiring only a small number of feedback iterations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_00170 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Compact optical waveform generator with digital feedback Yang, Shuzhe Masella, Guido Moeini, Vase Bellahsene, Amar Li, Chang Bienaimé, Tom Whitlock, Shannon Quantum Physics Atomic Physics Instrumentation and Detectors Optics A key requirement for quantum technologies based on atoms, ions, and molecules, is the ability to realize precise phase- and amplitude-controlled quantum operations via coherent laser pulses. However, for generating pulses on the sub-microsecond timescale, the characteristics of the optical and electronic components can introduce unwanted distortions that have a detrimental effect on the fidelity of quantum operations. In this paper, we present a compact arbitrary waveform generator that integrates a double-pass acousto-optic modulator for user-specified laser amplitude and phase modulations. Additionally, the module integrates an optical heterodyne detector to extract the precise laser pulse shape in real-time. The measured pulse shape is then fed into a digital feedback loop used to estimate the complex-valued transfer function and pre-distorted input pulses. We demonstrate the performance by generating shaped laser pulses suitable for realizing quantum logic gates with durations down to 180\,ns, requiring only a small number of feedback iterations. |
| title | Compact optical waveform generator with digital feedback |
| topic | Quantum Physics Atomic Physics Instrumentation and Detectors Optics |
| url | https://arxiv.org/abs/2411.00170 |