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Acousto-optic modulator-based bi-frequency interferometer for quantum technology
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DOI：10.3788/COL202422.022703.png)
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Abstract
En 中文
We demonstrate a high-performance acousto-optic modulator-based bi-frequency interferometer, which can realize either beating or beating free interference for a single-photon level quantum state. Visibility and optical efficiency of the interferometer are (99.5 +/- 0.2)% and (95 +/- 1)%, respectively. The phase of the interferometer is actively stabilized by using a dithering phase-locking scheme, where the phase dithering is realized by directly driving the acousto-optic modulators with a specially designed electronic signal. We further demonstrate applications of the interferometer in quantum technology, including bi-frequency coherent combination, frequency tuning, and optical switching. These results show the interferometer is a versatile device for multiple quantum technologies.
Keywords:
bi-frequency interferometer
acousto-optic modulator
quantum optics
quantum manipulation