首页|Acousto-optic modulator-based bi-frequency interferometer for quantum technology
Acousto-optic modulator-based bi-frequency interferometer for quantum technology
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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 inter-ferometer 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 interferom-eter is a versatile device for multiple quantum technologies.
College of Precision Instrument and Opto-Electronics Engineering,Key Laboratory of Opto-Electronics Information Technology,Ministry of Education,Tianjin University,Tianjin 300072,China
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