Bidirectional microwave-optical transduction based on integration of high-overtone bulk acoustic resonators and photonic circuits
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866917772009668608 |
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| author | Blésin, Terence Kao, Wil Siddharth, Anat Wang, Rui N. Attanasio, Alaina Tian, Hao Bhave, Sunil A. Kippenberg, Tobias J. |
| author_facet | Blésin, Terence Kao, Wil Siddharth, Anat Wang, Rui N. Attanasio, Alaina Tian, Hao Bhave, Sunil A. Kippenberg, Tobias J. |
| contents | Coherent interconversion between microwave and optical frequencies can serve as both classical and quantum interfaces for computing, communication, and sensing. Here, we present a compact microwave-optical transducer based on monolithic integration of piezoelectric actuators atop silicon nitride photonic circuits. Such an actuator directly couples microwave signals to a high-overtone bulk acoustic resonator defined by the suspended silica cladding of the optical waveguide core, which leads to enhanced electromechanical and optomechanical couplings. At room temperature, this triply resonant piezo-optomechanical transducer achieves an off-chip photon number conversion efficiency of -48 dB over a bandwidth of 25 MHz at an input pump power of 21 dBm. The approach is scalable in manufacturing and, unlike existing electro-optic transducers, does not rely on superconducting resonators. As the transduction process is bidirectional, we further demonstrate synthesis of microwave pulses from a purely optical input. Combined with the capability of leveraging multiple acoustic modes for transduction, the present platform offers prospects for building frequency-multiplexed qubit interconnects and for microwave photonics at large. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_02706 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Bidirectional microwave-optical transduction based on integration of high-overtone bulk acoustic resonators and photonic circuits Blésin, Terence Kao, Wil Siddharth, Anat Wang, Rui N. Attanasio, Alaina Tian, Hao Bhave, Sunil A. Kippenberg, Tobias J. Quantum Physics Optics Coherent interconversion between microwave and optical frequencies can serve as both classical and quantum interfaces for computing, communication, and sensing. Here, we present a compact microwave-optical transducer based on monolithic integration of piezoelectric actuators atop silicon nitride photonic circuits. Such an actuator directly couples microwave signals to a high-overtone bulk acoustic resonator defined by the suspended silica cladding of the optical waveguide core, which leads to enhanced electromechanical and optomechanical couplings. At room temperature, this triply resonant piezo-optomechanical transducer achieves an off-chip photon number conversion efficiency of -48 dB over a bandwidth of 25 MHz at an input pump power of 21 dBm. The approach is scalable in manufacturing and, unlike existing electro-optic transducers, does not rely on superconducting resonators. As the transduction process is bidirectional, we further demonstrate synthesis of microwave pulses from a purely optical input. Combined with the capability of leveraging multiple acoustic modes for transduction, the present platform offers prospects for building frequency-multiplexed qubit interconnects and for microwave photonics at large. |
| title | Bidirectional microwave-optical transduction based on integration of high-overtone bulk acoustic resonators and photonic circuits |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2308.02706 |