5 papers
A frequency-agile microwave-optical interface for superconducting qubits
Yufeng Wu, Yiyu Zhou, Haoqi Zhao +4
Superconducting quantum processors operate at microwave frequencies in millikelvin environments, making it challenging to interconnect distant nodes using conventional microwave wi…
A kilometer photonic link connecting superconducting circuits in two dilution refrigerators
Yiyu Zhou, Yufeng Wu, Chunzhen Li +4
Superconducting quantum processors are a leading platform for implementing practical quantum computation algorithms. Although superconducting quantum processors with hundreds of qu…
Degeneracy-Locked Optical Parametric Oscillator
Fengyan Yang, Jiacheng Xie, Yiyu Zhou +4
Optical parametric oscillators (OPOs) are widely utilized in photonics as classical and quantum light sources. Conventional OPOs produce co-propagating signal and idler waves that…
Broad Spectrum Coherent Frequency Conversion with Kinetic Inductance Superconducting Metastructures
Yufeng Wu, Chaofan Wang, Danqing Wang +3
Parametric frequency converters (PFCs) play a critical role in bridging the frequency gap between quantum information carriers. PFCs in the microwave band are particularly importan…
High-efficiency, cryogenic-compatible grating couplers on an AlN-on-sapphire platform through bottom-side coupling
Yiyu Zhou, Mohan Shen, Chunzhen Li +2
Sapphire is a commonly used substrate for wide-bandgap III-nitride photonic materials. However, its relatively high refractive index results in low transmission efficiency in grati…