6 papers
Accessing 100 GHz Mechanical Modes in Bulk Crystals at Cryogenic Temperatures
Boxuan Tian, Jiacheng Xie, Hong X. Tang
Sub-terahertz electromechanics offers a promising route to probe mechanical quantum motion at experimentally friendly Kelvin temperatures. Traditionally, high-frequency mechanical…
Towards terahertz nanomechanics
Jiacheng Xie, Weifeng Wu, Mohan Shen +2
Advancing electromechanical resonators towards terahertz frequencies opens vast bandwidths for phononic signal processing. In quantum phononics, mechanical resonators at these freq…
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…
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…
Fluorescence enabled phonon counting in an erbium doped piezo-optomechanical microcavity
Likai Yang, Jiacheng Xie, Hong X. Tang
Converting phonons to photons with optomechanical interaction provides a pathway to realize single phonon counting, which is instrumental in the quantum applications of mechanical…
Unveiling the Pockels Coefficient of Ferroelectric Nitride ScAlN
Guangcanlan Yang, Haochen Wang, Sai Mu +7
Nitride ferroelectrics have recently emerged as promising alternatives to oxide ferroelectrics due to their compatibility with mainstream semiconductor processing. ScAlN, in partic…