An on-chip programmable mechano-quantum transducer
Authors:
Xinrui Zhang,
Wei Liu,
Duanyu Ma,
Lin-Ke Xie,
Nai-Jie Guo,
Zhongtao Gou,
Yifan Wang,
Jianxin Xu,
Xiaoguang Luo,
Zhao Mu,
Honglong Chang,
Weizheng Yuan,
Jian-Shun Tang,
Chuan-Feng Li,
Guangcan Guo,
Tao Ye
Abstract:
Solid-state spin defects encode local perturbations as measurable shifts in spin-transition frequencies, but mechanical actuation and quantum readout remain physically separated, resulting in a discrete measurement setup. Integrating these functions requires an on-site mechano-quantum interface that programs the lattice state of a defect host and quantitatively maps it onto the spin Hamiltonian. H…
▽ More
Solid-state spin defects encode local perturbations as measurable shifts in spin-transition frequencies, but mechanical actuation and quantum readout remain physically separated, resulting in a discrete measurement setup. Integrating these functions requires an on-site mechano-quantum interface that programs the lattice state of a defect host and quantitatively maps it onto the spin Hamiltonian. Here we first report an on-chip programmable mechano-quantum transducer (OCPMQT) that integrates voltage-defined micromechanical actuation with in situ spin-frequency readout in a two-dimensional van der Waals quantum-defect host. Mechanically programmed lattice states are encoded as shifts in the axial zero-field splitting parameter and resolved by optically detected magnetic resonance (ODMR) spectroscopy. Within a chip volume of 2.05*10^-2 cm^3, the transducer accesses ODMR-inferred strains as low as 0.0080% and delivers a volumetric force density of approximately 2.6*10^4 N*m^-3. A micromechanical-to-spin-Hamiltonian framework links on-chip electromechanics, interfacial strain transfer, and strain-spin coupling, enabling the electrical control micromechanical input to be measured directly as spin-frequency response.
△ Less
Submitted 26 July, 2026; v1 submitted 23 July, 2026;
originally announced July 2026.