Electrical and microwave readout and coherent control of nitrogen-vacancy (NV) centers in diamond and single-photon emitters (SPEs) in two-dimensional materials. We study strong coupling between solid-state defects and microwave cavities, including superconducting resonators.
⟨ψ| whoami
Shihao Ru
quantum sensing · AI for quantum measurement
research fellow · school of electrical and electronic engineering, NTU
spin defects · quantum sensing · hybrid systems · photonic quantum information · instrumentation
shihao@quantru:~/research
⟨ψ| research
What I'm working on
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#spin-defects
Quantum sensing
Spin defects in hBN and NV centers in diamond, driven optically and by microwaves, read out electrically — for magnetic-field and nanoscale sensing.
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#hybrid-systems
Hybrid quantum systems
Strong coupling between solid-state spin defects and microwave cavities, connecting long-lived spin states with microwave photons.
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#photonic-info
Photonic quantum information
Single-photon experiments — high-dimensional gates, multi-photon entanglement, teleportation, nonlocality, and contextuality.
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#instrumentation
AI + FPGA for quantum measurement
FPGA hardware for deterministic timing and real-time signal processing, with AI-assisted experiment control.
The aim is to move cleanly from a quantum mechanism to a measurement protocol—and from that protocol to an instrument that works outside a single demonstration.
⟨ψ| scholar --author="Shihao Ru" --recent
Latest papers
view all ↗-
All-Optical Wide-Field Magnetometry with Van Der Waals Quantum Sensor
F. Zhou, P. Ma, J. Li, K. Jing, S. Ru, et al. · arXiv:2606.07899
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Room-Temperature Electrical Readout of Spin Defects in van der Waals Materials
S. Ru, L. An, H. Liang, Z. Jiang, Z. Li, et al. · Phys. Rev. Lett. 135, 220802
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Observation of Ferromagnetic Phase in the Second Moiré Band of Twisted MoTe₂
L. An, H. Pan, W.-X. Qiu, N. Wang, S. Ru, et al. · Nat. Commun. 16, 5131
⟨ψ| blog
Blog
$ ls ./blog → empty
// coming soon — experiment notes, instruments, and quantum sensing stories.
⟨ψ| ls ./projects
Active projects
We develop compact and microscale quantum magnetometers, from portable sensing modules to chip-scale devices with integrated optical, microwave, and electrical control.
We study correlated phases and collective excitations in moiré materials at cryogenic temperatures, including electronic phonons in WS₂/WSe₂ electron crystals ↗ and gate-tunable ferromagnetism in the second moiré band of twisted MoTe₂ ↗.
An integrated control stack for planning experiments, coordinating instruments, and executing low-latency quantum measurement loops.
⟨ψ| contact
Let's talk.
Ask me about solid-state spin systems, quantum sensing, hybrid quantum networks, photonic experiments, or scientific instrumentation.
shihao.ru.2018 at gmail.com
School of Electrical and Electronic Engineering · Nanyang Technological University
21 Nanyang Link, Singapore 637371