Quantar Lab Tohoku University
Frontier Research Institute for Interdisciplinary Sciences

Quantum algorithms, metrology, and sensing under real-world constraints.

We develop protocols that stay effective where ideal theory breaks down — under noise, finite measurement data, and limited control. Our work spans quantum estimation theory, variational algorithms, and quantum-enhanced sensing, from foundations through to implementations on near-term devices.

Led by Le Bin Ho, Assistant Professor FRIS, Tohoku University Sendai, Japan
24 Aug 2026
Paper Interference-induced state engineering and Hamiltonian control for noisy collective-spin metrology published in Physical Review A.
5 Aug 2026
Paper Boosting the performance of a Lipkin-Meshkov-Glick quantum battery via symmetry-breaking quenches or a single-mode bosonic charger published in Physical Review A.
26 Jul 2026
Paper Trade-off relation between integrated metrological gain and local dissipation in magnetic-field sensing by quantum spin ensemble published in Advanced Quantum Technologies.
24 Jul 2026
Paper Flexible genetic algorithm for quantum support vector machines published in Machine Learning: Science and Technology.
10 Jul 2026
Le Bin Ho appointed Adjunct Professor at the Faculty of Physics and Engineering Physics, University of Science (HCMUS), VNU-HCM, under the VNU350 Program.
Jul 2026
Paper Feedback-based quantum control for safe and synergistic drug combination design published in Journal of Computational Science.
01 Apr 2026
Leon and Jesus certified as Junior Researchers, FRIS, Tohoku University.
23 Mar 2026
Paper Quantum simulation of strong charge-parity violation and the Peccei–Quinn mechanism accepted in Physical Review D.
24–26 Feb 2026
Mr. Le Duc Tuyen (RIKEN) visits the lab.
04 Feb 2026
Paper Advancing Quantum Process Tomography Through Quantum Compilation accepted in Advanced Quantum Technologies.

Join the lab

We welcome students and researchers interested in quantum estimation theory, variational algorithms, and quantum sensing. Postdoctoral, PhD, and master's positions are open.

Open positions