Krivitsky group (A*STAR IMRE)
- Institution
- A*STAR (Agency for Science, Technology and Research)
- Lab / Centre
- Institute of Materials Research and Engineering (IMRE) — Quantum Technologies for Engineering department
- Location
- Singapore
Leonid Krivitsky's group at A*STAR IMRE works on single-photon instrumentation, quantum imaging with undetected photons, and quantum sensing. The lab pioneered mid-infrared microscopy and spectroscopy using SPDC photon pairs detected in the visible — decoupling sensing and detection wavelengths so silicon detectors can image molecular fingerprints in the mid-IR. Krivitsky heads the Quantum Technologies for Engineering department at IMRE; the group also develops integrated single-photon sources and detectors used by Singapore's broader quantum programme alongside CQT and SpeQtral.
Current focus: Quantum metrology, sensing and information processing — Per A*STAR's profile (research.a-star.edu.sg): scientific interests in quantum metrology and sensing and quantum information processing, pursued within the Quantum Technologies for Engineering department at A*STAR's Institute of Materials Research and Engineering (IMRE).
Milestones
- 2025 Quantum-enhanced imaging and metrology with undetected photons via squeezed-light homodyne detection paper
- 2022-06 Broadband quantum spectroscopy at the fingerprint mid-infrared region paper
- 2021-11 Broadband diffraction of correlated photons from crystal superlattices (multi-crystal nonlinear interferometer) paper
- 2020-11 Microscopy with undetected photons in the mid-infrared paper
- 2016-01 Infrared spectroscopy with visible light — foundational demonstration of spectroscopy via undetected photons paper
People
- Leonid Krivitsky — Principal Scientist / Group Leader — Head, Quantum Technologies for Engineering, IMRE ↗
Funding
- A*STAR (Agency for Science, Technology and Research) — Host agency; core institutional funding for IMRE and the Quantum Technologies for Engineering department
- National Research Foundation (NRF) Singapore — Quantum Engineering Programme — National competitive grants supporting quantum-sensing and single-photon instrumentation work
References
- Kalashnikov, Paterova, Kulik, Krivitsky, Nature Photonics 10, 98 (2016) — infrared spectroscopy with visible light (paper)
- Kviatkovsky et al., Science Advances 6, eabd0264 (2020) — mid-IR microscopy with undetected photons (paper)
- Broadband quantum spectroscopy at the fingerprint mid-IR region, ACS Photonics 9, 2151 (2022) (paper)
- Broadband diffraction of correlated photons from crystal superlattices, Quantum Sci. Technol. (2021) (paper)
- Quantum-enhanced imaging and metrology with undetected photons via squeezed-light homodyne detection, Sci. Rep. (2025) (paper)