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Vytautas Zalandauskas

Image of Vytautas Zalandauskas
Email vytautas.zalandauskas@fys.uio.no
Username
Visiting address Gaustadalleen 23A Kristen Nygaards hus 0373 Oslo
Postal address Postboks 1048 Blindern 0316 Oslo

Academic interests

  • Quantum technologies
  • Deep-level defects
  • Density functional theory
  • Electron-phonon coupling
  • Jahn-Teller effect

My research focuses on quantum technology applications based on deep-level defects in semiconductors. I use first-principles density functional theory to investigate their electronic, vibrational and vibronic properties, with particular emphasis on electron–phonon coupling and modelling optical lineshapes. I am especially interested in developing computationally efficient approaches for accurately modeling vibrational and vibronic structure, enabling accurate predictions of emission and absorption spectra of quantum emitters in materials such as diamond, silicon, silicon carbide and hexagonal boron nitride.

Background

  • 2020-2025: PhD Physics, Center for Physical Sciences and Technology, Lithuania
  • 2018-2020: MSc. Optoelectronics, Vilnius University, Lithuania
  • 2014-2018: BSc. Applied Physics, Vilnius University, Lithuania

Partners

Center for Physical Sciences and Technology, Vilnius, Lithuania

 

Tags: LENS, SMN

Publications

  • Žalandauskas, V., Maciaszek, M., Bathen, M. E., Janušonis, J., Paulauskas, T., & Razinkovas, L. (2026). Identification of carbon-related color centers in hBN by high-resolution ab initio photoluminescence modeling. arXiv preprint arXiv:2610.20127.
  • Younesi, A.T., Luu, M.T., Linderälv, C., Žalandauskas, V., Bathen, M.E., Son, N.T., Ohshima, T., Thiering, G., Razinkovas, L. and Ulbricht, R. (2026). Unraveling the Electronic Structure of Silicon Vacancy Centers in 4H‐SiC. Advanced Functional Materials, e76183.
  • Rubin, A. H., Žalandauskas, V., Saha, P., Poudel, R., Teien, A., Hofmann, L., ... & Radulaski, M. (2026). Seeing the forbidden: overcoming optical selection rules through nanophotonic integration. arXiv preprint arXiv:2605.04277.
  • Ho, K. O., Dailledouze, C., Žalandauskas, V., Caruyer, G. L., Maciaszek, M., Roussy, C., ... & Roch, J. F. (2026). Optical Stability and Photophysics of NV Centers in Diamond up to 120 GPa. arXiv preprint arXiv:2606.02399.
  • Žalandauskas, V., Silkinis, R., Razinkovas, L., Younesi, A. T., Luu, M. T., Ulbricht, R., ... & Bathen, M. E. (2026). Impact of strain on electron-phonon coupling of quantum emitters. arXiv preprint arXiv:2602.19640.
  • Žalandauskas, V., Silkinis, R., Vines, L., Razinkovas, L., & Bathen, M. E. (2025). Theory of the divacancy in 4H-SiC: impact of Jahn-Teller effect on optical properties. npj Computational Materials, 11(1), 155.
  • Mohseni, M., Razinkovas, L., Žalandauskas, V., Thiering, G., & Gali, A. (2025). Magneto-optical properties of group-IV vacancy centers in diamond upon hydrostatic pressure. Physical Review B, 112(15), 155201.
  • Silkinis, R., Maciaszek, M., Žalandauskas, V., Bathen, M. E., Vines, L., Alkauskas, A., & Razinkovas, L. (2025). Optical lineshapes of the C center in silicon from ab initio calculations: Interplay of localized modes and bulk phonons. Physical Review B, 111(12), 125136.
  • Silkinis, R., Žalandauskas, V., Thiering, G., Gali, A., Van de Walle, C. G., Alkauskas, A., & Razinkovas, L. (2024). Optical lineshapes for orbital singlet to doublet transitions in a dynamical Jahn-Teller system: the NiV− center in diamond. Physical Review B, 110(7), 075303.
  • Maciaszek, M., Žalandauskas, V., Silkinis, R., Alkauskas, A., & Razinkovas, L. (2023). The application of the SCAN density functional to color centers in diamond. The Journal of Chemical Physics, 159(8).
Published Sep. 1, 2025 2:54 PM - Last modified Oct. 22, 2026 2:29 PM

Research groups