Liang Wu

Assistant Professor
Research Areas: 
Condensed Matter, Ultrafast optics & Terahertz
DRL 2N32
  • Assistant Professor, University of Pennsylvania (Jul. 1, 2018 - present )                                      
  • Postdoctoral Fellow, University of California, Berkeley (Jan. 2016 - Jun. 2018)

Honors & Awards:

  • Forbes 30 under 30 in Science (2018)
  • Michelson Postdoctoral Prize Lectureship (2017)
  • Richard L. Greene Dissertation Award in Experimental Condensed Matte Physics,  American Physical Society (2017)
  • Chinese Government Award For Outstanding Self-Financed Students Aboard (2016)
  • Pacemaker for Outstanding Students, Nanjing University (2009)
  • National Scholarship (2008)

Ph.D. Physics, Johns Hopkins University (2015)

M.A. Physics, Johns Hopkins University (2012)

B.S. Physics, Nanjing University (2010)

Research Interests: 

I am an experimental condensed matter physicist with a strong interest in light-matter interactions.  I develop and utilize time-resolved and nonlinear optical techniques in both the terahertz (THz) and optical frequency regimes to study and control properties of materials broadly known as ''quantum materials.’’ In this class of matter, collective phases and properties defy a classical description, often leading to an exotically rich range of emergent phenomena.  My research interests include but are not limited to, topological insulators and semimetals, quantum antiferromagnets, spin liquids and topological superconductors.

Selected Publications: 
  • Liang Wu*, A. Little, E. E. Aldape, D. Rees, E. Thewalt, P. Lampen-Kelley, A. Banerjee, C. A. Bridges, J.-Q. Yan, D. Boone, S. Patankar, D. Goldhaber-Gordo, D. Mandrus, S. E. Nagler, E. Altman, and J. Orenstein. Field evolution of magnons in α-RuCl3 by high-resolution polarized terahertz spectroscopyarXiv:1806.00855
  • ​S. Patankar, Liang Wu, B. Z. Lu, M. Rai, J. D. Tran, T. Morimoto, D. Parker, A. Grushin, N. L. Nair, J. G. Analytis, J. E. Moore, J. Orenstein, D. H. Torchinsky.  Resonance-enhanced optical nonlinearity in the Weyl semimetal TaAs.  arXiv:1804.06973
  • T. Higo, H. Man, D. B. Gopman, Liang Wu, Y. P. Kabanov, O. M. J. van’t Erve, D. Rees, Y. F. Li, S. Patankar, M. Ikhlas, C. L. Chien, R. D. Shull, J. Orenstein, and S. Nakatsuji. Large magneto-optical Kerr effect and imaging of magnetic octupole domains in an antiferromagnetic metal. Nature Photonics. 12, 73-78 (2018)
  • A. Little†, Liang Wu,,P. Kelley, A. Banerjee, D. Mandrus, S. Nagler and J. Orenstein. Antiferromagnetic resonance and terahertz continuum in αRuCl3Phys. Rev. Lett.  119, 227201 (2017)
  • Liang Wu, S. Patankar, T. Morimoto, N. L. Nair, E. Thewalt, A. Little, J. Analytis, J. E. Moore and J. W. Orenstein. Giant anisotropic nonlinear optical response in transition metal monopnictide Weyl semimetals. Nature Physics 13, 350-355 (2017)
  • Liang Wu, M. Salehi, N. Koirala, J. Moon, S. Oh and N. P. Armitage. Quantized Faraday and Kerr rotation and axion electrodynamics of a 3D topological insulatorScience 354, 1124-1127 (2016) 
  • Liang Wu, W. K. Tse, M. Brahlek, C. M. Morris, R. Valdes Aguilar, N. Koirala, S. Oh and N. P. Armitage. High-resolution Faraday rotation and electron-phonon coupling in surface states of the bulk-insulating topological insulator Cu0.02Bi2Se3Phys. Rev. Lett. 115, 217602 (2015)
  • Liang Wu, M. Brahlek, R. Valdes Aguilar, A. V. Stier, C. M. Morris, Y. Lubashevsky, L. S. Bilbro, N. Bansal, S. Oh, N. P. Armitage. A sudden collapse in transport lifetime through the topological phase transition in (Bi1xInx)2Se3Nature Physics 9, 410-414 (2013)
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