CV

Research interests

Theoretical condensed matter physics: symmetry constraints in interacting systems, non-equilibrium quantum dynamics, fundamentals of band theory, topological materials discovery, topological mechanics, noise-resilient quantum information processing

Preprints

1. Else, D.V., Po, H. C., & Watanabe, H. Fragile topological phases in interacting systems. arXiv 1809.02128.
2. Po, H. C., Zou, L., Senthil, T., & Vishwanath, A. Faithful Tight-binding Models and Fragile Topology of Magic-angle Bilayer Graphene. arXiv 1808.02482.
3. Tang, F., Po, H. C., Vishwanath, A. & Wan, X. Towards ideal topological materials: Comprehensive database searches using symmetry indicators. arXiv 1807.09744.
4. Tang, F., Po, H. C., Vishwanath, A. & Wan, X. Topological Materials Discovery By Large-order symmetry indicators. arXiv 1806.04128.
5. Tang, F., Po, H. C., Vishwanath, A. & Wan, X. Efficient Topological Materials Discovery Using Symmetry Indicators. arXiv 1805.07314.
6. Fidkowski, L., Po, H. C., Potter, A. C. & Vishwanath, A. Interacting invariants for Floquet phases of fermions in two dimensions. arXiv 1703.07360.

Peer-reviewed

1. Zou, L., Po, H. C., Vishwanath, A. & Senthil, T. Band Structure of Twisted Bilayer Graphene: Emergent Symmetries, Commensurate Approximants and Wannier Obstructions. Phys. Rev. B 98, 085435 (2018). [arXiv 1806.07873]
2. Po, H. C., Zou, L., Vishwanath, A. & Senthil, T. Origin of Mott insulating behavior and superconductivity in twisted bilayer graphene. Phys. Rev. X 8, 031089 (2018). [arXiv 1803.09742]
3. Khalaf, E., Po, H. C., Vishwanath, A. & Watanabe, H. Symmetry indicators and anomalous surface states of topological crystalline insulators. Phys. Rev. X 8, 031070 (2018). [arXiv 1711.11589 ]
4. Po, H. C., Watanabe, H. & Vishwanath, A. Fragile Topology and Wannier Obstructions. Phys. Rev. Lett. 121, 126402 (2018). (Editors’ suggestion) [arXiv 1709.06551]
5. Watanabe, H.^*, Po, H. C.^* & Vishwanath, A. Structure and topology of band structures in the 1651 magnetic space groups. Sci. Adv. 4, eaat8685 (2018). [arXiv 1707.01903 ]
6. Chen, R.^*, Po, H. C.^*, Neaton, J. B. & Vishwanath, A. Topological materials discovery using electron filling constraints. Nat. Phys. 14, 55-61 (2018). [arXiv 1611.06860]
7. Po, H. C., Fidkowski, L., Vishwanath, A. & Potter, A. C. Radical chiral floquet phases in a periodically driven Kitaev model and beyond. Phys. Rev. B 96, 245116 (2017). (Editors’ suggestion) [arXiv 1701.01440]
8. Po, H. C., Watanabe H., Jian, C.-M. & Zaletel, M. P. Lattice homotopy constraints on phases of quantum magnets. Phys. Rev. Lett. 119, 127202 (2017). [arXiv 1703.06882]
9. Liu, G.-Q., Xing, J., Ma, W.-L, Wang, P., Li, C.-H, Po, H. C., Zhang, Y.-R., Fan, H., Liu, R.-B & Pan, X.-Y. Single-shot readout of a nuclear spin weakly coupled to a nitrogen-vacancy center at room temperature. Phys. Rev. Lett. 118, 150504 (2017). [arXiv 1612.07944]
10. Morimoto, T., Po, H. C. & Vishwanath, A. Floquet topological phases protected by time glide symmetry. Phys. Rev. B 95, 195155 (2017). (Editors’ suggestion) [arXiv 1703.02553]
11. Po, H. C., Vishwanath, A. & Watanabe, H. Symmetry-based indicators of band topology in the 230 space groups. Nat. Commun. 8, 50 (2017). [arXiv 1703.00911]
12. Po, H. C., Fidkowski, L., Morimoto, T., Potter, A. C. & Vishwanath, A. Chiral Floquet phases of many-body localized bosons. Phys. Rev. X 6, 041070 (2016). [arXiv 1609.00006]
13. Po, H. C., Watanabe, H., Zaletel, M. P. & Vishwanath, A. Filling-enforced quantum band insulators in spin-orbit coupled crystals. Sci. Adv. 2, e1501782 (2016). [arXiv 1506.03816]
14. Po, H. C., Bahri, Y. & Vishwanath, A. Phonon analog of topological nodal semimetals. Phys. Rev. B 93, 205158 (2016). (Editors’ suggestion) [arXiv 1410.1320]
15. Watanabe, H., Po, H. C., Zaletel, M. P. & Vishwanath, A. Filling-enforced gaplessness in band structures of the 230 space groups. Phys. Rev. Lett. 117, 096404 (2016). [arXiv 1603.05646] (Highlighted in the Journal Club for Condensed Matter Physics, August 2017)
16. Po, H. C. & Zhou, Q. A two-dimensional algebraic quantum liquid produced by an atomic simulator of the quantum Lifshitz model. Nat. Commun. 6 8012 (2015). [arXiv 1408.6421]
17. Watanabe, H., Po, H. C., Vishwanath, A. & Zaletel, M. P. Filling constraints for spin-orbit coupled insulators in symmorphic and nonsymmorphic crystals. Proc. Natl. Acad. Sci. 112, 14551– 14556 (2015). [arXiv 1505.04193]
18. Liu, G.-Q., Jiang, Q.-Q, Chang, Y.-C., Liu, D.-Q., Li, W.-X., Gu, C.-Z., Po, H. C., Zhang, W.-X., Zhao, N. & Pan, X.-Y. Protection of centre spin coherence by dynamic nuclear spin polarization in diamond. Nanoscale 6, 10134–10139 (2014). [arXiv 1305.6424]
19. Po, H. C., Chen, W. & Zhou, Q. Non-Luttinger quantum liquid of one-dimensional spin-orbit-coupled bosons. Phys. Rev. A 90, 011602 (2014).
20. Wei, B.-B., Chen, S.-W., Po, H. C. & Liu, R.-B. Phase transitions in the complex plane of physical parameters. Sci. Rep. 4, 5202 (2014). [arXiv 1401.3808]
21. Liu, G.-Q.^*, Po, H. C.^*, Du, J., Liu, R.-B. & Pan, X.-Y. Noise-resilient quantum evolution steered by dynamical decoupling. Nat. Commun. 4, 2254 (2013). [arXiv 1310.4120]