Novel spectroscopies of electron systems

Nonlinear terahertz spectroscopy

Recent Publications:

  • A. Gomez Salvador et al., Gap Inhomogeneity in Cuprates: Two-Dimensional Josephson Echo Spectroscopy, arXiv:2509.23856
  • A. Gomez Salvador et al., Two-dimensional spectroscopy of bosonic collective excitations in disordered many-body systems, arXiv:2501.16856
  • A. Gomez Salvador, P. E. Dolgirev, M. H. Michael, A. Liu, D. Pavicevic, M. Fechner, A. Cavalleri, E. Demler, Principles of 2D terahertz spectroscopy..., Phys. Rev. B 110:094514 (2024). https://doi.org/10.1103/PhysRevB.110.094514
  • A. Liu et al., Probing Inhomogeneous Cuprate Superconductivity by Terahertz Josephson Echo Spectroscopy, Nat. Phys. 20:1751 (2024). https://doi.org/10.1038/s41567-024-02643-5

Local probes, quantum enhanced sensing

Recent Publications:

  • J. B. Curtis, A. Yacoby, E. Demler, Non-Gaussian Noise Magnetometry Using Local Spin Qubits, arXiv:2505.03877
  • J. B. Curtis, N. Maksimovic, N. Poniatowski, A. Yacoby, B. Halperin, P. Narang, E. Demler, Probing the BKT vortex unbinding transition..., Phys. Rev. B 110:144518 (2024). https://doi.org/10.1103/PhysRevB.110.144518
  • J. Rovny et al., New opportunities in condensed matter physics for nanoscale quantum sensors, Nat. Rev. Phys. 6:753 (2024). https://doi.org/10.1038/s42254-024-00775-4
  • P. E. Dolgirev et al., Local noise spectroscopy of Wigner crystals in two-dimensional materials, Phys. Rev. Lett. 132:246504 (2024). https://doi.org/10.1103/PhysRevLett.132.246504
  • F. Machado, E. Demler, N. Yao, S. Chatterjee, Quantum noise spectroscopy of dynamical critical phenomena, Phys. Rev. Lett. 131:070801 (2023). https://doi.org/10.1103/PhysRevLett.131.070801
  • S. Chatterjee, P. Dolgirev, I. Esterlis, A. Zibrov, M. Lukin, N. Yao, E. Demler, Single-spin qubit magnetic spectroscopy of two dimensional superconductivity, Phys. Rev. Research 4:L012001 (2022). https://doi.org/10.1103/PhysRevResearch.4.L012001
  • P. Dolgirev et al., Characterizing two-dimensional superconductivity via nanoscale noise magnetometry, Phys. Rev. B 105:024507 (2022). https://doi.org/10.1103/PhysRevB.105.024507
  • S. Chatterjee, J. Rodriguez-Nieva, E. Demler, Diagnosing phases of magnetic insulators via noise magnetometry, Phys. Rev. B 99:104425 (2019). https://doi.org/10.1103/PhysRevB.99.104425
  • J. Rodriguez-Nieva, K. Agarwal, T. Giamarchi, B. Halperin, M. Lukin, E. Demler, Probing one-dimensional systems via noise magnetometry, Phys. Rev. B 98:195433 (2018).

New optical signatures of correlated electron states

Recent Publications:

  • P. Dolgirev, M. Michael, J. Curtis, D. Nicoletti, M. Buzzi, M. Fechner, A. Cavalleri, E. Demler, Theory for Anomalous Terahertz Emission in Striped Cuprate Superconductors, Phys. Rev. B 108:L180508 (2023). https://doi.org/10.1103/PhysRevB.108.L180508
  • D. Nicoletti, M. Buzzi, M. Fechner, P. E. Dolgirev, M. H. Michael, J. B. Curtis, E. Demler, G. D. Gu, A. Cavalleri, Coherent emission from surface Josephson plasmons in striped cuprates, PNAS 119:e2211670119 (2022). https://doi.org/10.1073/pnas.2211670119
  • N. Poniatowski, J. Curtis, C. Bottcher, V. Galitski, A. Yacoby, P. Narang, E. Demler, Surface Cooper pair spin waves in triplet superconductors, Phys. Rev. Lett. 129:237002 (2022). https://doi.org/10.1103/PhysRevLett.129.237002