QTM LabQuantum Technologies and Metamaterials Lab

Research Area

Complex-frequency electrodynamics and non-Hermitian scattering

Selected QTM Lab publications on pole-zero engineering, complex-frequency excitations, virtual absorption, scattering anomalies, and waveform-driven resonant response.

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Relevant Publications

Papers most closely tied to this area. See more work on the Publications page, or the complete record on Google Scholar.

  1. A. Krasnok and D. Seletskiy, “Complex-Frequency Chirped Pulses for Trajectory-Resolved Scattering,”ACS Photonics (2026), published online August 4, 2026.doi:10.1021/acsphotonics.6c00602
  2. A. Krasnok, “Constant-Amplitude 2π Phase Modulation from Topological Pole-Zero Winding,”Physical Review Letters 137(5), 053801 (2026).doi:10.1103/xt46-rfjs
  3. S. Kim, A. Krasnok, and A. Alù, “Complex-Frequency Excitations in Photonics and Wave Physics,”Science 387(6741), eado4128 (2025).doi:10.1126/science.ado4128
  4. S. Kim, S. Lepeshov, A. Krasnok, and A. Alù, “Beyond Bounds on Light Scattering with Complex Frequency Excitations,”Physical Review Letters 129(20), 203601 (2022).doi:10.1103/PhysRevLett.129.203601
  5. D. Trivedi, A. Madanayake, and A. Krasnok, “Revealing Invisible Scattering Poles with Complex-Frequency Signals,”Journal of Applied Physics 137(24), 243103 (2025).doi:10.1063/5.0262971
  6. A. C. Araujo-Martinez, A. Krasnok, S. V. Kutsaev, A. H. Seltzman, and A. Yu. Smirnov, “Virtual Critical Coupling in High-Power Resonant Systems,”IEEE Transactions on Plasma Science 53(9), 2410-2418 (2025).doi:10.1109/TPS.2025.3590305
  7. G. P. Zouros, I. Loulas, E. Almpanis, A. Krasnok, and K. L. Tsakmakidis, “Anisotropic Virtual Gain and Large Tuning of Particles’ Scattering by Complex-Frequency Excitations,”Communications Physics 7, 283 (2024).doi:10.1038/s42005-024-01772-w
  8. D. G. Baranov, A. Krasnok, and A. Alù, “Coherent Virtual Absorption Based on Complex Zero Excitation for Ideal Light Capturing,”Optica 4(12), 1457-1461 (2017).doi:10.1364/OPTICA.4.001457
  9. Y. Ra’di, A. Krasnok, and A. Alù, “Virtual Critical Coupling,”ACS Photonics 7(6), 1468-1475 (2020).doi:10.1021/acsphotonics.0c00165