Thursday, July 9, 2026
No menu items!
HomeNatureObservation of Floquet rotational super-radiance

Observation of Floquet rotational super-radiance

  • Galiffi, E. et al. Photonics of time-varying media. Adv. Photonics 4, 014002 (2022).

  • Engheta, N. Four-dimensional optics using time-varying metamaterials. Science 379, 1190–1191 (2023).

    Article 
    ADS 
    MathSciNet 
    CAS 
    PubMed 

    Google Scholar
     

  • Jaffray, W. et al. Spatio-spectral optical fission in time-varying subwavelength layers. Nat. Photon. 19, 558–566 (2025).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Konforty, N. et al. Second harmonic generation and nonlinear frequency conversion in photonic time-crystals. Light Sci. Appl. 14, 152 (2025).

    Article 
    ADS 
    CAS 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Ren, Y. et al. Observation of momentum-gap topology of light at temporal interfaces in a time-synthetic lattice. Nat. Commun. 16, 707 (2025).

    Article 
    ADS 
    CAS 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Ozlu, M. G., Mkhitaryan, V., Fruhling, C. B., Boltasseva, A. & Shalaev, V. M. Floquet engineering of polaritonic amplification in dispersive photonic time crystals. Phys. Rev. Res. 7, 023214 (2025).

    Article 
    CAS 

    Google Scholar
     

  • Moussa, H. et al. Observation of temporal reflection and broadband frequency translation at photonic time interfaces. Nat. Phys. 19, 863–868 (2023).

    Article 
    CAS 

    Google Scholar
     

  • Yu, Z. & Fan, S. Complete optical isolation created by indirect interband photonic transitions. Nat. Photon. 3, 91–94 (2009).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Estep, N. A., Sounas, D. L., Soric, J. & Alù, A. Magnetic-free non-reciprocity and isolation based on parametrically modulated coupled-resonator loops. Nat. Phys. 10, 923–927 (2014).

    Article 
    CAS 

    Google Scholar
     

  • Harwood, A. C. et al. Space-time optical diffraction from synthetic motion. Nat. Commun. 16, 5147 (2025).

    Article 
    ADS 
    CAS 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Penrose, R. Gravitational collapse: the role of general relativity. Riv. Nuovo Cimento 1, 252–276 (1969).


    Google Scholar
     

  • Penrose, R. & Floyd, R. M. Extraction of rotational energy from a black hole. Nat. Phys. Sci. 229, 177–179 (1971).

    Article 
    ADS 

    Google Scholar
     

  • Bekenstein, J. D. Black holes and entropy. Phys. Rev. D 7, 2333–2346 (1973).

    Article 
    ADS 
    MathSciNet 

    Google Scholar
     

  • Hawking, S. W. Particle creation by black holes. Commun. Math. Phys. 43, 199–220 (1975).

    Article 
    ADS 
    MathSciNet 

    Google Scholar
     

  • Zel’dovich, Ya. B. Generation of waves by a rotating body. ZhETF Pis. Red. 14, 270–272 (1971).

    ADS 

    Google Scholar
     

  • Zel’dovich, Ya. B., Rozhanskij, L. V. & Starobinskii, A. A. Rotating bodies and electrodynamics in a rotating reference frame. Radiofizika 29, 1008–1016 (1986).

    ADS 
    MathSciNet 

    Google Scholar
     

  • Zel’dovich, Ya. B. Amplification of cylindrical electromagnetic waves reflected from a rotating body. Sov. Phys. JETP 35, 1085–1087 (1972).

    ADS 

    Google Scholar
     

  • Torres, T. et al. Rotational superradiant scattering in a vortex flow. Nat. Phys. 13, 833–836 (2017).

    Article 
    CAS 

    Google Scholar
     

  • Cromb, M. et al. Amplification of waves from a rotating body. Nat. Phys. 16, 1069–1073 (2020).

    Article 
    CAS 

    Google Scholar
     

  • Braidotti, M. C. et al. Amplification of electromagnetic fields by a rotating body. Nat. Commun. 15, 5453 (2024).

    Article 
    ADS 
    CAS 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Cromb, M., Braidotti, M. C., Vinante, A., Faccio, D. & Ulbricht, H. Creation of a black hole bomb instability in an electromagnetic system. Sci. Adv. 11, eadz4595 (2025).

    Article 
    CAS 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Fante, R. Transmission of electromagnetic waves into time-varying media. IEEE Trans. Antennas Propag. 19, 417–424 (1971).

    Article 
    ADS 

    Google Scholar
     

  • Wang, X. et al. Expanding momentum bandgaps in photonic time crystals through resonances. Nat. Photon. 19, 149–155 (2025).

    Article 
    ADS 

    Google Scholar
     

  • Feis, J., Weidemann, S., Sheppard, T., Price, H. M. & Szameit, A. Space-time-topological events in photonic quantum walks. Nat. Photon. 19, 518–525 (2025).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Feinberg, J., Fernandes, D. E., Shapiro, B. & Silveirinha, M. G. Plasmonic time crystals. Phys. Rev. Lett. 134, 183801 (2025).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Nasari, H. et al. Observation of chiral state transfer without encircling an exceptional point. Nature 605, 256–261 (2022).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Shaltout, A. M., Shalaev, V. M. & Brongersma, M. L. Spatiotemporal light control with active metasurfaces. Science 364, eaat3100 (2019).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Wang, X. et al. Metasurface-based realization of photonic time crystals. Sci. Adv. 9, eadg7541 (2023).

    Article 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Park, J. et al. Spontaneous emission decay and excitation in photonic time crystals. Phys. Rev. Lett. 135, 133801 (2025).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Pacheco-Peña, V., Fink, M. & Engheta, N. Temporal chirp, temporal lensing, and temporal routing via space-time interfaces. Phys. Rev. B 111, L100306 (2025).

    Article 
    ADS 

    Google Scholar
     

  • Liberal, I. & Manjavacas, A. Synthetic crystal rotation with spacetime metamaterials. Phys. Rev. Lett. 136, 146903 (2026).

  • Sounas, D. L., Caloz, C. & Alù, A. Giant non-reciprocity at the subwavelength scale using angular momentum-biased metamaterials. Nat. Commun. 4, 2407 (2013).

    Article 
    ADS 
    PubMed 

    Google Scholar
     

  • Sounas, D. L. & Alù, A. Non-reciprocal photonics based on time modulation. Nat. Photon. 11, 774–783 (2017).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Cassedy, E. S. & Oliner, A. A. Dispersion relations in time-space periodic media: Part I—Stable interactions. Proc. IEEE 51, 1342–1359 (1963).

    Article 
    ADS 

    Google Scholar
     

  • Taravati, S., Chamanara, N. & Caloz, C. Nonreciprocal electromagnetic scattering from a periodically space–time modulated slab and application to a quasisonic isolator. Phys. Rev. B 96, 165144 (2017).

    Article 
    ADS 

    Google Scholar
     

  • Noether, E. Invariante Variationsprobleme. Nachr. Ges. Wiss. Gött. Math. Kl. 1918, 235–257 (1918).


    Google Scholar
     

  • Lustig, E., Sharabi, Y. & Segev, M. Topological aspects of photonic time crystals. Optica 5, 1390 (2018).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Choquet-Bruhat, Y. General Relativity and Einstein’s Equations (Oxford Univ. Press, 2009).

  • Braidotti, M. C. et al. Measurement of Penrose superradiance in a photon superfluid. Phys. Rev. Lett. 128, 013901 (2022).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Reimann, R. et al. GHz Rotation of an optically trapped nanoparticle in vacuum. Phys. Rev. Lett. 121, 033602 (2018).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Bekenstein, J. D. & Schiffer, M. The many faces of superradiance. Phys. Rev. D 58, 064014 (1998).

    Article 
    ADS 
    MathSciNet 

    Google Scholar
     

  • Yu, D. et al. Comprehensive review on developments of synthetic dimensions. Photonics Insights 4, R06 (2025).

    Article 

    Google Scholar
     

  • Gibson, G. M. et al. Reversal of orbital angular momentum arising from an extreme Doppler shift. Proc. Natl Acad. Sci. USA 115, 3800–3803 (2018).

    Article 
    ADS 
    CAS 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Asgari, M. M. et al. Theory and applications of photonic time crystals: a tutorial. Adv. Opt. Photonics 16, 958–1063 (2024).

    Article 

    Google Scholar
     

  • Khurgin, J. B. Photonic time crystals and parametric amplification: similarity and distinction. ACS Photonics 11, 2150–2159 (2024).

    Article 
    CAS 

    Google Scholar
     

  • Maghrebi, M. F., Jaffe, R. L. & Kardar, M. Spontaneous emission by rotating objects: a scattering approach. Phys. Rev. Lett. 108, 230403 (2012).

    Article 
    ADS 
    PubMed 

    Google Scholar
     

  • Zhao, R., Manjavacas, A., García De Abajo, F. J. & Pendry, J. B. Rotational quantum friction. Phys. Rev. Lett. 109, 123604 (2012).

    Article 
    ADS 
    PubMed 

    Google Scholar
     

  • Oka, T. & Kitamura, S. Floquet engineering of quantum materials. Annu. Rev. Condens. Matter Phys. 10, 387–408 (2019).

    Article 
    ADS 

    Google Scholar
     

  • Duggan, R., Mann, S. A. & Alù, A. Nonreciprocal photonic topological order driven by uniform optical pumping. Phys. Rev. B 102, 100303 (2020).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • de Oliveira, M. & Ambrosio, A. Subcycle modulation of light’s orbital angular momentum via a Fourier space-time transformation. Sci. Adv. 11, eadr6678 (2025).

    Article 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Lee, K. et al. Analogs of spontaneous emission and lasing in photonic time crystals. Phys. Rev. Lett. 136, 093802 (2026).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • RELATED ARTICLES

    Most Popular

    Recent Comments