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Room-temperature upconverted superfluorescence



Superfluorescence (SF) is a unique quantum optics phenomenon arising from the assembly of self-organized and cooperatively coupled emitters. SF produces a short and intense burst of light, ideal for various applications in nanophotonics and optical computing. However, due to the prerequisite for cooperative emitter coupling, SF was conventionally observed in a Stokes-shifted manner under cryogenic conditions in limited systems (for example, atomic gases and perovskite-nanocrystal superlattices). Here we show that room-temperature anti-Stokes-shift SF is achieved in a few randomly assembled or in a single lanthanide-doped upconversion nanoparticle. Moreover, upconverted SF has a 10,000-fold accelerated nanosecond lifetime (τ = 46 ns of SF versus τ = 455.8 μs for normal upconversion luminescence), overcoming the slow decay of conventional upconversion systems. Therefore, the conceptual room-temperature anti-Stokes-shift SF not only lays the foundation for ultrafast upconversion but it also paves a straightforward way to a wide variety of applications that have been limited by the existing SF system.

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Fig. 1: Anti-Stokes-shift upconverted SF in Nd3+-ion-compacted UCNPs.
Fig. 2: Anti-Stokes-shift upconverted SF in CSS UCNP assembly.
Fig. 3: Nd3+-ion cluster is the driving force for upconverted SF.
Fig. 4: Upconverted SF in a single UCNP nanocrystal.

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  1. Altug, H., Englund, D. & Vučković, J. Ultrafast photonic crystal nanocavity laser. Nat. Phys. 2, 484–488 (2006).

    Article  Google Scholar 

  2. Lu, Y.-J. et al. Plasmonic nanolaser using epitaxially grown silver film. Science 337, 450–453 (2012).

    Article  ADS  Google Scholar 

  3. Gourley, P. L. Nanolasers. Sci. Am. 278, 56–61 (1998).

    Article  Google Scholar 

  4. Dicke, R. H. Coherence in spontaneous radiation processes. Phys. Rev. 93, 99–110 (1954).

    Article  ADS  Google Scholar 

  5. Bonifacio, R. & Lugiato, L. A. Cooperative radiation processes in two-level systems: superfluorescence. II. Phys. Rev. A 12, 587–598 (1975).

    Article  ADS  Google Scholar 

  6. Skribanowitz, N., Herman, I. P., MacGillivray, J. C. & Feld, M. S. Observation of Dicke superradiance in optically pumped HF gas. Phys. Rev. Lett. 30, 309–312 (1973).

    Article  ADS  Google Scholar 

  7. Gibbs, H. M., Vrehen, Q. H. F. & Hikspoors, H. M. J. Single-pulse superfluorescence in cesium. Phys. Rev. Lett. 39, 547–550 (1977).

    Article  ADS  Google Scholar 

  8. Florian, R., Schwan, L. O. & Schmid, D. Superradiance and high-gain mirrorless laser activity of O2-centers in KCl. Solid State Commun. 42, 55–57 (1982).

    Article  ADS  Google Scholar 

  9. Malcuit, M. S., Maki, J. J., Simkin, D. J., Boyd & Robert, W. Transition from superfluorescence to amplified spontaneous emission. Phys. Rev. Lett. 59, 1189–1192 (1987).

    Article  ADS  Google Scholar 

  10. Zinovev, P. V. et al. Superradiation in a diphenyl/pyrene crystal. Zh. Eksp. Teor. Fiz. 85, 1945–1952 (1983).

    Google Scholar 

  11. Dai, D. C. & Monkman, A. P. Observation of superfluorescence from a quantum ensemble of coherent excitons in a ZnTe crystal: evidence for spontaneous Bose-Einstein condensation of excitons. Phys. Rev. B 84, 115206 (2011).

    Article  ADS  Google Scholar 

  12. Timothy Noe Ii, G. et al. Giant superfluorescent bursts from a semiconductor magneto-plasma. Nat. Phys. 8, 219–224 (2012).

    Article  Google Scholar 

  13. Rainò, G. et al. Superfluorescence from lead halide perovskite quantum dot superlattices. Nature 563, 671–675 (2018).

    Article  ADS  Google Scholar 

  14. Cherniukh, I. et al. Perovskite-type superlattices from lead halide perovskite nanocubes. Nature 593, 535–542 (2021).

    Article  ADS  Google Scholar 

  15. Findik, G. et al. High-temperature superfluorescence in methyl ammonium lead iodide. Nat. Photon. 15, 676–680 (2021).

    Article  ADS  Google Scholar 

  16. Wu, Y. et al. Upconversion superburst with sub-2 μs lifetime. Nat. Nanotechnol. 14, 1110–1115 (2019).

    Article  ADS  Google Scholar 

  17. Shen, J. et al. Engineering the upconversion nanoparticle excitation wavelength: cascade sensitization of tri-doped upconversion colloidal nanoparticles at 800 nm. Adv. Opt. Mater. 1, 644–650 (2013).

    Article  Google Scholar 

  18. Xie, X. et al. Mechanistic investigation of photon upconversion in Nd3+-sensitized core–shell nanoparticles. J. Am. Chem. Soc. 135, 12608–12611 (2013).

    Article  Google Scholar 

  19. Lee, C. et al. Giant nonlinear optical responses from photon-avalanching nanoparticles. Nature 589, 230–235 (2021).

    Article  ADS  Google Scholar 

  20. Wang, J. et al. Enhancing multiphoton upconversion through energy clustering at sublattice level. Nat. Mater. 13, 157–162 (2014).

    Article  ADS  Google Scholar 

  21. Heinzen, D. J., Thomas, J. E. & Feld, M. S. Coherent ringing in superfluorescence. Phys. Rev. Lett. 54, 677–680 (1985).

    Article  ADS  Google Scholar 

  22. Stokes, G. G. On the change of refrangibility of light. Phil. Trans. R. Soc. 142, 463–562 (1852).

    Article  ADS  Google Scholar 

  23. Wei, Wei et al. Alleviating luminescence concentration quenching in upconversion nanoparticles through organic dye sensitization. J. Am. Chem. Soc. 138, 15130–15133 (2016).

    Article  Google Scholar 

  24. Stokes, G. G. On the change of refrangibility of light. Phil. Trans. R. Soc. 142, 463–562 (1852).

    Article  ADS  Google Scholar 

  25. Auzel, F. Upconversion and anti-Stokes processes with f and d ions in solids. Chem. Rev. 104, 139–173 (2004).

    Article  Google Scholar 

  26. Wang, F. et al. Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping. Nature 463, 1061–1065 (2010).

    Article  ADS  Google Scholar 

  27. Wu, S. et al. Non-blinking and photostable upconverted luminescence from single lanthanide-doped nanocrystals. Proc. Natl Acad. Sci. USA 106, 10917–10921 (2009).

    Article  ADS  Google Scholar 

  28. Hata, R., Yokoshi, N., Ajiki, H. & Ishihara, H. Up-conversion superfluorescence induced by abrupt truncation of coherent field and plasmonic nanocavity. J. Chem. Phys. 151, 224307 (2019).

    Article  ADS  Google Scholar 

  29. Cong, K. et al. Superfluorescence from photoexcited semiconductor quantum wells: magnetic field, temperature, and excitation power dependence. Phys. Rev. B 91, 235448 (2015).

    Article  ADS  Google Scholar 

  30. Roberts, J. E. Lanthanum and neodymium salts of trifluoroacetic acid. J. Am. Chem. Soc. 83, 1087–1088 (1963).

    Google Scholar 

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We acknowledge the Electron Microscopy Facility at the University of Massachusetts Chan Medical School for assistance on the transmission electron microscopy and SEM characterizations. This material is based on work supported, in part, by the US Army Research Laboratory and the US Army Research Office under W911NF2110283.

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Authors and Affiliations



S.F.L. and G.H. conceived the study., S.F.L., G.H., K.H. and K.K.G. wrote the manuscript. All the authors provided feedback and helped with the research, data analysis and manuscript preparation.

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Correspondence to Kory Kevin Green, Gang Han or Shuang Fang Lim.

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Huang, K., Green, K.K., Huang, L. et al. Room-temperature upconverted superfluorescence. Nat. Photon. 16, 737–742 (2022).

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