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Identifying the quantum fingerprint of plasmon polaritons

Coherent multidimensional spectroscopy with nanoscale spatial resolution was used to directly probe a plasmon polariton quantum wave packet. To reproduce these results an improved quantum model of photoemission was required, in which the coherent coupling between plasmons and electrons is accounted for with the plasmon excitations extending beyond a two-level model.

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Fig. 1: Observing a plasmonic quantum wave packet using 2D nanoscopy.


  1. Vahlbruch, H., Mehmet, M., Danzmann, K. & Schnabel, R. Detection of 15 dB squeezed states of light and their application for the absolute calibration of photoelectric quantum efficiency. Phys. Rev. Lett. 117, 110801 (2016). This article demonstrates the squeezing of the quantum noise of light below the shot-noise limit.

    Article  ADS  Google Scholar 

  2. Altewischer, E., van Exter, M. P. & Woerdman, J. P. Plasmon-assisted transmission of entangled photons. Nature 418, 304–306 (2002). This article demonstrates that plasmon polaritons supported by nanoholes in a metal film maintain photon entanglement.

    Article  ADS  Google Scholar 

  3. Gelzinis, A., Augulis, R., Butkus, V., Robert, B. & Valkunas, L. Two-dimensional spectroscopy for non-specialists. Biochim. Biophys. Acta Bioenerg. 1860, 271–285 (2019). This article provides an introduction to 2D optical spectroscopy.

    Article  Google Scholar 

  4. Aeschlimann, M. et al. Coherent two-dimensional nanoscopy. Science 333, 1723–1726 (2011). This is the original article in which we introduced the method of coherent 2D nanoscopy used in this study.

    Article  ADS  Google Scholar 

  5. Huber, B. et al. Space- and time-resolved UV-to-NIR surface spectroscopy and 2D nanoscopy at 1 MHz repetition rate. Rev. Sci. Instrum. 90, 113103 (2019). This article provides an overview of the apparatus used in this study demonstrating the high spatial and temporal resolution achieved.

    Article  ADS  Google Scholar 

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This is a summary of: Pres, S. et al. Detection of a plasmon-polariton quantum wave packet. Nat. Phys. (2023).

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Identifying the quantum fingerprint of plasmon polaritons. Nat. Phys. 19, 622–623 (2023).

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