All Publications

Nano-Optics and Biophotonics

All publications

Single quantum emitter Dicke enhancement. Tufarelli, Tommaso; Friedrich, Daniel; Groß, Heiko; Hamm, Joachim; Hess, Ortwin; Hecht, Bert in Phys. Rev. Research (2021).

» arXiv: 2010.12585v2 (2021).

[ Abstract ] [ BibTeX ] [ EndNote ] [ URL ] [ DOI ]

@article{tufarelli2020dicke,
  abstract = {Coupling N identical emitters to the same field mode is a well-established method to enhance light-matter interaction. However, the resulting √N boost of the coupling strength comes at the cost of a “linearized” (effectively semiclassical) dynamics. Here, we instead demonstrate a new approach for enhancing the coupling constant of a single quantum emitter, while retaining the nonlinear character of the light-matter interaction. We consider a single quantum emitter with N nearly degenerate transitions that are collectively coupled to the same field mode. We show that in such conditions an effective Jaynes-Cummings model emerges with a boosted coupling constant of order √N. The validity and consequences of our general conclusions are analytically demonstrated for the instructive case N=2. We further observe that our system can closely match the spectral line shapes and photon autocorrelation functions typical of Jaynes-Cummings physics, proving that quantum optical nonlinearities are retained. Our findings match up very well with recent broadband plasmonic nanoresonator strong-coupling experiments and will, therefore, facilitate the control and detection of single-photon nonlinearities at ambient conditions.},
  author = {Tufarelli, Tommaso and Friedrich, Daniel and Groß, Heiko and Hamm, Joachim and Hess, Ortwin and Hecht, Bert},
  journal = {Phys. Rev. Research},
  keywords = {light-matter-interaction multilevel nano-optics strong-coupling theory},
  month = {07},
  note = {<a href="https://arxiv.org/abs/2010.12585v2" style="font-style: normal;">&raquo; arXiv: 2010.12585v2 (2021)</a>.},
  title = {Single quantum emitter Dicke enhancement},
  year = 2021
}

Near-infrared nanospectroscopy using a low-noise supercontinuum source. Kaltenecker, Korbinian J.; S., Shreesha Rao D.; Rasmussen, Mattias; Lassen, Henrik B.; Kelleher, Edmund J. R.; Krauss, Enno; Hecht, Bert; Mortensen, N. Asger; Grüner-Nielsen, Lars; Markos, Christos; Bang, Ole; Stenger, Nicolas; Jepsen, Peter Uhd in APL Photonics (2021). 6(6) 066106.

[ Abstract ] [ BibTeX ] [ EndNote ] [ URL ] [ DOI ]

@article{Kaltenecker_2021,
  abstract = {Unlocking the true potential of optical spectroscopy on the nanoscale requires development of stable and low-noise laser sources. Here, we have developed a low-noise supercontinuum (SC) source based on an all-normal dispersion fiber pumped by a femtosecond fiber laser and demonstrate high resolution, spectrally resolved near-field measurements in the near-infrared (NIR) region. Specifically, we explore the reduced-noise requirements for aperture-less scattering-type scanning near-field optical microscopy (s-SNOM), including inherent pulse-to-pulse fluctuation of the SC. We use our SC light source to demonstrate the first NIR, spectrally resolved s-SNOM measurement, a situation where state-of-the-art commercial SC sources are too noisy to be useful. We map the propagation of surface plasmon polariton (SPP) waves on monocrystalline gold platelets in the wavelength region of 1.34–1.75 μm in a single measurement, thereby characterizing experimentally the dispersion curve of the SPP in the NIR. Our results represent a technological breakthrough that has the potential to enable a wide range of new applications of low-noise SC sources in near-field studies.},
  author = {Kaltenecker, Korbinian J. and S., Shreesha Rao D. and Rasmussen, Mattias and Lassen, Henrik B. and Kelleher, Edmund J. R. and Krauss, Enno and Hecht, Bert and Mortensen, N. Asger and Grüner-Nielsen, Lars and Markos, Christos and Bang, Ole and Stenger, Nicolas and Jepsen, Peter Uhd},
  journal = {{APL} Photonics},
  keywords = {experiment infrared nano-optics nanospectroscopy near-field plasmon},
  month = {jun},
  number = 6,
  pages = {066106},
  publisher = {{AIP} Publishing},
  title = {Near-infrared nanospectroscopy using a low-noise supercontinuum source},
  volume = 6,
  year = 2021
}

Nanoscale Electrical Excitation of Distinct Modes in Plasmonic Waveguides. Ochs, Maximilian; Zurak, Luka; Krauss, Enno; Meier, Jessica; Emmerling, Monika; Kullock, René; Hecht, Bert in Nano Letters (2021).

[ Abstract ] [ BibTeX ] [ EndNote ] [ URL ] [ DOI ]

Driving plasmonic nanoantennas at perfect impedance matching using generalized coherent perfect absorption. Grimm, Philipp; Razinskas, Gary; Huang, Jer-Shing; Hecht, Bert in nanoph-2021-0048 (2021).

» arXiv: 1907.08174 (2020)

[ Abstract ] [ BibTeX ] [ EndNote ] [ URL ] [ DOI ]

Electrically-driven Yagi-Uda antennas for light. Kullock, René; Ochs, Maximilian; Grimm, Philipp; Emmerling, Monika; Hecht, Bert in Nat Commun (2020). 11(1) 1–7.

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