Quantum-coherence-enhanced plasmonic nanostructures for near-field spectroscopy and control (presentation video)

2014 ◽  
Author(s):  
Dmitri V. Voronine
Keyword(s):  
Quantum Coherence ◽  
Near Field ◽  
Plasmonic Nanostructures ◽  
Field Spectroscopy ◽  
And Control

scholarly journals Tip-enhanced strong coupling spectroscopy, imaging, and control of a single quantum emitter

2019 ◽  
Vol 5 (7) ◽  
pp. eaav5931 ◽  
Author(s):  
Kyoung-Duck Park ◽  
Molly A. May ◽  
Haixu Leng ◽  
Jiarong Wang ◽  
Jaron A. Kropp ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Room Temperature ◽  
Information Science ◽  
Near Field ◽  
Plasmonic Nanostructures ◽  
Single Quantum ◽  
Single Emitter ◽  
Control Light ◽  
And Control ◽  
Mode Volume

Optical cavities can enhance and control light-matter interactions. This level of control has recently been extended to the nanoscale with single emitter strong coupling even at room temperature using plasmonic nanostructures. However, emitters in static geometries, limit the ability to tune the coupling strength or to couple different emitters to the same cavity. Here, we present tip-enhanced strong coupling (TESC) with a nanocavity formed between a scanning plasmonic antenna tip and the substrate. By reversibly and dynamically addressing single quantum dots, we observe mode splitting up to 160 meV and anticrossing over a detuning range of ~100 meV, and with subnanometer precision over the deep subdiffraction-limited mode volume. Thus, TESC enables previously inaccessible control over emitter-nanocavity coupling and mode volume based on near-field microscopy. This opens pathways to induce, probe, and control single-emitter plasmon hybrid quantum states for applications from optoelectronics to quantum information science at room temperature.

Femtosecond near-field spectroscopy of a single GaAs quantum wire

1999 ◽  
Vol 75 (22) ◽  
pp. 3500-3502 ◽  
Author(s):  
T. Guenther ◽  
V. Emiliani ◽  
F. Intonti ◽  
C. Lienau ◽  
T. Elsaesser ◽  
...  
Keyword(s):  
Quantum Wire ◽  
Near Field ◽  
Field Spectroscopy

scholarly journals Optical near-field mapping of plasmonic nanostructures prepared by nanosphere lithography

2018 ◽  
Vol 9 ◽  
pp. 1536-1543 ◽  
Author(s):  
Gitanjali Kolhatkar ◽  
Alexandre Merlen ◽  
Jiawei Zhang ◽  
Chahinez Dab ◽  
Gregory Q Wallace ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Hot Spots ◽  
Near Field ◽  
Nanosphere Lithography ◽  
Plasmonic Nanostructures ◽  
Far Field ◽  
Optical Images ◽  
Spatial Frequencies ◽  
Comparison Of The Results ◽  
Non Destructive

We introduce a simple, fast, efficient and non-destructive method to study the optical near-field properties of plasmonic nanotriangles prepared by nanosphere lithography. Using a rectangular Fourier filter on the blurred signal together with filtering of the lower spatial frequencies to remove the far-field contribution, the pure near-field contributions of the optical images were extracted. We performed measurements using two excitation wavelengths (532.1 nm and 632.8 nm) and two different polarizations. After the processing of the optical images, the distribution of hot spots can be correlated with the topography of the structures, as indicated by the presence of brighter spots at the apexes of the nanostructures. This technique is validated by comparison of the results to numerical simulations, where agreement is obtained, thereby confirming the near-field nature of the images. Our approach does not require any advanced equipment and we suggest that it could be applied to any type of sample, while keeping the measurement times reasonably short.

Nanoscale-resolved chemical identification of thin organic films using infrared near-field spectroscopy and standard Fourier transform infrared references

2015 ◽  
Vol 106 (2) ◽  
pp. 023113 ◽  
Author(s):  
Stefan Mastel ◽  
Alexander A. Govyadinov ◽  
Thales V. A. G. de Oliveira ◽  
Iban Amenabar ◽  
Rainer Hillenbrand
Keyword(s):  
Fourier Transform ◽  
Near Field ◽  
Fourier Transform Infrared ◽  
Organic Films ◽  
Chemical Identification ◽  
Field Spectroscopy ◽  
Thin Organic Films

scholarly journals Quantitative determination of the charge carrier concentration of ion implanted silicon by IR-near-field spectroscopy

2010 ◽  
Vol 18 (25) ◽  
pp. 26206 ◽  
Author(s):  
Rainer Jacob ◽  
Stephan Winnerl ◽  
Harald Schneider ◽  
Manfred Helm ◽  
Marc Tobias Wenzel ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Quantitative Determination ◽  
Carrier Concentration ◽  
Near Field ◽  
Charge Carrier Concentration ◽  
Field Spectroscopy ◽  
Ion Implanted

scholarly journals Laser heating of scanning probe tips for thermal near-field spectroscopy and imaging

APL Photonics ◽  
2017 ◽  
Vol 2 (2) ◽  
pp. 021301 ◽  
Author(s):  
Brian T. O’Callahan ◽  
Markus B. Raschke
Keyword(s):  
Laser Heating ◽  
Near Field ◽  
Scanning Probe ◽  
Field Spectroscopy

scholarly journals Metal–dielectric hybrid nanoantennas for efficient frequency conversion at the anapole mode

2018 ◽  
Vol 9 ◽  
pp. 2306-2314 ◽  
Author(s):  
Valerio F Gili ◽  
Lavinia Ghirardini ◽  
Davide Rocco ◽  
Giuseppe Marino ◽  
Ivan Favero ◽  
...  
Keyword(s):  
Frequency Conversion ◽  
Near Infrared ◽  
Strong Field ◽  
Second Harmonic ◽  
Near Field ◽  
Field Enhancement ◽  
High Refractive Index ◽  
Plasmonic Nanostructures ◽  
Ohmic Losses ◽  
Order Of Magnitude

Background: Dielectric nanoantennas have recently emerged as an alternative solution to plasmonics for nonlinear light manipulation at the nanoscale, thanks to the magnetic and electric resonances, the strong nonlinearities, and the low ohmic losses characterizing high refractive-index materials in the visible/near-infrared (NIR) region of the spectrum. In this frame, AlGaAs nanoantennas demonstrated to be extremely efficient sources of second harmonic radiation. In particular, the nonlinear polarization of an optical system pumped at the anapole mode can be potentially boosted, due to both the strong dip in the scattering spectrum and the near-field enhancement, which are characteristic of this mode. Plasmonic nanostructures, on the other hand, remain the most promising solution to achieve strong local field confinement, especially in the NIR, where metals such as gold display relatively low losses. Results: We present a nonlinear hybrid antenna based on an AlGaAs nanopillar surrounded by a gold ring, which merges in a single platform the strong field confinement typically produced by plasmonic antennas with the high nonlinearity and low loss characteristics of dielectric nanoantennas. This platform allows enhancing the coupling of light to the nanopillar at coincidence with the anapole mode, hence boosting both second- and third-harmonic generation conversion efficiencies. More than one order of magnitude enhancement factors are measured for both processes with respect to the isolated structure. Conclusion: The present results reveal the possibility to achieve tuneable metamixers and higher resolution in nonlinear sensing and spectroscopy, by means of improved both pump coupling and emission efficiency due to the excitation of the anapole mode enhanced by the plasmonic nanoantenna.

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