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.

Tip Enhanced Strong Coupling of a Single Emitter at Room Temperature

2019 ◽  
Author(s):  
Molly A. May ◽  
Kyoung-Duck Park ◽  
Haixu Leng ◽  
Jaron A. Kropp ◽  
Theodosia Gougousi ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Room Temperature ◽  
Single Emitter

scholarly journals Near-field strong coupling of single quantum dots

2018 ◽  
Vol 4 (3) ◽  
pp. eaar4906 ◽  
Author(s):  
Heiko Groß ◽  
Joachim M. Hamm ◽  
Tommaso Tufarelli ◽  
Ortwin Hess ◽  
Bert Hecht
Keyword(s):  
Quantum Dots ◽  
Strong Coupling ◽  
Near Field ◽  
Single Quantum ◽  
Single Quantum Dots

Near-field Probing of Plasmonic Nanostructures with a Single Quantum Dot

CLEO: 2013 ◽  
2013 ◽  
Author(s):  
C. Ropp ◽  
Z. Cummins ◽  
S. Nah ◽  
J. T. Fourkas ◽  
B. Shapiro ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Near Field ◽  
Plasmonic Nanostructures ◽  
Single Quantum ◽  
Single Quantum Dot

Room-Temperature Near-Field Reflection Spectroscopy of Single Quantum Wells

1997 ◽  
Vol 164 (1) ◽  
pp. 541-546 ◽  
Author(s):  
W. Langbein ◽  
J. M. Hvam ◽  
S. Madsen ◽  
M. Hetterich ◽  
C. Klingshirn
Keyword(s):  
Quantum Wells ◽  
Room Temperature ◽  
Near Field ◽  
Single Quantum ◽  
Reflection Spectroscopy

scholarly journals Strong coupling with directional absorption features of Ag@Au hollow nanoshell/J-aggregate heterostructures

Nanophotonics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1835-1845 ◽  
Author(s):  
Linchun Sun ◽  
Ze Li ◽  
Jingsuo He ◽  
Peijie Wang
Keyword(s):  
Strong Coupling ◽  
Surface Plasmon ◽  
Hybrid System ◽  
Room Temperature ◽  
Localized Surface Plasmon ◽  
Resonance Strength ◽  
Strong Light ◽  
Exciton Coupling ◽  
Nanophotonic Devices ◽  
Mode Volume

AbstractTunable plasmon-exciton coupling is demonstrated at room temperature in hybrid systems consisting of Ag@Au hollow nanoshells (HNSs) and J-aggregates. The strong coupling depends on the exciton binding energy and the localized surface plasmon resonance strength, which can be tuned by changing the thickness of the Ag@Au HNS. An evident anticrossing dispersion curve in the coupled energy diagram of the hybrid system was observed based on the absorption spectra obtained at room temperature. In this paper, strong coupling was observed twice (first at lower wavelength and then also at a higher wavelength) via a single preparation process of the Ag@Au HNS system. The first Rabi splitting energy (ħΩ) is 225 meV. Then, the extinction spectra of the bare Ag@Au HNS and the Ag@Au HNS-J-aggregate hybrid system were reproduced by numerical simulations using the finite-difference time domain method, which were in good agreement with the experimental observations. We attributed the strong coupling of the new shell hybrid system to the reduced local surface plasmon (LSP) mode volume of the Ag@Au HNS. This volume is about 1021.6 nm3. The features of the Ag@Au HNS nanostructure with a small LSP mode volume enabled strong light-matter interactions to be achieved in single open plasmonic nanocavities. These findings may pave the way toward nanophotonic devices operating at room temperature.

scholarly journals Fluorescence enhancement and strong-coupling in faceted plasmonic nanocavities

2018 ◽  
Vol 5 ◽  
pp. 6 ◽  
Author(s):  
Nuttawut Kongsuwan ◽  
Angela Demetriadou ◽  
Rohit Chikkaraddy ◽  
Jeremy J. Baumberg ◽  
Ortwin Hess
Keyword(s):  
Strong Coupling ◽  
Single Molecule ◽  
Coupling Strength ◽  
Room Temperature ◽  
Optical Cavity ◽  
Field Enhancement ◽  
Plasmonic Nanostructures ◽  
Quantum Emitter ◽  
Highly Sensitive ◽  
Shed Light

Emission properties of a quantum emitter can be significantly modified inside nanometre-sized gaps between two plasmonic nanostructures. This forms a nanoscopic optical cavity which allows single-molecule detection and single-molecule strong-coupling at room temperature. However, plasmonic resonances of a plasmonic nanocavity are highly sensitive to the exact gap morphology. In this article, we shed light on the effect of gap morphology on the plasmonic resonances of a faceted nanoparticle-on-mirror (NPoM) nanocavity and their interaction with quantum emitters. We find that with increasing facet width the NPoM nanocavity provides weaker field enhancement and thus less coupling strength to a single quantum emitter since the effective mode volume increases with the facet width. However, if multiple emitters are present, a faceted NPoM nanocavity is capable of accommodating a larger number of emitters, and hence the overall coupling strength is larger due to the collective and coherent energy exchange from all the emitters. Our findings pave the way to more efficient designs of nanocavities for room-temperature light-matter strong-coupling, thus providing a big step forward to a non-cryogenic platform for quantum technologies.

Near-field spectroscopy of single quantum dots at room temperature

2001 ◽  
Vol 202 (1) ◽  
pp. 209-211 ◽  
Author(s):  
K. Ikeda ◽  
K. Matsuda ◽  
H. Saito ◽  
K. Nishi ◽  
T. Saiki
Keyword(s):  
Quantum Dots ◽  
Room Temperature ◽  
Near Field ◽  
Single Quantum ◽  
Field Spectroscopy ◽  
Single Quantum Dots
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