scholarly journals Influence of the Exciton Dark State on the Optical and Quantum Optical Properties of Single Quantum Dots

2010 ◽  
Author(s):  
M. Reischle ◽  
G. J. Beirne ◽  
R. Roßbach ◽  
M. Jetter ◽  
P. Michler ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Single Quantum ◽  
Dark State ◽  
Single Quantum Dots ◽  
Quantum Optical

scholarly journals Coupling single quantum dots to plasmonic nanocones: optical properties

2015 ◽  
Vol 184 ◽  
pp. 321-337 ◽  
Author(s):  
Alfred J. Meixner ◽  
Regina Jäger ◽  
Sebastian Jäger ◽  
Annika Bräuer ◽  
Kerstin Scherzinger ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Coupled Systems ◽  
Luminescence Spectra ◽  
Single Quantum ◽  
Ongoing Research ◽  
Excitation Rate ◽  
Radiative Processes ◽  
Wide Range ◽  
Single Quantum Dots

Coupling a single quantum emitter, such as a fluorescent molecule or a quantum dot (QD), to a plasmonic nanostructure is an important issue in nano-optics and nano-spectroscopy, relevant for a wide range of applications, including tip-enhanced near-field optical microscopy, plasmon enhanced molecular sensing and spectroscopy, and nanophotonic amplifiers or nanolasers, to mention only a few. While the field enhancement of a sharp nanoantenna increasing the excitation rate of a very closely positioned single molecule or QD has been well investigated, the detailed physical mechanisms involved in the emission of a photon from such a system are, by far, less investigated. In one of our ongoing research projects, we try to address these issues by constructing and spectroscopically analysing geometrically simple hybrid heterostructures consisting of sharp gold cones with single quantum dots attached to the very tip apex. An important goal of this work is to tune the longitudinal plasmon resonance by adjusting the cones' geometry to the emission maximum of the core–shell CdSe/ZnS QDs at nominally 650 nm. Luminescence spectra of the bare cones, pure QDs and hybrid systems were distinguished successfully. In the next steps we will further investigate, experimentally and theoretically, the optical properties of the coupled systems in more detail, such as the fluorescence spectra, blinking statistics, and the current results on the fluorescence lifetimes, and compare them with uncoupled QDs to obtain a clearer picture of the radiative and non-radiative processes.

scholarly journals Planarized spatially-regular arrays of spectrally uniform single quantum dots as on-chip single photon sources for quantum optical circuits

APL Photonics ◽  
2020 ◽  
Vol 5 (11) ◽  
pp. 116106
Author(s):  
Jiefei Zhang ◽  
Qi Huang ◽  
Lucas Jordao ◽  
Swarnabha Chattaraj ◽  
Siyuan Lu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Single Photon ◽  
Single Quantum ◽  
Single Quantum Dots ◽  
Photon Sources ◽  
On Chip ◽  
Quantum Optical ◽  
Optical Circuits ◽  
Regular Arrays

scholarly journals Effect of growth conditions on optical properties of CdSe/ZnSe single quantum dots

2003 ◽  
Vol 17 ◽  
pp. 97-98 ◽  
Author(s):  
T. Makino ◽  
R. André ◽  
J.-M. Gérard ◽  
R. Romestain ◽  
Le Si Dang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Growth Conditions ◽  
Single Quantum ◽  
Single Quantum Dots
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