Excitation Energy Dependence of Fluorescence Intermittency Nanocrystals in
... This phenomena is known as fluorescence intermittency, colloquially called blinking, and a great deal of research has gone into understanding it over the last decade. All known types of fluorophores exhibit blinking, but no physical picture has yet emerged that is completely consistent with the obse ...
... This phenomena is known as fluorescence intermittency, colloquially called blinking, and a great deal of research has gone into understanding it over the last decade. All known types of fluorophores exhibit blinking, but no physical picture has yet emerged that is completely consistent with the obse ...
Intersublevel optical transitions in InAs nanocrystals probed by photoinduced absorption spectroscopy:
... Optical transitions between the quantized sublevels of colloidally synthesized InAs nanocrystals have been revealed using infrared photoinduced absorption spectroscopy. Two different groups of intersublevel transitions were observed. Using a correlation between the measured transition energies and e ...
... Optical transitions between the quantized sublevels of colloidally synthesized InAs nanocrystals have been revealed using infrared photoinduced absorption spectroscopy. Two different groups of intersublevel transitions were observed. Using a correlation between the measured transition energies and e ...
A tunable two-impurity Kondo system in an atomic point contact
... in, the peak splits into two resonances at almost symmetric positions with respect to zero bias. The splitting increases with decreasing tip-sample distance (Fig. 3(b), (c)). We note that all data shown in this work is obtained from reversible, non-destructive measurements, where STM images taken be ...
... in, the peak splits into two resonances at almost symmetric positions with respect to zero bias. The splitting increases with decreasing tip-sample distance (Fig. 3(b), (c)). We note that all data shown in this work is obtained from reversible, non-destructive measurements, where STM images taken be ...
Spin-1=2 Optical Lattice Clock
... the fraction of excited atoms by applying a sequence of three pulses (5 ms each) resonant with the blue cooling transition at 399 nm and collecting the scattered fluorescence on a photomultiplier tube (PMT). Each PMT signal is integrated and then digitized by a microprocessor. The first pulse measur ...
... the fraction of excited atoms by applying a sequence of three pulses (5 ms each) resonant with the blue cooling transition at 399 nm and collecting the scattered fluorescence on a photomultiplier tube (PMT). Each PMT signal is integrated and then digitized by a microprocessor. The first pulse measur ...
Effective Quantum Spin Systems with Trapped Ions
... the distance between ions is not constant. We can, however, define an averaged lattice constant d0 , to understand the qualitative properties of the vibrational modes. We have two cases, depending on the orientation of the pushing forces: (a) Axial force. The equilibrium position of the ions are suc ...
... the distance between ions is not constant. We can, however, define an averaged lattice constant d0 , to understand the qualitative properties of the vibrational modes. We have two cases, depending on the orientation of the pushing forces: (a) Axial force. The equilibrium position of the ions are suc ...
Nitrogen-vacancy center
The nitrogen-vacancy center (N-V center) is one of numerous point defects in diamond. Its most explored and useful property is photoluminescence, which can be easily detected from an individual N-V center, especially those in the negative charge state (N-V−). Electron spins at N-V centers, localized at atomic scales, can be manipulated at room temperature by applying a magnetic field, electric field, microwave radiation or light, or a combination, resulting in sharp resonances in the intensity and wavelength of the photoluminescence. These resonances can be explained in terms of electron spin related phenomena such as quantum entanglement, spin-orbit interaction and Rabi oscillations, and analysed using advanced quantum optics theory. An individual N-V center can be viewed as a basic unit of a quantum computer, and it has potential applications in novel, more efficient fields of electronics and computational science including quantum cryptography and spintronics.