搜索结果: 1-15 共查到“物理学 external”相关记录48条 . 查询时间(0.112 秒)
Practical and Fast Quantum Random Number Generation Based on Photon Arrival Time Relative to External Reference
Practical Fast Quantum Random Number Generation Photon Arrival Time Relative External Reference
2016/1/22
We present a practical high-speed quantum random number generator, where the timing of single-photon detection relative to an external time reference is measured as the raw data. The bias of the raw d...
Natural noise and external wake field seeding in a proton-driven plasma accelerator
Natural noise external wake field proton-driven plasma accelerator Plasma Physics
2012/4/25
Natural noise and external wake field seeding in a proton-driven plasma accelerator
Efficient method of designing optically-pumped vertical external cavity surface emitting lasers having equally excited quantum wells
Efficient method optically-pumped vertical external cavity surface emitting lasers equally excited quantum wells Optics
2012/4/20
Even distribution of carriers allows to maximize optical gain of the Optically-Pumped Vertical External Cavity Surface Emitting Laser. In this paper we show how to distribute the quantum wells and blo...
25 kHz narrow spectral bandwidth of a wavelength tunable diode laser with a short waveguide-based external cavity
25 kHz narrow spectral bandwidth wavelength tunable diode laser short waveguide-based external cavity Optics
2012/4/19
We report on the spectral properties of a diode laser with a tunable external cavity in integrated optics. Even though the external cavity is short compared to other small-bandwidth external cavity la...
Intense Internal and External Fluorescence as Solar Cells Approach the Shockley-Queisser Efficiency Limit
Shockley-Queisser Solar Cells
2011/8/31
Absorbed sunlight in a solar cell produces electrons and holes. But, at the open circuit condition, the carriers have no place to go. They build up in density and, ideally, they emit external fluoresc...
Holographic fermions in external magnetic fields
Holographic fermions external magnetic fields
2010/12/23
We study the Fermi level structure of 2+1-dimensional strongly interacting electron systems in external magnetic field using the AdS/CFT correspondence. The gravity dual of a finite density fermion s...
External field influence on semiflexible macromolecules: geometric coupling
External field semiflexible macromolecules
2010/12/24
We suggested a geometric approach to address the external field influence on the DNA molecules, described by the WLC model via geometric coupling. It consists in the introduction of the effective metr...
External field influence on semiflexible macromolecules: geometric coupling
External field influence semiflexible macromolecules: geometric
2010/11/17
We suggested a geometric approach to address the external field influence on the DNA molecules, described by the WLC model via geometric coupling. It consists in the introduction of the effective metr...
Dynamics of systems with isotropic competing interactions in an external field: a Langevin approach
Dynamics of systems isotropic competing interactions external field: a Langevin approach
2010/11/25
We study the Langevin dynamics of a ferromagnetic Ginzburg-Landau Hamiltonian with a competing longrange repulsive term in the presence of an external magnetic field. The model is analytically solved ...
The Work Done by an External Field
Kubo-Greenwood formula DC conductivity longitudinal field transverse field
2010/11/24
From the change in kinetic energy induced by an external field, we discuss the applicable conditions for the Mott-Davis and Moseley-Lukes form of the Kubo-Greenwood formula (KGF) for the electrical co...
External-cavity designs for phase-coupled laser diode arrays
External-cavity designs phase-coupled laser diode arrays
2010/11/16
We describe passive phase-locking architectures based on external-cavity setups to improve the brightness of diode laser bars. Volume Bragg gratings are used to stabilize the lase line. Numerical mode...
Observation of slow light in the noise spectrum of a vertical external cavity surface emitting laser
Observation slow light noise spectrum emitting laser
2010/11/11
The role of coherent population oscillations is evidenced in the noise spectrum of an ultra-low noise lasers. This effect is isolated in the intensity noise spectrum of an optimized single-frequency v...
The Dirac-Moshinsky oscillator coupled to an external field and its connection to quantum optics
Dirac-Moshinsky oscillator coupled external field connection to quantum optics
2010/11/8
The Dirac-Moshinsky oscillator is an elegant example of an exactly solvable quantum relativistic model that under certain circumstances can be mapped onto the Jaynes-Cummings model in quantum optics. ...
Van der Waals torque induced by external magnetic fields
torque induced external magnetic fields
2010/11/8
We present a method for inducing and controlling van der Waals torques between two parallel slabs using a constant magnetic field. The torque is calculated using the Barash theory of dispersive torque...
Directed excitation transfer in vibrating chains by external fields
Directed excitation transfer vibrating chains external fields
2010/11/5
We study the coherent dynamics of excitations on vibrating chains. By applying an external field and matching the field strength with the oscillation frequency of the chain it is possible to obtain an...