نتایج جستجو برای: rabi

تعداد نتایج: 2490  

2009
S. Blatt J. W. Thomsen G. K. Campbell A. D. Ludlow M. D. Swallows M. J. Martin M. M. Boyd

We investigate the influence of atomic motion on precision Rabi spectroscopy of ultracold fermionic atoms confined in a deep one-dimensional optical lattice. We analyze the spectral components of longitudinal sideband spectra and present a model to extract information about the transverse motion and sample temperature from their structure. Rabi spectroscopy of the clock transition itself is als...

Journal: :journal of plant physiology & breeding 2014
esmaeil nezami g. ali garoosi raheem haddad ramin hosseini

abstract in vitro leaf explants of gf677 hybrid rootstock and rabi cultivar were placed on mql medium supplemented with bap at 0, 1, 2, 3 and 4 mg/l and naa at 0, 0.15 and 0.3 mg/l concentrations. the results revealed that bap, naa, genotype and their interactions had significant effect on both percentage and mean number of the regenerated shoots. for gf677, the highest percentage of shoot rege...

Journal: :international journal of agricultural management and development 2013
shahram saeedian mahmoud sabouhi sabouni javad shahraki ebrahim moradi mohammad sepahi

this paper uses the concept of meta-frontier to investigate the relationship between meta technology ratios (mtr) and different varieties in datepalms including; mazafati, rabi and zardan that are produced widely in sistan and baluchestan province of iran. we used a stratified sampling of 300 date farmers of this province in 2010, 2011 and 2012 and estimated a stochastic production frontier usi...

2004
L Besombes J J Baumberg J Motohisa

Measurements of optical Rabi oscillations in the excited states of individual InGaAs are presented. Under pulsed resonant excitation we observe Rabi oscillations with increasing pulse area, which are damped after the first maximum and minimum. We show that the observed damping comes from an additional non-resonant generation of carriers in the quantum dot. The observation of Rabi oscillations p...

Journal: :Physical review letters 2010
A J Ramsay T M Godden S J Boyle E M Gauger A Nazir B W Lovett A M Fox M S Skolnick

We study optically driven Rabi rotations of a quantum dot exciton transition between 5 and 50 K, and for pulse areas of up to 14π. In a high driving field regime, the decay of the Rabi rotations is nonmonotonic, and the period decreases with pulse area and increases with temperature. By comparing the experiments to a weak-coupling model of the exciton-phonon interaction, we demonstrate that the...

2003
D. Bonacci

Controlled manipulation of the quantum systems is becoming an important technological tool. Rabi oscillations are one of the simplest, yet quite useful mechanisms for achieving such manipulation. However, the validity of simple Rabi theory is limited and its upgrades are usually both technically involved as well as limited to simple two-level systems. The aim of the paper is to demonstrate a si...

Journal: :Physical review letters 2009
Ryan Compton Alex Filin Dmitri A Romanov Robert J Levis

Coherent broadband radiation in the form of Rabi sidebands is observed when a ps probe laser propagates through a weakly ionized, electronically excited microplasma generated in the focus of an intense pump beam. The sidebands arise from the interaction of the probe beam with pairs of excited states of a constituent neutral atom via the probe-induced Rabi oscillation. Sideband shifting of >90 m...

1999
Jianshu Cao

An adiabatic picture is proposed to analyze short-time electronic coherence and dephasing in mixed-valence systems, which cannot be described by the Redfield equation or the golden-rule rate theory. In this picture, electronic coherence arises from Rabi oscillations between two adiabatic surfaces and decays as a result of inhomogeneous distributions and thermal fluctuations of Rabi frequencies....

2016
Igor Yu. Chestnov Sevak S. Demirchyan Alexander P. Alodjants Yuri G. Rubo Alexey V. Kavokin

We propose a physical mechanism which enables permanent Rabi oscillations in driven-dissipative condensates of exciton-polaritons in semiconductor microcavities subjected to external magnetic fields. The method is based on stimulated scattering of excitons from the incoherent reservoir. We demonstrate that permanent non-decaying oscillations may appear due to the parity-time symmetry of the cou...

2003
D. Bonacci

State selective preparation and manipulation of discrete-level quantum systems such as atoms, molecules or quantum dots is a the ultimate tool for many diverse fields such as laser control of chemical reactions, atom optics, high-precision metrology and quantum computing [1]. Rabi oscillations [2] are one of the simplest, yet potentially quite useful mechanisms for achieving such manipulation. ...

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