نتایج جستجو برای: continuous beam

تعداد نتایج: 370670  

2004
Giacomo Mauro Paolo Perinotti

We show how Bell observables on a bipartite quantum system can be obtained by local observables via a controlled-unitary transformation. For continuous variables this result holds for the Bell observable corresponding to the non-conventional heterodyne measurement on two radiation modes, which is connected through a 50-50 beam-splitter to two local observables given by single-mode homodyne meas...

2004
J E Reiner L A Orozco

Doppler and transit broadening effects inherent in a thermal atomic beam reduce the size of quantum fluctuations in a cavity QED system. A cold continuous atomic beam would reduce these effects, but would not eliminate the different atom–field couplings associated with the random distribution of atoms throughout the cavity. We present results that describe the effect that this has on quantum fl...

Journal: :Applied optics 2007
Yunlin Chen S W Liu Dongdong Wang Tianlin Chen Min Xiao

Optical nonlinearities of periodically poled LiNbO(3) crystals were investigated by the single beam Z-scan technique with a continuous wave (cw) laser beam at 532 nm. The nonlinear optical absorption coefficient and refractive index change are determined to be 8.1 x 10(-6) cm/W and 2.6 x 10(-4) at 0.5 MW/cm(2) light intensity, respectively. Both sign and magnitude of the measured refractive non...

Journal: :CoRR 2017
Cong Duy Vu Hoang Gholamreza Haffari Trevor Cohn

We propose a novel decoding approach for neural machine translation (NMT) based on continuous optimisation. The resulting optimisation problem is then tackled using constrained gradient optimisation. Our powerful decoding framework, enables decoding intractable models such as the intersection of left-to-right and rightto-left (bidirectional) as well as sourceto-target and target-to-source (bili...

2012
S Ghosh B P Pal R K Varshney G P Agrawal

We investigate the influence of the phase front curvature of an input light beam on the transverse localization of light, choosing an evanescently coupled disordered one-dimensional semi-infinite waveguide lattice as an example. Our numerical study reveals that a finite phase front curvature of the input beam does indeed play an important role and it could degrade the quality of light localizat...

2013
C. Tschalär P. Evtushenko P. Fisher E. Ihloff N. Kalantarians A. Kelleher R. Legg R. G. Milner G. R. Neil L. Ou B. Schmookler C. Tennant S. Zhang

Tests were performed to pass a 100 MeV, 430 kWatt c.w. electron beam from the energy-recovery linac at the Jefferson Laboratory’s FEL facility through a set of small apertures in a 127 mm long aluminum block. Beam transmission losses of 3 p.p.m. through a 2 mm diameter aperture were maintained during a 7 hour continuous run.

Journal: :Physical review letters 2014
Kristin M Beck Wenlan Chen Qian Lin Michael Gullans Mikhail D Lukin Vladan Vuletić

Deterministic photon-photon interactions are a long-standing goal in optical science. Using an atomic ensemble inside a cavity, we demonstrate the mutual cross modulation of two continuous light beams at the level of individual photons. The originally uncorrelated beams derived from independent lasers become anticorrelated, as evidenced by an equal-time cross-correlation function g^{(2)}=0.89(1...

2003
İ. Aykut Erdem M. Erkut Erdem Volkan Atalay A. Enis Çetin

It is now possible to design real-time, low-cost computer vision systems even in personal computers due to the recent advances in electronics and computer industry. Due to this reason, it is feasible to develop computer vision based human-computer interaction systems. In this paper, a vision-based continuous Grafiti -like text entry system is presented. The user sketches characters in a Grafiti...

2004
J. M. Vogels T. Lahaye C. Roos Jean Dalibard D. Guery-Odelin

In this paper, we report our progress towards the realization of a continuous guided atomic beam in the degenerate regime. So far, we have coupled into a magnetic guide a flux of a few 10 atoms/s at 60 cm/s with a propagation in the guide over more than 2 meters. At this stage, the collision rate is not high enough to start an efficient forced evaporative cooling. Here we describe a new approac...

2011
D Parno

A wide range of nucleon and nuclear structure experiments in Jefferson Lab’s Hall A require precise, continuous measurements of the polarization of the electron beam. In our Compton polarimeter, electrons are scattered off photons in a Fabry-Perot cavity; by measuring an asymmetry in the integrated signal of the scattered photons detected in a GSO crystal, we can make non-invasive, continuous m...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید