Atomic photoionization by multiple temporal pairs of slits

Temporal dynamics of photon pairs generated by an atomic ensemble.

The time dependence of nonclassical correlations is investigated for two fields (1,2) generated by an ensemble of cold cesium atoms via the protocol of Duan et al. [Nature (London) 414, 413 (2001)]]. The correlation function R(t1,t2) for the ratio of cross to autocorrelations for the (1,2) fields at times (t1,t2) is found to have a maximum value R(max=292+/-57, which significantly violates the ...

Atomic photoionization experiment by harmonic-generation spectroscopy

Where does atomic photoionization begin?

We perform a time-delay analysis of of strong field ionization of atomic hydrogen in the tunnelling regime. We obtain the values of the time delay from the quantum-mechanical calculation involving solution of the time-dependent Schrödinger equation, and use these values as parameters defining corresponding classical trajectories. We demonstrate that almost all the classical trajectories, define...

Entanglement Change in Atomic Photoionization

Photoionization is one of the basic processes of light-matter interaction, which may be used to transfer at least part of quantum information from photons to electrons in the continuum in such a way that the final state electron carries composite information of the initial electron and of the incident photon. We examine how photoionization may change entanglement of electrons. Our result shows ...

Three-Dimensional Measurement Using Multiple Slits with a Random Dot Pattern - Multiple Slits and Camera Calibration -

Computer vision systems have been used to detect three-dimensional shape data of objects. Slit-laser sweeping or several pattern projections are generated during the recording process when using these systems. Generally, since the recording process requires time, it is necessary to temporarily stop the movement of both the measurement target and the measurement device during the recording proce...