Introduction The ability to produce atoms and atomic ions in a single quantum state has revolutionized atomic physics [1] and the technologies it provides [2–5]. To produce this quantum matter, the temperature of the atoms and ions are lowered such that the Gibbs factor is appreciable for only the quantum ground state. The techniques for reaching these, socalled, ultracold temperatures, which a...

Analogous to the extension of laser cooling techniques from two-level to three-level atoms, Doppler cooling of molecules with an intermediate electronic state is considered. In particular, we use a rate-equation approach to simulate cooling of SiO+, in which population buildup in the intermediate state is prevented by its short lifetime. We determine that Doppler cooling of SiO+ can be accompli...

We experimentally confirm that diamond surface cooling can significantly enhance the output performance of a sub-nanosecond diode-end-pumped passively Q-switched Yb:YAG laser. It is found that the pulse energy obtained with diamond cooling is approximately 1.5 times greater than that obtained without diamond cooling, where a Cr(4+):YAG absorber with the initial transmission of 84% is employed. ...

Laser cooling is a fundamental technique used in primary atomic frequency standards, quantum computers, quantum condensed matter physics and tests of fundamental physics, among other areas. It has been known since the early 1990s that laser cooling can, in principle, be improved by using squeezed light as an electromagnetic reservoir; while quantum feedback control using a squeezed light probe ...

We study the mechanical effects of light on an atom trapped in a harmonic potential when an atomic dipole transition is driven by a laser and it is strongly coupled to a mode of an optical resonator. We investigate the cooling dynamics in the bad cavity limit, focussing on the case in which the effective transition linewidth is smaller than the trap frequency, hence when sideband cooling could ...

In this review we consider three important applications of lasers in high energy physics: γγ, γe colliders, laser cooling, positron production. These topics are actual now due to plans of construction linear ee, ee, γγ, γe colliders with energies 0.3–1 TeV. High energy photons for γγ, γe collisions can be obtained using laser backscattering. These types of collisions considerably increase physi...