Atomic processes and applications.

Walter E Thirring

Nikolay M. Sovetov, Anatoly V. Nikonov, D. A. Grigoriev +3 more

The problems of the atom beam formation and its application to the micro- and nanoelectronic manufacturing are considered. The method introducing a useful information into the structured atom beam and focusing this beam is described. This method named the atom projection is relevant to atom optics. Negative detuned laser radiation field controls the beam. Features of the cooling, structuring, information input, focusing processes are discussed. The scheme of the plant using the atom beam with adjustable density distribution. The atom beam cross-section and the processed area are shaped according to the desired profile. The scheme of the atom projector and the functions of its units are described. The spatial resolution of processing and the resolution of surface analysis are evaluated to be about 10 nm and 1 nm correspondingly. Presented process is maskless, in-situ, with high output rating. The atom projector can be applied for the manufacturing, analysis and in-line reconstruction of the IC as well as for basic researchers of matter. Authors consider the nanoelectronic chip manufacturing as the most perspective application for the atom projector.

Kai Zhang, Shengshuai Liu, Yingxuan Chen +2 more

The four-wave mixing process in atomic ensembles has many important applications in quantum information. We review recent progress on the generation of optical quantum states from the four-wave mixing process in hot atomic ensembles, including the production of two-beam, multi-beam, and multiplexed quantum correlated or entangled states. We also review the applications of these optical quantum states in implementing quantum information protocols, constructing SU(1,1) quantum interferometers, and realizing quantum plasmonic sensing. These applications indicate that the four-wave mixing process in hot atomic ensembles is a promising platform for quantum information processing, especially for implementing alloptical quantum information protocols, constructing SU(1,1) interferometers, and realizing quantum sensing.

Nelson Frederick Beeler, Franklyn Mansfield Branley

Rainer Dumke, T. Müther, F. Scharnberg +3 more

Application of microoptical elements to quantum information processing with atoms and discussion of the inherent advantages and the potential of the new approach are presented. As one example, applicability of arrays of microfabricated lenses to create multiple far-detuned dipole traps for storing and manipulating qubits inscribed into atoms are experimentally investigated.