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Zalivako, I. V.

Publications and source records attributed to Zalivako, I. V..

4 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Compact ultrastable laser system for spectroscopy of {sup 2}S{sub 1/2} → {sup 2}D{sub 3/2} quadrupole transition in {sup 171}Yb{sup +} ion

We report the results of studying a compact laser system designed for manipulating a quantum state of the optical qubit based on the {sup 2}S{sub 1/2} → {sup 2}D{sub 3/2} quadrupole transition in the {sup 171}Yb{sup +} ion at a wavelength of 435.5 nm. An emission power of the laser system reaches 500 μW at λ = 435.5 nm and the relative frequency instability of at most 3 × 10{sup −15} is achieved at averaging intervals from 0.5 to 50 s with a subtracted linear frequency drift. The compactness of the developed system makes it possible to employ it in transportable systems including optical clocks. (laser spectroscopy)

71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSIC↗
DOE OSTI2017

Microwave frequency standard on {sup 25}Mg{sup +} ions: expected characteristics and prospects

A scheme of the new frequency standard is reported based on a microwave transition between hyperfine components of the ground state in {sup 25}Mg{sup +} ions. It is proposed to capture ions into a linear quadrupole Paul trap and to perform the laser cooling, as well as to prepare the particle ensemble and to implement detection by using a single laser system based on a semiconductor laser. Characteristics of the suggested frequency standard are estimated. (paper)

71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSIC↗
DOE OSTI2016

Multiparticle losses in a linear quadrupole Paul trap

A linear quadrupole Paul trap is fabricated for capturing magnesium and aluminium ions. An experimental cycle performed has demonstrated ion capture and holding in a trap with an average ion lifetime of 1.7 s. Modelling of ion dynamics in the trap shows that the main mechanism responsible for losses of hot ions is multiparticle interaction, which results in that a kinetic energy of some ions increases and they leave the trapping zone. This mechanism is completely suppressed if ions are cooled. Another mechanism is the charge exchange; however, it is not substantial at a high average energy of ions produced in the result of an electron impact. Parameters of the trap allow one to perform precision spectroscopic measurements and to control ion quantum states. (laser cooling)

71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSIC↗