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1

Szkolenie atomów

Chwedeńczuk Jan

Postępy Fizyki

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2023

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T. 74, z. 3

2--4

PL

Atomy, jak rekruci, by się sprawdzić na kwantowym polu bitwy, muszą przejść przysposobienie. Skoszarowane w pułapkach magnetycznych nabierają ogłady, zaś poddane mozolnemu szkoleniu, stają się najbardziej elitarną grupą w znanym Wszechświecie - nielokalnie splątanym oddziałem do zadań specjalnych.

EN

Atoms, like recruits, to prove themselves on the quantum battlefield, must get some drill. Enclosed in magnetic traps they get familiar with each other, while, subjected to strenuous training, they become the most elite group in the known Universe - a non-locally entangled squad for special tasks.

2

Precision spectroscopy of cold strontium atoms, towards optical atomic clock

Bober M., Zachorowski J., Gawlik W., Morzyński P., Zawada M., Lisak D., Cygan A., Bielska K., Piwiński M., Trawiński R., Ciuryło R., Ozimek F., Radzewicz C.

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2012

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Vol. 60, nr 4

707-710

EN

This report concerns the experiment of precision spectroscopy of cold strontium atoms in the Polish National Laboratory of Atomic, Molecular and Optical Physics in Toruń. The system is composed of a Zeeman slower and magneto-optical traps (at 461 nm and 689 nm), a frequency comb, and a narrow-band laser locked to an ultra-stable optical cavity. All parts of the experiment are prepared and the first measurements of the absolute frequency of the 1S0-3P1, 689 nm optical transition in 88Sr atoms are performed.

3

Towards optical atomic clock and metrology with cold strontium atoms

Bober M., Zachorowski J., Gawlik W., Smoluchowski M.

Elektronika : konstrukcje, technologie, zastosowania

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2011

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Vol. 52, nr 6

14-16

EN

The paper describes setting up an experiment for cooling and trapping of strontium atoms for applications in quantum measurements and metrology. The energy level structure of strontium atoms is discussed from this perspective. The details of the vacuum chamber and laser system dedicated for strontium optical clock are presented. Present status of the project together with its possible future applications are outlined.

PL

W artykule opisany został układ przygotowywany do chłodzenia i pułapkowania atomów strontu, które będą wykorzystywane w pomiarach kwantowych i metrologii. Z tej perspektywy omówiony został układ poziomów energetycznych strontu. Opisany został układ próżniowy i laserowy zoptymalizowany do budowy strontowego, optycznego zegara atomowego. Przedstawiony został obecny status. Zarysowanie zostały możliwe

4

Ionization spectroscopy in cold rubidium atoms

Krzemien L., Baster K., Brzozowski K., Wojciechowski A., Zachorowski J., Gawlik W.

Optica Applicata

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2010

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Vol. 40, nr 3

571--576

EN

We demonstrate photoionization spectroscopy in cold rubidium atoms trapped in a working magneto-optical trap. Three-photon ionization with two-photon resonance proceeds along various channels, with the step-by-step 5S–5P–5D transition and with the two-photon excitation of the 5D or 7S state. The processes are monitored by measuring ion signals which allow sensitive spectroscopy of weak transitions in a cold-atom sample.

5

Diagnostics and loading of an atomic optical dipole trap

Brzozowski K., Krzemien L., Zachorowski J., Gawlik W.

Optica Applicata

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2010

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Vol. 40, nr 3

557--563

EN

We describe diagnostic techniques used for optimization of loading of an optical dipole trap with CO2 laser and 87Rb atoms. Atoms, precooled in a magneto-optical trap, were loaded into the trap formed by a weakly focused CO2 laser beam with the waist of about 150 žm and power of 50 W. In addition to determining the atom number and temperature, the effect of the loading geometry on the time evolution of trapped atoms is discussed. It is shown that a direct study of this evolution can be used for determining the trap frequencies.

6

Magneto-optical Trap: Fundamentals and Realization

Kowalski K., Cao Long V., Dinh Xuan K., Głódź M., Nguyen Huy B., Szonert J.

Computational Methods in Science and Technology

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2010

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Vol. spec. iss. (2)

115-129

EN

Principles of laser cooling and trapping of atoms with regard to the magneto-optical trap (MOT) are described. Some details of the MOT and the accompanying measuring system, both constructed at the Institute of Physics, PAS in Warsaw, are given. Two examples of experimental results are shown.