[institut] Seminar Fizickog fakulteta - podsetnik

[Mirzeta Savic]

Sreda, 9. decembar u 11.15, Fizicki amfiteatar, 661

 

Wojciech Gawlik and Jerzy Zachorowski,

Photonic Department, Jagiellonian University,

 

Title: Polish Optical Atomic Clock and research on Nitrogen Vacancy color
centers in Krakow

 

Abstract: 

 

The talk will present two fields of activity of the Photonic Department of
the Jagiellonian University in Krakow: 

1) The construction of the strontium optical atomic clock.

                2) The experiments on Nitrogen Vacancy color centers in
diamond.

 

The time and frequency standards have the best accuracy of all the SI units.
Nevertheless, research on new standards of much higher accuracy and
stability are undertaken. They concentrate mostly on clocks using optical
transitions instead of microwave ones.

 

Nitrogen Vacancy color centers in diamond play a role of artificial atom,
enabling attractive applications.  In our experiments spin polarization of
NV centers is created by optical excitation and monitored by microwave
resonance (ESR technique) in the temperature range from 10 to 300 K.

 

The talk will present the construction details of the strontium optical
atomic clock built in Poland, recent results on absolute measurement of the
clock transition in bosonic Sr88 and the novel studies of the coherent
dynamics and relaxation processes in NVs with the methods of microwave
spectroscopy.

 

 

 

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