Nicolaus Copernicus University Institute of Physics Nicolaus Copernicus University Toruń, Poland Searching for transient variations of the fine-structure constant with optical atomic clocks Piotr Wcisło Warszawa, 2017-05-18
Transient variation in
Transient variation in
Optical atomic clock
Optical atomic clock P. Morzynski, PhD thesis
Ultra-stable lasers femtosecond laser comb: Optical atomic clock Ultra-stable lasers femtosecond laser comb: Ultra-stable lasers: P. Morzynski, PhD thesis
Optical atomic clock Femtosecond laser comb: P. Morzynski, PhD thesis
Optical atomic clock Ultra-cold atoms: P. Morzynski, PhD thesis
Optical atomic clock
Transient variation of fundamental constants Two frequency references Different sensitivities Different positions
A single optical atomic clock is sensitive to α variations! Different sensitivities A single optical atomic clock is sensitive to α variations!
How about relativistic corrections? .06 Sr 1.8 Hg
A single optical atomic clock is sensitive to α variations! Different sensitivities A single optical atomic clock is sensitive to α variations!
A single optical atomic clock is sensitive to α variations!
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Two optical atomic clocks with neutral 88Sr atoms trapped in optical lattices
We do not need long-term stability ! Two optical atomic clocks with neutral 88Sr atoms trapped in optical lattices We do not need long-term stability !
Two optical atomic clocks with neutral 88Sr atoms trapped in optical lattices Assumptions: one event per 45 700 s d = 10 000 km
Standard internet connection (1 ms)
Standard internet connection (1 ms) the optical fiber link is not required two independent channels
Standard internet connection (1 ms) the optical fiber link is not required two independent channels
Next steps… Distant clocks - Global observatory Clock’s response to short events
Thank You for Your attention ! Institute of Physics Nicolaus Copernicus University Toruń, Poland Thank You for Your attention ! We thank Victor Flambaum and Yevgeny Stadnik for their crucial remarks 32