1. 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,

2. Transient variation in

3. Transient variation in

4. Optical atomic clock

5. Optical atomic clock
P. Morzynski, PhD thesis

6. Ultra-stable lasers femtosecond laser comb:
Optical atomic clock
Ultra-stable lasers femtosecond laser comb:
Ultra-stable lasers:
P. Morzynski, PhD thesis

7. Optical atomic clock
Femtosecond
laser comb:
P. Morzynski, PhD thesis

8. Optical atomic clock
Ultra-cold atoms:
P. Morzynski, PhD thesis

9. Optical atomic clock

10. Transient variation of fundamental constants
Two frequency references
Different
sensitivities
Different
positions

11. A single optical atomic clock is sensitive to α variations!
Different
sensitivities
A single optical atomic clock is sensitive to α variations!

13. How about relativistic corrections?
.06 Sr
1.8 Hg

14. A single optical atomic clock is sensitive to α variations!
Different
sensitivities
A single optical atomic clock is sensitive to α variations!

15. A single optical atomic clock is sensitive to α variations!

17. A0

18. A0

19. A0

20. Two optical atomic clocks with neutral 88Sr atoms trapped in optical lattices

21. 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 !

22. Two optical atomic clocks with neutral 88Sr atoms trapped in optical lattices
Assumptions:
one event per s
d = km

28. Standard internet connection (1 ms)

29. Standard internet connection (1 ms)
the optical fiber link is not required
two independent channels

30. Standard internet connection (1 ms)
the optical fiber link is not required
two independent channels

31. Next steps… Distant clocks - Global observatory
Clock’s response to short events

32. 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