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Atom interferometry on narrow intercombination transitions of alkali-earth atoms

Event Details

Event Dates: 

Monday, July 31, 2017 - 4:00pm

Seminar Location: 

  • JILA X317

Speaker Name(s): 

Nicola Poli

Speaker Affiliation(s): 

University of Florence
Seminar Type/Subject

Scientific Seminar Type: 

  • JILA Public Seminar

Event Details & Abstract: 

A reception for Professor Poli will begin in the H Bar at 3:30pm.

Abstract

Today, matter-wave interferometers as clocks and gravimeters allow for precision measurements of time and gravity at unprecedented level. 

In all these sensors, indeed, the exquisite control of both internal (electronic) and external (center of mass motion) degrees of freedom of ultra-cold atomic samples, enable us to study interactions at their most basic, quantum level, paving the way for new tests of fundamental physics. 

In this talk, I'll review some of the most recent results obtained by our group in this field, presenting also a novel approach to atom interferometry, based on ultra-narrow intercombination transitions of strontium atoms (88Sr). Novel spin-squeezing techniques with direct application to strontium atom interferometers will also be discussed.

 

References

N. Poli, F.-Y. Wang, M. G. Tarallo, A. Alberti, M. Prevedelli, G. M. Tino "Precision measurement of gravity with cold atoms in an optical lattice and comparison with a classical gravimeter", Phys. Rev. Lett. 106, 038501 (2011)
M. G. Tarallo, T. Mazzoni, N. Poli, D. V. Sutyrin, X. Zhang, and G. M. Tino, "Test of Einstein Equivalence Principle for 0-spin and half-integer-spin atoms: Search for spin-gravity coupling effects", Phys. Rev. Lett. 113, 023005 (2014)
G. Rosi, F. Sorrentino, L. Cacciapuoti, M. Prevedelli and G. M. Tino, "Precision measurement of the Newtonian gravitational constant using cold atoms", Nature 510,518–521(2014)
T. Mazzoni, X. Zhang, R. Del Aguila, L. Salvi, N.Poli, and G. M. Tino "Large-momentum-transfer Bragg interferometer with strontium atoms", Phys. Rev. A 92, 053619 (2015)
X. Zhang, R. P. del Aguila, T. Mazzoni, N. Poli, and G. M. Tino, "Trapped-atom interferometer with ultracold Sr atoms", Phys. Rev. A 94, 043608 (2016)