Sensing gravity by holding atoms for 20 seconds
Publikation: Bidrag til bog/antologi/rapport › Konferencebidrag i proceedings › Forskning › fagfællebedømt
Standard
Sensing gravity by holding atoms for 20 seconds. / Xu, Victoria; Jaffe, Matt; Panda, Cristian D.; Kristensen, Sofus L.; Clark, Logan W.; Müller, Holger.
Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology II. red. / Selim M. Shahriar; Jacob Scheuer. San Francisco, California, USA : SPIE - International Society for Optical Engineering, 2020. 112961R (Proceedings of SPIE - The International Society for Optical Engineering, Bind 11296).Publikation: Bidrag til bog/antologi/rapport › Konferencebidrag i proceedings › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - GEN
T1 - Sensing gravity by holding atoms for 20 seconds
AU - Xu, Victoria
AU - Jaffe, Matt
AU - Panda, Cristian D.
AU - Kristensen, Sofus L.
AU - Clark, Logan W.
AU - Müller, Holger
N1 - Publisher Copyright: © 2020 SPIE.
PY - 2020
Y1 - 2020
N2 - Atom interferometry has proven both a powerful means for probing fundamental physics, and a promising technology for high-precision inertial sensing. However, their performance has been limited by the available interrogation time of atoms falling freely in Earth's gravitational field. Trapped geometries have thus been explored as a means to improve the sensitivity of atom interferometers, but attempts to date have suffered from decoherence caused by trap inhomogeneities. We have demonstrated a trapped atom interferometer with an unprecedented interrogation time of 20 seconds,1 achieved by trapping the interferometer in the resonant mode of an optical cavity. The cavity is instrumental to this advance, as it provides spatial mode filtering for the trapping potential. Because the interferometer is held with the arms vertically separated along the gravitational axis, a phase shift accumulates due to the gravitational potential energy difference between the arms. Moreover, this phase accumulates continuously during the hold time, providing an orders-of-magnitude greater immunity to vibrations than previous atom-interferometric gravimeters at the same sensitivity.
AB - Atom interferometry has proven both a powerful means for probing fundamental physics, and a promising technology for high-precision inertial sensing. However, their performance has been limited by the available interrogation time of atoms falling freely in Earth's gravitational field. Trapped geometries have thus been explored as a means to improve the sensitivity of atom interferometers, but attempts to date have suffered from decoherence caused by trap inhomogeneities. We have demonstrated a trapped atom interferometer with an unprecedented interrogation time of 20 seconds,1 achieved by trapping the interferometer in the resonant mode of an optical cavity. The cavity is instrumental to this advance, as it provides spatial mode filtering for the trapping potential. Because the interferometer is held with the arms vertically separated along the gravitational axis, a phase shift accumulates due to the gravitational potential energy difference between the arms. Moreover, this phase accumulates continuously during the hold time, providing an orders-of-magnitude greater immunity to vibrations than previous atom-interferometric gravimeters at the same sensitivity.
KW - Atom interferometry
KW - Atomic physics
KW - metrology
KW - optical cavities
KW - optical lattices
KW - quantum sensors
UR - http://www.scopus.com/inward/record.url?scp=85083038141&partnerID=8YFLogxK
U2 - 10.1117/12.2552611
DO - 10.1117/12.2552611
M3 - Article in proceedings
AN - SCOPUS:85083038141
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology II
A2 - Shahriar, Selim M.
A2 - Scheuer, Jacob
PB - SPIE - International Society for Optical Engineering
CY - San Francisco, California, USA
T2 - Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology II 2020
Y2 - 1 February 2020 through 6 February 2020
ER -
ID: 271554648