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Biselective pulses for large-area atom interferometry

Biselective pulses for large-area atom interferometry
Biselective pulses for large-area atom interferometry
We present designs for the augmentation “mirror” pulses of large-momentum-transfer atom interferometers that maintain their fidelity as the wave-packet momentum difference is increased. These biselective pulses, tailored using optimal control methods to the evolving bimodal momentum distribution, should allow greater interferometer areas and hence increased inertial measurement sensitivity, without requiring elevated Rabi frequencies or extended frequency chirps. Using an experimentally validated model, we have simulated the application of our pulse designs to large-momentum-transfer atom interferometry using stimulated Raman transitions in a laser-cooled atomic sample of 85Rb at 1 μK. After the wave packets have separated by 42 photon recoil momenta, our pulses maintain a fringe contrast of 90%, whereas, for adiabatic rapid passage and conventional π pulses, the contrast is less than 10%. Furthermore, we show how these pulses may be adapted to be robust to laser intensity variations between pulses and to suppress the detrimental off-resonant excitation that limits other broadband pulse schemes.
2469-9926
Saywell, Jack Cameron
da7a642a-ed67-4bd0-8959-e4c2874a8e67
Carey, Max
c2b2911d-e3a9-4537-b16e-9bbfd3b68c6c
Kuprov, Ilya
bb07f28a-5038-4524-8146-e3fc8344c065
Freegarde, Tim
01a5f53b-d406-44fb-a166-d8da9128ea7d
Saywell, Jack Cameron
da7a642a-ed67-4bd0-8959-e4c2874a8e67
Carey, Max
c2b2911d-e3a9-4537-b16e-9bbfd3b68c6c
Kuprov, Ilya
bb07f28a-5038-4524-8146-e3fc8344c065
Freegarde, Tim
01a5f53b-d406-44fb-a166-d8da9128ea7d

Saywell, Jack Cameron, Carey, Max, Kuprov, Ilya and Freegarde, Tim (2020) Biselective pulses for large-area atom interferometry. Physical Review A, 101 (6), [063625]. (doi:10.1103/PhysRevA.101.063625).

Record type: Article

Abstract

We present designs for the augmentation “mirror” pulses of large-momentum-transfer atom interferometers that maintain their fidelity as the wave-packet momentum difference is increased. These biselective pulses, tailored using optimal control methods to the evolving bimodal momentum distribution, should allow greater interferometer areas and hence increased inertial measurement sensitivity, without requiring elevated Rabi frequencies or extended frequency chirps. Using an experimentally validated model, we have simulated the application of our pulse designs to large-momentum-transfer atom interferometry using stimulated Raman transitions in a laser-cooled atomic sample of 85Rb at 1 μK. After the wave packets have separated by 42 photon recoil momenta, our pulses maintain a fringe contrast of 90%, whereas, for adiabatic rapid passage and conventional π pulses, the contrast is less than 10%. Furthermore, we show how these pulses may be adapted to be robust to laser intensity variations between pulses and to suppress the detrimental off-resonant excitation that limits other broadband pulse schemes.

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Biselective pulses for large-area atom interferometry - Accepted Manuscript
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Accepted/In Press date: 28 May 2020
Published date: 22 June 2020

Identifiers

Local EPrints ID: 441889
URI: http://eprints.soton.ac.uk/id/eprint/441889
ISSN: 2469-9926
PURE UUID: c516c5a8-09c1-4c7e-98da-50e3d36eceb6
ORCID for Ilya Kuprov: ORCID iD orcid.org/0000-0003-0430-2682
ORCID for Tim Freegarde: ORCID iD orcid.org/0000-0002-0680-1330

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Date deposited: 01 Jul 2020 16:31
Last modified: 15 Sep 2021 01:59

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