---
_id: '10631'
abstract:
- lang: eng
  text: We combine experimental and theoretical approaches to explore excited rotational
    states of molecules embedded in helium nanodroplets using CS2 and I2 as examples.
    Laser-induced nonadiabatic molecular alignment is employed to measure spectral
    lines for rotational states extending beyond those initially populated at the
    0.37 K droplet temperature. We construct a simple quantum-mechanical model, based
    on a linear rotor coupled to a single-mode bosonic bath, to determine the rotational
    energy structure in its entirety. The calculated and measured spectral lines are
    in good agreement. We show that the effect of the surrounding superfluid on molecular
    rotation can be rationalized by a single quantity, the angular momentum, transferred
    from the molecule to the droplet.
acknowledgement: I.C. acknowledges the support by the European Union’s Horizon 2020
  research and innovation programme under the Marie Sklodowska-Curie Grant Agreement
  No. 665385. G.B. acknowledges support from the Austrian Science Fund (FWF), under
  project No. M2461-N27. M.L. acknowledges support by the Austrian Science Fund (FWF),
  under project No. P29902-N27, and by the European Research Council (ERC) Starting
  Grant No. 801770 (ANGULON). H.S acknowledges support from the European Research
  Council-AdG (Project No. 320459, DropletControl) and from The Villum Foundation
  through a Villum Investigator grant no. 25886.
article_number: L061303
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Igor
  full_name: Cherepanov, Igor
  id: 339C7E5A-F248-11E8-B48F-1D18A9856A87
  last_name: Cherepanov
- first_name: Giacomo
  full_name: Bighin, Giacomo
  id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
  last_name: Bighin
  orcid: 0000-0001-8823-9777
- first_name: Constant A.
  full_name: Schouder, Constant A.
  last_name: Schouder
- first_name: Adam S.
  full_name: Chatterley, Adam S.
  last_name: Chatterley
- first_name: Simon H.
  full_name: Albrechtsen, Simon H.
  last_name: Albrechtsen
- first_name: Alberto Viñas
  full_name: Muñoz, Alberto Viñas
  last_name: Muñoz
- first_name: Lars
  full_name: Christiansen, Lars
  last_name: Christiansen
- first_name: Henrik
  full_name: Stapelfeldt, Henrik
  last_name: Stapelfeldt
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
citation:
  ama: Cherepanov I, Bighin G, Schouder CA, et al. Excited rotational states of molecules
    in a superfluid. <i>Physical Review A</i>. 2021;104(6). doi:<a href="https://doi.org/10.1103/PhysRevA.104.L061303">10.1103/PhysRevA.104.L061303</a>
  apa: Cherepanov, I., Bighin, G., Schouder, C. A., Chatterley, A. S., Albrechtsen,
    S. H., Muñoz, A. V., … Lemeshko, M. (2021). Excited rotational states of molecules
    in a superfluid. <i>Physical Review A</i>. American Physical Society. <a href="https://doi.org/10.1103/PhysRevA.104.L061303">https://doi.org/10.1103/PhysRevA.104.L061303</a>
  chicago: Cherepanov, Igor, Giacomo Bighin, Constant A. Schouder, Adam S. Chatterley,
    Simon H. Albrechtsen, Alberto Viñas Muñoz, Lars Christiansen, Henrik Stapelfeldt,
    and Mikhail Lemeshko. “Excited Rotational States of Molecules in a Superfluid.”
    <i>Physical Review A</i>. American Physical Society, 2021. <a href="https://doi.org/10.1103/PhysRevA.104.L061303">https://doi.org/10.1103/PhysRevA.104.L061303</a>.
  ieee: I. Cherepanov <i>et al.</i>, “Excited rotational states of molecules in a
    superfluid,” <i>Physical Review A</i>, vol. 104, no. 6. American Physical Society,
    2021.
  ista: Cherepanov I, Bighin G, Schouder CA, Chatterley AS, Albrechtsen SH, Muñoz
    AV, Christiansen L, Stapelfeldt H, Lemeshko M. 2021. Excited rotational states
    of molecules in a superfluid. Physical Review A. 104(6), L061303.
  mla: Cherepanov, Igor, et al. “Excited Rotational States of Molecules in a Superfluid.”
    <i>Physical Review A</i>, vol. 104, no. 6, L061303, American Physical Society,
    2021, doi:<a href="https://doi.org/10.1103/PhysRevA.104.L061303">10.1103/PhysRevA.104.L061303</a>.
  short: I. Cherepanov, G. Bighin, C.A. Schouder, A.S. Chatterley, S.H. Albrechtsen,
    A.V. Muñoz, L. Christiansen, H. Stapelfeldt, M. Lemeshko, Physical Review A 104
    (2021).
corr_author: '1'
date_created: 2022-01-16T23:01:29Z
date_published: 2021-12-30T00:00:00Z
date_updated: 2025-03-31T16:00:55Z
day: '30'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.104.L061303
ec_funded: 1
external_id:
  arxiv:
  - '2107.00468'
  isi:
  - '000739618300001'
intvolume: '       104'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://128.84.4.18/abs/2107.00468
month: '12'
oa: 1
oa_version: Preprint
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P29902
  name: Quantum rotations in the presence of a many-body environment
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '801770'
  name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
- _id: 26986C82-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: M02641
  name: A path-integral approach to composite impurities
publication: Physical Review A
publication_identifier:
  eissn:
  - 2469-9934
  issn:
  - 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Excited rotational states of molecules in a superfluid
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 104
year: '2021'
...