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Stolarczyk N, Kowzan G, Thibault F, Cybulski H, Słowiński M, Tan Y, Wang J, Liu AW, Hu SM, Wcisło P. High-precision cavity-enhanced spectroscopy for studying the H 2-Ar collisions and interactions. J Chem Phys 2023; 158:094303. [PMID: 36889957 DOI: 10.1063/5.0139229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023] Open
Abstract
Information about molecular collisions is encoded in the shapes of collision-perturbed molecular resonances. This connection between molecular interactions and line shapes is most clearly seen in simple systems, such as the molecular hydrogen perturbed by a noble gas atom. We study the H2-Ar system by means of highly accurate absorption spectroscopy and ab initio calculations. On the one hand, we use the cavity-ring-down-spectroscopy technique to record the shapes of the S(1) 3-0 line of molecular hydrogen perturbed by argon. On the other hand, we simulate the shapes of this line using ab initio quantum-scattering calculations performed on our accurate H2-Ar potential energy surface (PES). In order to validate the PES and the methodology of quantum-scattering calculations separately from the model of velocity-changing collisions, we measured the spectra in experimental conditions in which the influence of the latter is relatively minor. In these conditions, our theoretical collision-perturbed line shapes reproduce the raw experimental spectra at the percent level. However, the collisional shift, δ0, differs from the experimental value by 20%. Compared to other line-shape parameters, collisional shift displays much higher sensitivity to various technical aspects of the computational methodology. We identify the contributors to this large error and find the inaccuracies of the PES to be the dominant factor. With regard to the quantum scattering methodology, we demonstrate that treating the centrifugal distortion in a simple, approximate manner is sufficient to obtain the percent-level accuracy of collisional spectra.
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Affiliation(s)
- N Stolarczyk
- Faculty of Physics, Institute of Physics, Astronomy and Informatics, Nicolaus Copernicus University in ToruńGrudziądzka 587-100Toruń, Poland
| | - G Kowzan
- Faculty of Physics, Institute of Physics, Astronomy and Informatics, Nicolaus Copernicus University in ToruńGrudziądzka 587-100Toruń, Poland
| | - F Thibault
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, F-35000 Rennes, France
| | - H Cybulski
- Faculty of Physics, Kazimierz Wielki University, al. Powstańców Wielkopolskich 2, 85-090 Bydgoszcz, Poland
| | - M Słowiński
- Faculty of Physics, Institute of Physics, Astronomy and Informatics, Nicolaus Copernicus University in ToruńGrudziądzka 587-100Toruń, Poland
| | - Y Tan
- Hefei National Laboratory for Physical Sciences at Microscale, iChem Center, University of Science and Technology of China, Hefei 230026, China
| | - J Wang
- Hefei National Laboratory for Physical Sciences at Microscale, iChem Center, University of Science and Technology of China, Hefei 230026, China
| | - A-W Liu
- Hefei National Laboratory for Physical Sciences at Microscale, iChem Center, University of Science and Technology of China, Hefei 230026, China
| | - S-M Hu
- Hefei National Laboratory for Physical Sciences at Microscale, iChem Center, University of Science and Technology of China, Hefei 230026, China
| | - P Wcisło
- Faculty of Physics, Institute of Physics, Astronomy and Informatics, Nicolaus Copernicus University in ToruńGrudziądzka 587-100Toruń, Poland
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Wcisło P, Ablewski P, Beloy K, Bilicki S, Bober M, Brown R, Fasano R, Ciuryło R, Hachisu H, Ido T, Lodewyck J, Ludlow A, McGrew W, Morzyński P, Nicolodi D, Schioppo M, Sekido M, Le Targat R, Wolf P, Zhang X, Zjawin B, Zawada M. New bounds on dark matter coupling from a global network of optical atomic clocks. Sci Adv 2018; 4:eaau4869. [PMID: 30539146 PMCID: PMC6286165 DOI: 10.1126/sciadv.aau4869] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 11/07/2018] [Indexed: 06/09/2023]
Abstract
We report on the first Earth-scale quantum sensor network based on optical atomic clocks aimed at dark matter (DM) detection. Exploiting differences in the susceptibilities to the fine-structure constant of essential parts of an optical atomic clock, i.e., the cold atoms and the optical reference cavity, we can perform sensitive searches for DM signatures without the need for real-time comparisons of the clocks. We report a two orders of magnitude improvement in constraints on transient variations of the fine-structure constant, which considerably improves the detection limit for the standard model (SM)-DM coupling. We use Yb and Sr optical atomic clocks at four laboratories on three continents to search for both topological defect and massive scalar field candidates. No signal consistent with a DM coupling is identified, leading to considerably improved constraints on the DM-SM couplings.
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Affiliation(s)
- P. Wcisło
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5, PL-87-100 Toruń, Poland
- JILA, National Institute of Standards and Technology and the University of Colorado, Department of Physics, University of Colorado, Boulder, CO 80309–0440, USA
| | - P. Ablewski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5, PL-87-100 Toruń, Poland
| | - K. Beloy
- National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305–3337, USA
| | - S. Bilicki
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5, PL-87-100 Toruń, Poland
- LNE-SYRTE, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, 61 avenue de l’Observatoire 75014 Paris, France
| | - M. Bober
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5, PL-87-100 Toruń, Poland
| | - R. Brown
- National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305–3337, USA
| | - R. Fasano
- National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305–3337, USA
- Department of Physics, University of Colorado, Boulder, CO 80309–0440, USA
| | - R. Ciuryło
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5, PL-87-100 Toruń, Poland
| | - H. Hachisu
- National Institute of Information and Communications Technology, 4-2-1 Nukuikitamachi, Koganei, 184-8795 Tokyo, Japan
| | - T. Ido
- National Institute of Information and Communications Technology, 4-2-1 Nukuikitamachi, Koganei, 184-8795 Tokyo, Japan
| | - J. Lodewyck
- LNE-SYRTE, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, 61 avenue de l’Observatoire 75014 Paris, France
| | - A. Ludlow
- National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305–3337, USA
- Department of Physics, University of Colorado, Boulder, CO 80309–0440, USA
| | - W. McGrew
- National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305–3337, USA
- Department of Physics, University of Colorado, Boulder, CO 80309–0440, USA
| | - P. Morzyński
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5, PL-87-100 Toruń, Poland
- National Institute of Information and Communications Technology, 4-2-1 Nukuikitamachi, Koganei, 184-8795 Tokyo, Japan
| | - D. Nicolodi
- National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305–3337, USA
| | - M. Schioppo
- National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305–3337, USA
- National Physical Laboratory (NPL), Teddington TW11 0LW, UK
| | - M. Sekido
- National Institute of Information and Communications Technology, 4-2-1 Nukuikitamachi, Koganei, 184-8795 Tokyo, Japan
| | - R. Le Targat
- LNE-SYRTE, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, 61 avenue de l’Observatoire 75014 Paris, France
| | - P. Wolf
- LNE-SYRTE, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, 61 avenue de l’Observatoire 75014 Paris, France
| | - X. Zhang
- National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305–3337, USA
| | - B. Zjawin
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5, PL-87-100 Toruń, Poland
| | - M. Zawada
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5, PL-87-100 Toruń, Poland
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Trivikram TM, Niu ML, Wcisło P, Ubachs W, Salumbides EJ. Precision measurements and test of molecular theory in highly excited vibrational states of H 2 ( v = 11). Appl Phys B 2016; 122:294. [PMID: 32336882 PMCID: PMC7154793 DOI: 10.1007/s00340-016-6570-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 11/04/2016] [Indexed: 06/08/2023]
Abstract
Accurate E F 1 Σ g + - X 1 Σ g + transition energies in molecular hydrogen were determined for transitions originating from levels with highly excited vibrational quantum number, v = 11, in the ground electronic state. Doppler-free two-photon spectroscopy was applied on vibrationally excited H 2 ∗ , produced via the photodissociation of H2S, yielding transition frequencies with accuracies of 45 MHz or 0.0015 cm-1. An important improvement is the enhanced detection efficiency by resonant excitation to autoionizing 7 p π electronic Rydberg states, resulting in narrow transitions due to reduced ac-Stark effects. Using known EF level energies, the level energies of X(v = 11, J = 1, 3-5) states are derived with accuracies of typically 0.002 cm-1. These experimental values are in excellent agreement with and are more accurate than the results obtained from the most advanced ab initio molecular theory calculations including relativistic and QED contributions.
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Affiliation(s)
- T. Madhu Trivikram
- Department of Physics and Astronomy, LaserLaB, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - M. L. Niu
- Department of Physics and Astronomy, LaserLaB, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - P. Wcisło
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5, 87-100 Toruń, Poland
| | - W. Ubachs
- Department of Physics and Astronomy, LaserLaB, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - E. J. Salumbides
- Department of Physics and Astronomy, LaserLaB, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
- Department of Physics, University of San Carlos, 6000 Cebu City, Philippines
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