1
|
Whalen JD, Ding R, Kanungo SK, Killian TC, Yoshida S, Burgdörfer J, Dunning FB. Formation of ultralong-range fermionic Rydberg molecules in 87Sr: role of quantum statistics. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1575485] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- J. D. Whalen
- Department of Physics and Astronomy, Rice University, Houston, TX, USA
| | - R. Ding
- Department of Physics and Astronomy, Rice University, Houston, TX, USA
| | - S. K. Kanungo
- Department of Physics and Astronomy, Rice University, Houston, TX, USA
| | - T. C. Killian
- Department of Physics and Astronomy, Rice University, Houston, TX, USA
| | - S. Yoshida
- Institute for Theoretical Physics, Vienna University of Technology, Vienna, Austria
| | - J. Burgdörfer
- Institute for Theoretical Physics, Vienna University of Technology, Vienna, Austria
| | - F. B. Dunning
- Department of Physics and Astronomy, Rice University, Houston, TX, USA
| |
Collapse
|
2
|
Wu J, Ma J, Zhang Y, Li Y, Wang L, Zhao Y, Chen G, Xiao L, Jia S. High sensitive trap loss spectroscopic detection of the lowest vibrational levels of ultracold molecules. Phys Chem Chem Phys 2011; 13:18921-5. [PMID: 21952322 DOI: 10.1039/c1cp22314c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a controllable three-dimensional fluorescence modulation technique for the high sensitive trap loss detection of ultracold molecules. The lowest vibrational levels (v = 0 and 1) of the pure long-range state 0(-)(g) (6S(1/2) + 6P(3/2)) of a cesium molecule are detected directly with high rotational resolution. Our technique proved to be a robust tool for effectively improving the detection sensitivity of trap loss spectroscopy.
Collapse
Affiliation(s)
- Jizhou Wu
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, College of Physics and Electronics Engineering, Shanxi University, Taiyuan, 030006, China
| | | | | | | | | | | | | | | | | |
Collapse
|
3
|
Guillon G, Zanchet A, Leino M, Viel A, Zillich RE. Theoretical Study of Rb2 in HeN: Potential Energy Surface and Monte Carlo Simulations. J Phys Chem A 2011; 115:6918-26. [DOI: 10.1021/jp112053b] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Grégroire Guillon
- Institut de Physique de Rennes, UMR 6251, CNRS & Université de Rennes I, F-35042 Rennes, France
| | | | | | | | | |
Collapse
|
4
|
Mickelson PG, Martinez YN, Saenz AD, Nagel SB, Chen YC, Killian TC, Pellegrini P, Côté R. Spectroscopic determination of the s-wave scattering lengths of 86Sr and 88Sr. PHYSICAL REVIEW LETTERS 2005; 95:223002. [PMID: 16384214 DOI: 10.1103/physrevlett.95.223002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2005] [Indexed: 05/05/2023]
Abstract
We report the use of photoassociative spectroscopy to determine the ground-state s-wave scattering lengths for the main bosonic isotopes of strontium, 86Sr and 88Sr. Photoassociative transitions are driven with a laser red detuned by up to 1400 GHz from the 1S0-1P1 atomic resonance at 461 nm. A minimum in the transition amplitude for 86Sr at -494 +/- 5 GHz allows us to determine the scattering lengths 610a0 < a86 < 2300a0 for 86Sr and a much smaller value of -1a0 < a88 < 13a0 for 88Sr.
Collapse
Affiliation(s)
- P G Mickelson
- Department of Physics and Astronomy, Rice University, Houston, Texas 77251, USA
| | | | | | | | | | | | | | | |
Collapse
|
5
|
Léonard J, Walhout M, Mosk AP, Müller T, Leduc M, Cohen-Tannoudji C. Giant helium dimers produced by photoassociation of ultracold metastable atoms. PHYSICAL REVIEW LETTERS 2003; 91:073203. [PMID: 12935015 DOI: 10.1103/physrevlett.91.073203] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2003] [Revised: 06/19/2003] [Indexed: 05/24/2023]
Abstract
We produce giant, purely long-range helium dimers by photoassociation of metastable helium atoms in a magnetically trapped, ultracold cloud. The photoassociation laser is detuned close to the atomic 2(3)S1-2(3)P0 line and produces strong heating of the sample when resonant with molecular bound states. The temperature of the cloud serves as an indicator of the molecular spectrum. We report good agreement between our spectroscopic measurements and our calculations of the five bound states belonging to a 0(+)(u) purely long-range potential well. These previously unobserved states have classical inner turning points of about 150a(0) and outer turning points as large as 1150a(0).
Collapse
Affiliation(s)
- J Léonard
- Ecole Normale Supérieure and Collège de France, Laboratoire Kastler Brossel, 24 rue Lhomond, 75231 Paris CEDEX 05, France
| | | | | | | | | | | |
Collapse
|
6
|
van Kempen EGM, Kokkelmans SJJMF, Heinzen DJ, Verhaar BJ. Interisotope determination of ultracold rubidium interactions from three high-precision experiments. PHYSICAL REVIEW LETTERS 2002; 88:093201. [PMID: 11864003 DOI: 10.1103/physrevlett.88.093201] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2001] [Indexed: 05/23/2023]
Abstract
Combining the measured binding energies of four of the most weakly bound rovibrational levels of the 87Rb2 molecule with results of two other recent high-precision experiments, we obtain exceptionally strong constraints on the atomic interaction parameters in a highly model independent analysis. The comparison of (85)Rb and (87)Rb data, where the two isotopes are related by a mass scaling procedure, plays a crucial role. We predict scattering lengths, clock shifts, and Feshbach resonances with an unprecedented level of accuracy. Two of the Feshbach resonances occur at easily accessible magnetic fields in mixed-spin channels. One is related to a d-wave shape resonance.
Collapse
Affiliation(s)
- E G M van Kempen
- Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | | | | | | |
Collapse
|
7
|
Brühl FR, Miron RA, Ernst WE. Triplet states of rubidium dimers on helium nanodroplets. J Chem Phys 2001. [DOI: 10.1063/1.1418747] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
8
|
Zinner G, Binnewies T, Riehle F, Tiemann E. Photoassociation of cold Ca atoms. PHYSICAL REVIEW LETTERS 2000; 85:2292-2295. [PMID: 10977994 DOI: 10.1103/physrevlett.85.2292] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2000] [Indexed: 05/23/2023]
Abstract
We present the first measurement of a photoassociative spectrum of an alkaline earth element near the dissociation limit. The observed spectrum of Ca2 formed from cold atoms shows the regular vibrational series with the characteristic spacing of the 1/R3 asymptotic potential. The interpretation is in principle simplified compared to previous measurements on alkali metals by the nondegenerate ground state and the missing hyperfine structure of 40Ca. As an example, we derive the natural decay rate of the excited atomic 4p 1P1 state from the positions of the observed vibrational and rotational resonances with reduced uncertainty compared to previous measurements.
Collapse
Affiliation(s)
- G Zinner
- Physikalisch-Technische Bundesanstalt, 38116 Braunschweig, Germany
| | | | | | | |
Collapse
|
9
|
Herschbach N, Tol PJ, Vassen W, Hogervorst W, Woestenenk G, Thomsen JW, Niehaus A. Photoassociation spectroscopy of cold He(2 3S) atoms. PHYSICAL REVIEW LETTERS 2000; 84:1874-7. [PMID: 11017649 DOI: 10.1103/physrevlett.84.1874] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/1999] [Indexed: 05/23/2023]
Abstract
We observe vibrational states by photoassociation spectroscopy of cold He(2 3S) atoms. Photoassociation resonances are detected as peaks in the Penning ionization rate over a frequency range of 20 GHz below the atomic 2 3S1-2 3P2 transition frequency. We have observed three vibrational series, of which two can be identified. A possible mechanism to explain the observed increase of the Penning ionization rate is discussed.
Collapse
Affiliation(s)
- N Herschbach
- Department of Physics and Astronomy, Vrije Universiteit, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | | | | | | | | | | | | |
Collapse
|
10
|
Abstract
State-selected rubidium-87 molecules were created at rest in a dilute Bose-Einstein condensate of rubidium-87 atoms with coherent free-bound stimulated Raman transitions. The transition rate exhibited a resonance line shape with an extremely narrow width as small as 1.5 kilohertz. The precise shape and position of the resonance are sensitive to the mean-field interactions between the molecules and the atomic condensate. As a result, we were able to measure the molecule-condensate interactions. This method allows molecular binding energies to be determined with unprecedented accuracy and is of interest as a mechanism for the generation of a molecular Bose-Einstein condensate.
Collapse
Affiliation(s)
- R Wynar
- Department of Physics, The University of Texas, Austin, TX 78712, USA
| | | | | | | | | |
Collapse
|
11
|
Stwalley WC, Wang H. Photoassociation of Ultracold Atoms: A New Spectroscopic Technique. JOURNAL OF MOLECULAR SPECTROSCOPY 1999; 195:194-228. [PMID: 10329265 DOI: 10.1006/jmsp.1999.7838] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The new spectroscopic technique of photoassociation of ultracold atoms is reviewed, with an emphasis on connecting this area to traditional bound-state molecular spectroscopy. In particular, in contrast to photoassociative spectra at thermal energies, which are broad and of low information content, photoassociative spectra of ultracold atoms are high resolution, permitting observation of small vibrational and rotational spacings of long-range molecular levels near dissociation (typically with outer classical turning points >20 Å). The types of detection and theoretical analysis employed are illustrated, primarily using the example of 39K2. Future directions and applications of this field (e.g., to ultracold molecular formation) are also discussed. Copyright 1999 Academic Press.
Collapse
Affiliation(s)
- WC Stwalley
- Department of Physics, University of Connecticut, 2152 Hillside Road, Storrs, Connecticut, 06269-3046
| | | |
Collapse
|
12
|
Wang H, Stwalley WC. Ultracold photoassociative spectroscopy of heteronuclear alkali-metal diatomic molecules. J Chem Phys 1998. [DOI: 10.1063/1.475987] [Citation(s) in RCA: 107] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
13
|
Wang H, Gould PL, Stwalley WC. Long-range interaction of the 39K(4s)+39K(4p) asymptote by photoassociative spectroscopy. I. The 0g− pure long-range state and the long-range potential constants. J Chem Phys 1997. [DOI: 10.1063/1.473804] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
14
|
Boesten HM, Tsai CC, Verhaar BJ, Heinzen DJ. Observation of a Shape Resonance in Cold-Atom Scattering by Pulsed Photoassociation. PHYSICAL REVIEW LETTERS 1996; 77:5194-5197. [PMID: 10062739 DOI: 10.1103/physrevlett.77.5194] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
15
|
Boesten HM, Vogels JM, Tempelaars JG, Verhaar BJ. Properties of cold collisions of 39K atoms and of 41K atoms in relation to Bose-Einstein condensation. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 54:R3726-R3729. [PMID: 9914023 DOI: 10.1103/physreva.54.r3726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
16
|
Ruprecht PA, Edwards M, Burnett K, Clark CW. Probing the linear and nonlinear excitations of Bose-condensed neutral atoms in a trap. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 54:4178-4187. [PMID: 9913968 DOI: 10.1103/physreva.54.4178] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
17
|
Edwards M, Ruprecht PA, Burnett K, Dodd RJ, Clark CW. Collective Excitations of Atomic Bose-Einstein Condensates. PHYSICAL REVIEW LETTERS 1996; 77:1671-1674. [PMID: 10063142 DOI: 10.1103/physrevlett.77.1671] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
18
|
Burnett K, Julienne PS, Suominen K. Laser-Driven Collisions between Atoms in a Bose-Einstein Condensed Gas. PHYSICAL REVIEW LETTERS 1996; 77:1416-1419. [PMID: 10063073 DOI: 10.1103/physrevlett.77.1416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
19
|
Boesten HM, Moerdijk AJ, Verhaar BJ. Dipolar decay in two recent Bose-Einstein condensation experiments. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 54:R29-R32. [PMID: 9913572 DOI: 10.1103/physreva.54.r29] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
20
|
Quantitative studies of Bose-Einstein condensation in a dilute atomic vapor. ACTA ACUST UNITED AC 1996. [DOI: 10.1007/bf02548112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
21
|
Abraham ER, McAlexander WI, Gerton JM, Hulet RG, Côté R, Dalgarno A. Singlet s-wave scattering lengths of 6Li and 7Li. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:R3713-R3715. [PMID: 9913449 DOI: 10.1103/physreva.53.r3713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
22
|
Hoston W, You L. Interference of two condensates. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:4254-4256. [PMID: 9913396 DOI: 10.1103/physreva.53.4254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
23
|
Dalfovo F, Stringari S. Bosons in anisotropic traps: Ground state and vortices. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:2477-2485. [PMID: 9913160 DOI: 10.1103/physreva.53.2477] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
24
|
Edwards M, Dodd RJ, Clark CW, Ruprecht PA, Burnett K. Properties of a Bose-Einstein condensate in an anisotropic harmonic potential. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:R1950-R1953. [PMID: 9913222 DOI: 10.1103/physreva.53.r1950] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
25
|
Wang H, Gould PL, Stwalley WC. Photoassociative spectroscopy of ultracold 39K atoms in a high-density vapor-cell magneto-optical trap. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:R1216-R1219. [PMID: 9913095 DOI: 10.1103/physreva.53.r1216] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
26
|
Moerdijk AJ, Boesten HM, Verhaar BJ. Decay of trapped ultracold alkali atoms by recombination. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:916-920. [PMID: 9912966 DOI: 10.1103/physreva.53.916] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
27
|
Abraham ERI, Ritchie NWM, McAlexander WI, Hulet RG. Photoassociative spectroscopy of long‐range states of ultracold 6Li2 and 7Li2. J Chem Phys 1995. [DOI: 10.1063/1.470296] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
28
|
Gibble K, Verhaar BJ. Eliminating cold-collision frequency shifts. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 52:3370-3373. [PMID: 9912627 DOI: 10.1103/physreva.52.3370] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
29
|
Bradley CC, Sackett CA, Tollett JJ, Hulet RG. Evidence of Bose-Einstein Condensation in an Atomic Gas with Attractive Interactions. PHYSICAL REVIEW LETTERS 1995; 75:1687-1690. [PMID: 10060366 DOI: 10.1103/physrevlett.75.1687] [Citation(s) in RCA: 188] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
30
|
Anderson MH, Ensher JR, Matthews MR, Wieman CE, Cornell EA. Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor. Science 1995; 269:198-201. [PMID: 17789847 DOI: 10.1126/science.269.5221.198] [Citation(s) in RCA: 905] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
A Bose-Einstein condensate was produced in a vapor of rubidium-87 atoms that was confined by magnetic fields and evaporatively cooled. The condensate fraction first appeared near a temperature of 170 nanokelvin and a number density of 2.5 x 10(12) per cubic centimeter and could be preserved for more than 15 seconds. Three primary signatures of Bose-Einstein condensation were seen. (i) On top of a broad thermal velocity distribution, a narrow peak appeared that was centered at zero velocity. (ii) The fraction of the atoms that were in this low-velocity peak increased abruptly as the sample temperature was lowered. (iii) The peak exhibited a nonthermal, anisotropic velocity distribution expected of the minimum-energy quantum state of the magnetic trap in contrast to the isotropic, thermal velocity distribution observed in the broad uncondensed fraction.
Collapse
|