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Autler-Townes splitting of ultracold cesium Rydberg atoms

Xue Yong-Mei Hao Li-Ping Jiao Yue-Chun Han Xiao-Xuan Bai Su-Ying Zhao Jian-Ming Jia Suo-Tang

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Autler-Townes splitting of ultracold cesium Rydberg atoms

Xue Yong-Mei, Hao Li-Ping, Jiao Yue-Chun, Han Xiao-Xuan, Bai Su-Ying, Zhao Jian-Ming, Jia Suo-Tang
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  • Autler-Townes (A-T) splitting, known as an AC Stark effect, shows a change of an absorption/emission spectral line of a probe beam when an oscillating field is tuned in resonance with the atomic or molecular transition. The A-T splitting is observed in different three-level atoms and widely investigated in a vapor cell and in a magneto-optical trap (MOT). The A-T splitting plays an important role in the atom-based microwave electric-field measurements where a cascade three-level system involving Rydberg state is adopted. In this work, an A-T splitting is observed in an ultracold cesium Rydberg gas, which is cooled down to about 100 pK and center density is about 1010 cm-3 in a conventional MOT by using the laser cooling technology. We present the A-T spectrum in a ladder three-level atomic system involving a 34D5/2 Rydberg state. The cesium ground state (6S1/2), excited state (6P3/2) and Rydberg state (34D5/2) constitute a Rydberg three-level system. A coupling laser, locked to the Rydberg transition by using a Rydberg electromagnetically induced transparency signal that is obtained from a cesium room-temperature vapor cell, couples 6P3/2 (F'=5) 34D5/2 Rydberg transition. A weak probe laser, stabilized to a ground-state transition by using a polarization spectroscopy, is swept, covering the transition 6S1/2 (F=4) 6P3/2 (F'=5) with a double-passed acousto-optic modulator. The probe and coupling lasers are counter-propagated through the MOT center. The power of probe light is 200 pW, corresponding Rabi frequency p=21.05 MHz. During the experiment, 50 s after turning off the trapping laser, both the coupling and probe beams are switched on and last 100 s. The A-T spectrum as a function of the probe detuning is detected with a single-photon counter module detector. We use Gaussian multiple peak fitting to obtain the positions of the A-T peaks and the A-T splitting. The measured A-T splitting is proportional to the Rabi frequency of the coupling light. We numerically solve the density matrix equations to obtain the A-T spectrum, and the calculations reproduce A-T spectra well. The measured A-T splitting shows good agreement with the theoretical calculation for Rabi frequency of the coupling light c29 MHz. The A-T splitting is less than the calculation for the case of c29 MHz, the deviation is mainly attributed to the increased dephasing rate induced by the strong interaction between Rydberg atoms, whose number increases with the coupling laser Rabi frequency. In this work, the adopted method for the cascade three-level system involving Rydberg state is also suitable for -and V-type cases.
    • Funds: Project supported by the National Key RD Program of China (Grant No. 2017YFA0304203), the National Natural Science Foundation of China (Grant Nos. 11274209, 61475090, 61775124), the Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China (Grant No. IRT13076), the Key Program of the National Natural Science Foundation of China (Grant No. 11434007), and the Research Project Supported by Shanxi Scholarship Council of China (Grant No. 2014-009).
    [1]

    Autler S H, Townes C H 1955 Phys. Rev. 100 703

    [2]

    Scully M O, Zubairy M S 1997 Quantum Optics (Cambridge: Cambridge University Press) pp225-230

    [3]

    Holloway C L, Simons M T, Gordon J A, Dienstfrey A, Anderson D A, Raithel G 2017 J. Appl. Phys. 121 233106

    [4]

    Picque J L, Pinard J 1976 J. Phys. B 9 L77

    [5]

    Cahuzac P, Vetter R 1976 Phys. Rev. A 14 270

    [6]

    Mitsunaga M, Imoto N 1999 Phys. Rev. A 59 4773

    [7]

    Liang Q, Yang B, Yang J, Zhang T, Wang J 2010 Chin. Phys. B 19 113207

    [8]

    Baur M, Filipp S, Bianchetti R, Fink J M, Gppl M, Steffen L, Leek P J, Blais A, Wallraff A 2009 Phys. Rev. Lett. 102 243602

    [9]

    Sillanp M A, Li J, Cicak K, Altomare F, Park J I, Simmonds R W 2009 Phys. Rev. Lett. 103 193601

    [10]

    Ahmed E, Hansson A, Qi P, Kirova T, Lazoudis A, Kotochigova S, Lyyra A M, Li L, Qi J, Magnier S 2006 J. Chem. Phys. 124 084308

    [11]

    Piotrowicz M J, Maccormick C, Kowalczyk A, Bergamini S, Beterov I I, Yakshina E A 2011 New J. Phys. 13 093012

    [12]

    Gallagher T F 1994 Rydberg Atoms (Cambridge: Cambridge University Press) pp38-49

    [13]

    Isenhower L, Urban E, Zhang X L, Gill A T, Henage T, Johnson T A, Walker T G, Saffman M 2010 Phys. Rev. Lett. 104 010503

    [14]

    Feng Z G, Zhang H, Che J L, Zhang L J, Li C Y, Zhao J M, Jia S T 2011 Phys. Rev. A 83 042711

    [15]

    Teo B K, Feldbaum D, Cubel T, Guest J R, Berman P R, Raithel G 2003 Phys. Rev. A 68 053407

    [16]

    Zhang H, Wang L M, Chen J, Bao S X, Zhang L J, Zhao J M, Jia S T 2013 Phys. Rev. A 87 033835

    [17]

    DeSalvo B J, Aman J A, Gaul C, Pohl T, Yoshida S, Burgdrfer J, Hazzard K R A, Dunning F B, Killian T C 2016 Phys. Rev. A 93 022709

    [18]

    Mohapatra A K, Jackson T R, Adams C S 2007 Phys. Rev. Lett. 98 113003

    [19]

    Gorniaczyk H, Tresp C, Schmidt J, Fedder H, Hofferberth S 2014 Phys. Rev. Lett. 113 053601

    [20]

    Viscor D, Li W, Lesanovsky I 2015 New J. Phys. 17 033007

    [21]

    Sedlacek J, Schwettmann A, Kubler H, Lw R, Pfau T, Shaffer J P 2012 Nat. Phys. 8 819

    [22]

    Pearman C P, Adams C S, Cox S G, Griffin P F, Smith D A, Hughes I G 2002 J. Phys. B 35 5141

    [23]

    Jiao Y C, Li J K, Wang L M, Zhang H, Zhang L J, Zhao J M, Jia S T 2016 Chin. Phys. B 25 053201

    [24]

    Zhang H, Zhang L J, Wang L M, Bao S X, Zhao J M, Jia S T 2014 Phys. Rev. A 90 043849

  • [1]

    Autler S H, Townes C H 1955 Phys. Rev. 100 703

    [2]

    Scully M O, Zubairy M S 1997 Quantum Optics (Cambridge: Cambridge University Press) pp225-230

    [3]

    Holloway C L, Simons M T, Gordon J A, Dienstfrey A, Anderson D A, Raithel G 2017 J. Appl. Phys. 121 233106

    [4]

    Picque J L, Pinard J 1976 J. Phys. B 9 L77

    [5]

    Cahuzac P, Vetter R 1976 Phys. Rev. A 14 270

    [6]

    Mitsunaga M, Imoto N 1999 Phys. Rev. A 59 4773

    [7]

    Liang Q, Yang B, Yang J, Zhang T, Wang J 2010 Chin. Phys. B 19 113207

    [8]

    Baur M, Filipp S, Bianchetti R, Fink J M, Gppl M, Steffen L, Leek P J, Blais A, Wallraff A 2009 Phys. Rev. Lett. 102 243602

    [9]

    Sillanp M A, Li J, Cicak K, Altomare F, Park J I, Simmonds R W 2009 Phys. Rev. Lett. 103 193601

    [10]

    Ahmed E, Hansson A, Qi P, Kirova T, Lazoudis A, Kotochigova S, Lyyra A M, Li L, Qi J, Magnier S 2006 J. Chem. Phys. 124 084308

    [11]

    Piotrowicz M J, Maccormick C, Kowalczyk A, Bergamini S, Beterov I I, Yakshina E A 2011 New J. Phys. 13 093012

    [12]

    Gallagher T F 1994 Rydberg Atoms (Cambridge: Cambridge University Press) pp38-49

    [13]

    Isenhower L, Urban E, Zhang X L, Gill A T, Henage T, Johnson T A, Walker T G, Saffman M 2010 Phys. Rev. Lett. 104 010503

    [14]

    Feng Z G, Zhang H, Che J L, Zhang L J, Li C Y, Zhao J M, Jia S T 2011 Phys. Rev. A 83 042711

    [15]

    Teo B K, Feldbaum D, Cubel T, Guest J R, Berman P R, Raithel G 2003 Phys. Rev. A 68 053407

    [16]

    Zhang H, Wang L M, Chen J, Bao S X, Zhang L J, Zhao J M, Jia S T 2013 Phys. Rev. A 87 033835

    [17]

    DeSalvo B J, Aman J A, Gaul C, Pohl T, Yoshida S, Burgdrfer J, Hazzard K R A, Dunning F B, Killian T C 2016 Phys. Rev. A 93 022709

    [18]

    Mohapatra A K, Jackson T R, Adams C S 2007 Phys. Rev. Lett. 98 113003

    [19]

    Gorniaczyk H, Tresp C, Schmidt J, Fedder H, Hofferberth S 2014 Phys. Rev. Lett. 113 053601

    [20]

    Viscor D, Li W, Lesanovsky I 2015 New J. Phys. 17 033007

    [21]

    Sedlacek J, Schwettmann A, Kubler H, Lw R, Pfau T, Shaffer J P 2012 Nat. Phys. 8 819

    [22]

    Pearman C P, Adams C S, Cox S G, Griffin P F, Smith D A, Hughes I G 2002 J. Phys. B 35 5141

    [23]

    Jiao Y C, Li J K, Wang L M, Zhang H, Zhang L J, Zhao J M, Jia S T 2016 Chin. Phys. B 25 053201

    [24]

    Zhang H, Zhang L J, Wang L M, Bao S X, Zhao J M, Jia S T 2014 Phys. Rev. A 90 043849

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Publishing process
  • Received Date:  08 June 2017
  • Accepted Date:  27 July 2017
  • Published Online:  05 November 2017

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