Laser frequency stabilization to excited state transitions using electromagnetically induced transparency in a cascade system

Abel, R. P.; Mohapatra, Ashok K.; Bason, M. G.; Pritchard, Jonathan D.; Weatherill, Kevin J.; Raitzsch, Ulrich; Adams, Charles S.

doi:10.1063/1.3086305

Cited by 100 publications

(93 citation statements)

References 29 publications

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“…The coupling beam is produced by a frequency-doubled cw diode laser (Toptica TA-SHG). It is directly locked to the Rydberg state of interest by vapor cell EIT as described in [31]. This allows direct stable locking to both s-and d-Rydberg states in the range n = 19...70; the fine structure of the d states is also well resolved in the spectroscopy.…”

Section: Methodsmentioning

confidence: 99%

Spatially resolved excitation of Rydberg atoms and surface effects on an atom chip

et al. 2010

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General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. We demonstrate spatially resolved, coherent excitation of Rydberg atoms on an atom chip. Electromagnetically induced transparency (EIT) is used to investigate the properties of the Rydberg atoms near the gold-coated chip surface. We measure distance-dependent shifts (∼10 MHz) of the Rydberg energy levels caused by a spatially inhomogeneous electric field. The measured field strength and distance dependence is in agreement with a simple model for the electric field produced by a localized patch of Rb adsorbates deposited on the chip surface during experiments. The EIT resonances remain narrow (<4 MHz) and the observed widths are independent of atom-surface distance down to ∼20 µm, indicating relatively long lifetime of the Rydberg states. Our results open the way to studies of dipolar physics, collective excitations, quantum metrology, and quantum information processing involving interacting Rydberg excited atoms on atom chips.

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Section: Methodsmentioning

confidence: 99%

Spatially resolved excitation of Rydberg atoms and surface effects on an atom chip

et al. 2010

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“…We show that if the population of state |1 is coherently pumped from another state with a weak coupling field [ Fig. 1(c)] the absorption line shape remains a Lorentzian but its FWHM is solely determined by the natural linewidth of the upper state 2 as shown in Fig. 1(d) because the lower state is effectively stable.…”

Section: Introductionmentioning

confidence: 96%

“…(A1) into Eqs. (2), equate the terms of the same power in p , and then solve for ρ (n) ij from n = 0 to all n [27].…”

Section: Appendix A: Steady State Solutions By Perturbation Techniquementioning

confidence: 99%

“…Spectroscopy of excited state transitions is of growing interest for a variety of applications including the search for stable frequency references [1,2], state lifetime measurement [3], optical filtering [4], frequency up-conversion [5], multiphoton laser cooling [6], as well as Rydberg gases [7,8] and their application to electro-optics [9][10][11] and nonlinear optics [12]. Twophoton excited state spectroscopy can be achieved without significant transfer of population out of the ground state using electromagnetically induced transparency (EIT) [13] in the ladder configuration [14].…”

Section: Introductionmentioning

confidence: 99%

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Subnatural linewidths in two-photon excited-state spectroscopy

et al. 2012

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Publisher's copyright statement:Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. We investigate, theoretically and experimentally, absorption on an excited-state atomic transition in a thermal vapor where the lower state is coherently pumped. We find that the transition linewidth can be subnatural, that is, less than the combined linewidth of the lower and upper state. For the specific case of the 6P 3/2 → 7S 1/2 transition in room temperature cesium vapor, we measure a minimum linewidth of 6.6 MHz compared with the natural width of 8.5 MHz. Using perturbation techniques, an expression for the complex susceptibility is obtained which provides excellent agreement with the measured spectra.

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“…Following a 1 ms free expansion, EIT spectroscopy is performed using counter-propagating probe and coupling lasers, both σ + -polarized. The coupling laser is a frequency doubled diode laser system at 480 nm, which is stabilized to the 5p 2 P 3/2 F ′ = 3 → 58d 2 D 5/2 transition using EIT in a room temperature Rb cell [15,16]. This is focused to a 1/e 2 waist of 215 ± 10 µm with a power of 80 mW, giving a peak Rabi frequency of Ω c /2π = 4.6 MHz.…”

Section: Methodsmentioning

confidence: 99%

Optical non-linearity in a dynamical Rydberg gas

Pritchard¹,

Gauguet²,

Weatherill³

et al. 2011

J. Phys. B: At. Mol. Opt. Phys.

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Abstract. We use the technique of electro-magnetically induced transparency (EIT) to probe the effect of attractive dipole-dipole interactions in a highly excited Rydberg gas. The transient character of the EIT response is investigated by rapidly scanning the probe laser through resonance. We characterize the resulting cooperative optical non-linearity as a function of probe strength, density and scan direction. For the 58D 5/2 Rydberg state, an atom density of 1.6 × 10 10 cm −3 and a positive frequency scan we measure a third-order non-linearity of χ (3) = 5 × 10 −7 m 2 V −2 . For the reverse scan we observe a second order non-linearity of χ (2) = 5 × 10 −6 mV −1 . The contrasting behaviour can be explained in terms of motional effects and resonant excitation of Rydberg pairs.

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Laser frequency stabilization to excited state transitions using electromagnetically induced transparency in a cascade system

Cited by 100 publications

References 29 publications

Spatially resolved excitation of Rydberg atoms and surface effects on an atom chip

Spatially resolved excitation of Rydberg atoms and surface effects on an atom chip

Subnatural linewidths in two-photon excited-state spectroscopy

Optical non-linearity in a dynamical Rydberg gas

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