Absolute absorption on rubidium D lines: comparison between theory and experiment

Siddons, Paul; Adams, Charles S.; Ge, Chunhua; Hughes, Ifan G.

doi:10.1088/0953-4075/41/15/155004

Cited by 224 publications

(229 citation statements)

References 41 publications

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“…The pulse was produced using a Pockels cell (PoC) placed between two crossed polarisers, which was driven by a pulse generator with a repetition rate of 50 Hz. The polarisations of the separate beams were then adjusted with waveplates before entering the vapour cell, and the cw beam was attenuted to 30 nW/mm 2 such that it was in the weak-probe limit [19]. The 75 mm fused silica cell contained a mixture of the two naturally occuring isotopes of Rb according to the ratio 87 Rb: 85 Rb 99:1.…”

Section: Experimental Methodsmentioning

confidence: 99%

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A gigahertz-bandwidth atomic probe based on the slow-light Faraday effect

et al. 2009

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The ability to control the speed and polarisation of light pulses will allow for faster data flow in optical networks of the future. Optical delay and switching have been achieved using slow-light techniques in various media, including atomic vapour. Most of these vapour schemes utilise resonant narrowband techniques for optical switching, but suffer the drawback of having a limited frequency range or high loss. In contrast, the Faraday effect in a Doppler-broadened slow-light medium allows polarisation switching over tens of GHz with high transmission. This large frequency range opens up the possibility of switching telecommunication bandwidth pulses and probing of dynamics on a nanosecond timescale. Here we demonstrate the slow-light Faraday effect for light detuned far from resonance. We show that the polarisation dependent group index can split a linearly polarised nanosecond pulse into left and right circularly polarised components. The group index also enhances the spectral sensitivity of the polarisation rotation, and large rotations of up to 15π rad are observed for continuous-wave light. Finally, we demonstrate dynamic broadband pulse switching, by rotating a linearly polarised nanosecond pulse from vertical to horizontal with no distortion and transmission close to unity.

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Section: Experimental Methodsmentioning

confidence: 99%

“…Such applications will be the focus of future work. The experimental data are compared to the predictions of a theoretical model presented in reference [19] in figure 3(b). The theoretical model assumes a linear Zeeman response to the applied field.…”

Section: Spectral Dependence Of Polarisation Rotationmentioning

confidence: 99%

A gigahertz-bandwidth atomic probe based on the slow-light Faraday effect

et al. 2009

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“…[36]. For weak probe intensity, the transmission of a monochromatic wave of angular frequency ω through an atomic vapor with uniform density is given by…”

Section: Theorymentioning

confidence: 99%

An artificial Rb atom in a semiconductor with lifetime-limited linewidth

et al. 2015

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We report results important for the creation of a best-of-both-worlds quantum hybrid system consisting of a solid-state source of single photons and an atomic ensemble as quantum memory. We generate single photons from a GaAs quantum dot (QD) frequency matched to the Rb D2 transitions and then use the Rb transitions to analyze spectrally the quantum dot photons. We demonstrate lifetime-limited QD linewidths (1.42 GHz) with both resonant and nonresonant excitation. The QD resonance fluorescence in the low power regime is dominated by Rayleigh scattering, a route to match quantum dot and Rb atom linewidths and to shape the temporal wave packet of the QD photons. Noise in the solid-state environment is relatively benign: there is a blinking of the resonance fluorescence at MHz rates but negligible dephasing of the QD excitonic transition. We therefore demonstrate significant progress towards the realization of an ideal solid-state source of single photons at a key wavelength for quantum technologies.

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“…It is worth noting that the total susceptibility in this case is different from the total susceptibility calculated for the case of incoherent pumping. The total susceptibility for incoherent pumping is the convolution between a Lorentzian and a Gaussian, resulting in a Voigt profile [24].…”

Section: Effect Of Doppler Broadeningmentioning

confidence: 99%

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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Absolute absorption on rubidium D lines: comparison between theory and experiment

Cited by 224 publications

References 41 publications

A gigahertz-bandwidth atomic probe based on the slow-light Faraday effect

A gigahertz-bandwidth atomic probe based on the slow-light Faraday effect

An artificial Rb atom in a semiconductor with lifetime-limited linewidth

Subnatural linewidths in two-photon excited-state spectroscopy

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