Stationary light pulses and narrowband light storage in a laser-cooled ensemble loaded into a hollow-core fiber

Blatt, F. J.; Simeonov, Lachezar S.; Halfmann, Thomas; Peters, Thorsten

doi:10.1103/physreva.94.043833

Cited by 40 publications

(85 citation statements)

References 62 publications

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“…In many cases optical dipole traps are used to localise the atomic ensemble in a controllable way. These can be used to hold the atomic sample for a long duration [12,17,18] or to transport the atoms into a confined geometry such as a hollow-core fibre [19][20][21][22][23][24] or near to a structured device such as an atomic chip [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Light-shift spectroscopy of optically trapped atomic ensembles

2020

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We develop a method for extracting the physical parameters of interest for a conventional dipoletrapped cold atomic ensemble. This technique uses the spatially dependent ac-Stark shift of the trap itself to project the atomic distribution onto a light-shift broadened transmission spectrum. We develop a model that connects the atomic distribution with the expected transmission spectrum. We then demonstrate the utility of the technique by deriving the temperature, trap depth, lifetime, and trapped atom number from data that was taken in a single shot experimental measurement.

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Section: Introductionmentioning

confidence: 99%

Light-shift spectroscopy of optically trapped atomic ensembles

2020

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“…point out that for EIT SL in free‐space ensembles, the intensity profiles of the control fields effectively produce a waveguide due to the spatially varying refractive index. It was also seen in the results of the hollow‐core experiments that the transverse mode of the control fields gave rise to extra inhomogeneous broadening. The impact of the spatial mode on Raman SL has not yet been investigated in any detail.…”

Section: Theory Of Stationary Lightmentioning

confidence: 89%

“…In ref. [] Blatt et al. demonstrated SL formation with EIT in an atomic ensemble inside a hollow‐core using the scheme of Figure d with detunings large enough to suppress HOCs.…”

Section: Generation Of Stationary Lightmentioning

confidence: 99%

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Stationary Light in Atomic Media

et al. 2019

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When ensembles of atoms interact with coherent light fields, a great many interesting and useful effects can be observed. In particular, the group velocity of the coherent fields can be modified dramatically. Electromagnetically induced transparency is perhaps the best known example, giving rise to very slow light. Careful tuning of the optical fields can also produce stored light where a light field is mapped completely into a coherence of the atomic ensemble. In contrast to stored light, in which the optical field is extinguished, stationary light is a bright field of light with a group velocity of zero. Stationary light has applications in situations where it is important to maintain an optical field, such as attempts to engineer large nonlinear interactions. In this paper, the stationary light demonstrations published to date are reviewed and a unified theoretical framework that describes the experimental observations is provided. Possible applications of stationary light are also discussed, with a particular focus on all‐optical phase gates for quantum information technology.

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“…This also increases the optical depth D opt , which is a figure of merit for the effective light-matter interaction strength for an ensemble of atoms. Achievements with cold atoms in hollow-core fibers so far include ground-state electro-magnetically induced transparency [1][2][3], used for example for an all-optical switch [1] and for light storage [3], exciting and probing Rydberg atoms [4], precision spectroscopy [5], and atom interferometry [6].…”

Section: Introductionmentioning

confidence: 99%

Highly controlled optical transport of cold atoms into a hollow-core fiber

et al. 2018

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We report on an efficient and highly controlled cold atom hollow-core fiber interface, suitable for quantum simulation, information, and sensing. The main focus of this manuscript is a detailed study on transporting cold atoms into the fiber using an optical conveyor belt. We discuss how we can precisely control the spatial, thermal, and temporal distribution of the atoms by, e.g., varying the speed at which the atoms are transported or adjusting the depth of the transport potential according to the atomic position. We characterize the transport of atoms to the fiber tip for these different parameters. In particular, we show that by adapting the transport potential we can lower the temperature of the transported atoms by a factor of 6, while reducing the transport efficiency only by a factor 2. For atoms transported inside the fiber, we can obtain a transport efficiency into the fiber of more than 40% and we study the influence of the different transport parameters on the time-dependent optical depth signal. When comparing our measurements to the results of a classical transport simulation, we find a good qualitative agreement.

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Stationary light pulses and narrowband light storage in a laser-cooled ensemble loaded into a hollow-core fiber

Cited by 40 publications

References 62 publications

Light-shift spectroscopy of optically trapped atomic ensembles

Light-shift spectroscopy of optically trapped atomic ensembles

Stationary Light in Atomic Media

Highly controlled optical transport of cold atoms into a hollow-core fiber

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