Recoil-induced resonance spectroscopy and nondestructive temperature measurement of cold rubidium atoms inside an integrating sphere

Wang, Wenli; Deng, Jianliao; Wang, Yuzhu

doi:10.1364/josab.32.002441

Cited by 7 publications

(5 citation statements)

References 30 publications

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“…These terms act as "sources" for the optical coherences as in Eq. (10). In this order of perturbation, they take into account effects that depend on one single "kick" of momentum, h∆ k, generating signals in different directions.…”

Section: Theoretical Modelmentioning

confidence: 99%

“…After substitution of ( 15) into (10), we now obtain the usual local optical coherence, given by [1]:…”

Section: Theoretical Modelmentioning

confidence: 99%

“…From now on, we shall use ρ I ij ( p, p , t) for coherences and populations in the first (writing) phase of the theoretical model, ρ II ij ( p, p , t) for the second (dark) phase and ρ III ij ( p, p , t) for the third (reading) phase. Turning back to (11) and (10), and noting that turning off both fields means Ω e = Ω p = Ω = 0, these equations simplify to:…”

Section: Theoretical Modelmentioning

confidence: 99%

“…More recent applications of RIR for atomic thermometry can be found in Refs. [9,10]. It was also used for optical switching [11] and to probe the transient dynamic of atoms in 1D optical lattices [12].…”

Section: Introductionmentioning

confidence: 99%

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Atomic memory based on recoil-induced resonances

Capella¹,

Melo²,

Lopez³

et al. 2021

Preprint

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In this work we perform a detailed theoretical and experimental investigation of an atomic memory based on recoil-induced resonance in cold cesium atoms. We consider the interaction of a nearly degenerated pump and probe beams with an ensemble of two-level atoms. A full theoretical density matrix calculation in the extended Hilbert space of the internal and external atomic degrees of freedom allows us to obtain, from first principles, the transient and stationary responses determining the probe transmission and the forward four-wave mixing spectra. These two signals are generated together at the same order of perturbation with respect to the intensities of pump and probe beams. However, during continuous excitation of the sample, they are detected in very different ways and the signal at the probe transmission appears to be considerably larger, being the main focus of investigation prior to this work. Moreover, we have investigated the storage of optical information in the atomic external degrees of freedom, which provided a simple interpretation for the previously-reported non-volatile character of this memory. The retrieved signals after storage reveal the equivalent role of probe transmission and four-wave mixing, as the two signals have similar amplitudes. Probe transmission and forward four-wave-mixing spectra were then experimentally measured for both continuous excitation and after storage. The experimental observations are in good agreement with the developed theory and open a new pathway for the reversible exchange of optical information with atomic systems.

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Section: Theoretical Modelmentioning

confidence: 99%

“…After substitution of ( 15) into (10), we now obtain the usual local optical coherence, given by [1]:…”

Section: Theoretical Modelmentioning

confidence: 99%

Section: Theoretical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Atomic memory based on recoil-induced resonances

Capella¹,

Melo²,

Lopez³

et al. 2021

Preprint

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“…DLC technique has been studied both in slowing an atomic beam and in cooling of atoms from vapor background [2][3][4][5][6][7]. Many efforts have been made on the properties of cold atoms captured by DLC including tem-perature, atomic density, localization, scale and spectroscopic effects [18][19][20][21][22][23][24][25]. However, much less attention was paid to one-dimensional configuration.…”

Section: Introductionmentioning

confidence: 99%

Quasi one-dimensional diffuse laser cooling of atoms

Wan,

Wang,

Zhang

et al. 2021

Preprint

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We demonstrate experimentally the generation of one-dimensional cold gases of 87 Rb atoms by diffuse laser cooling (DLC). A horizontal slender vacuum glass tube with length of 105 cm and diameter of 2 cm is used in our experiment. The diffuse laser light inside the tube, which is generated by multi-reflection of injected lasers, cools the background vapor atoms. With 250 mW of cooling light and 50 mW of repumping light, an evenly distributed meter-long profile of atom cloud is obtained. We observe a factor 4 improvement on the atomic OD for a typical cooling duration of 170 ms and a sub-Doppler atomic temperature of 25 µk. The maximum number of detected cold atoms remain constant for a free-fall duration of 30 ms. Such samples are ideal for many quantum optical experiments involving electromagnetically induced transparency, electronically highly excited (Rydberg) atoms and quantum precision measurements.

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