Polarization-selective optical nonlinearities in cold Rydberg atoms

Wu, Jin-Hui; Artoni, M.; Rocca, G. C. La

doi:10.1103/physreva.92.063805

Cited by 8 publications

(5 citation statements)

References 42 publications

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“…A weak signal pulse trapped by a probe soliton has been explored deeply in a tripod-type atomic system via double EIT [33,34], but no (3+1)D LBs are touched. In contrast, the trapping phenomenon presented here in our work are based on (3+1)D LB with inverted-Y atomic gas (even with Rydberg gas [44][45][46]), and the trajectories of the localized wave packets can be controlled through an SG gradient magnetic field. The research results predicted here may not only open a route for the study of weak-light nonlinear optics but also have potential applications in the precision measurements and optical information processing and transmission (e.g., design of all-optical switching at very low light level).…”

Section: Introductionmentioning

confidence: 90%

Manipulation of a weak signal pulse by optical soliton via double electromagnetically induced transparency

et al. 2019

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We propose a scheme to realize the manipulation of a weak signal pulse by ultraslow optical soliton in a coherent inverted-Y-type atomic system via double electromagnetically induced transparency (EIT). Based on Maxwell-Bloch equations, we derive nonlinear equations governing the spatial-temporal evolution of the probe and signal pulse envelopes. We show the giant enhancement of optical Kerr nonlinearity can be obtained under the condition of the double EIT, which results in the generation of a (2+1)-dimension optical soliton and can realize the manipulation of a weak signal pulse. Applying a far-detuned laser field to the system, we find that a weak signal pulse can be trapped by a (3+1)dimension light bullet. In particular, the trajectories of the light bullet and trapped signal pulse can be manipulated and controlled by introducing a Stern-Gerlach gradient magnetic field. The results predicted here may not only open a route for the study of weak-light nonlinear optics but also have potential applications in the precision measurements and optical information processing and transmission.

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Section: Introductionmentioning

confidence: 90%

Manipulation of a weak signal pulse by optical soliton via double electromagnetically induced transparency

et al. 2019

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“…As a tunable quantum scheme, the system involving Rydberg atoms has been widely used in quantum computing [36][37][38][39][40], electromagnetic field sensing [41][42][43], and quantum optics [44][45][46][47][48][49][50]. The main reason is the advantage of the cooperation between the long lifetime of Rydberg states and the coherent control of the interactions between two close Rydberg atoms arising from the large electric dipole moments due to the large atomic size.…”

Section: Introductionmentioning

confidence: 99%

Spatial Kramers-Kronig relation and unidirectional light reflection induced by Rydberg dipole-dipole interactions

Zheng¹,

Zhang²,

Liu³

et al. 2021

Preprint

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For tunable control of asymmetric light reflection, we propose a Rydberg atomic system of the optical response varying in space induced by the long-range position-dependent Rydberg dipoledipole interaction either in the type of self-van der Waals dipole-dipole interaction or the cross Förster-like dipole-dipole exchange interaction. In such a one-dimensional system consisting of a control atomic driven upon the Rydberg state and a homogeneous target atomic ensemble, the nonlocalized action from the control atom on the target atoms gradually decreases with the distance between the control and target atoms. Our scheme yields a nonlinear correspondence from a finite spectra range to a finite spatial range of susceptibility via the nonlinear characteristics of Rydberg interaction relative to the position. Therefore, the asymmetric reflection can be induced via the spatial modulation on the target ensemble. In particular, the reflection from one direction can be completely suppressed when the absorption and dispersion parts of the susceptibility are modulated to satisfy the spatial Kramers-Kronig relation in an infinite spectral range. The opposite reflection exhibits a band of a small nonzero reflectivity due to the realistic restriction of the cold atomic density of a relatively small value. Thus, via trapping the target atoms in the optical lattice for the Bragg scattering, we enhance the nonzero reflection obviously and retain the directional reflectionlessness.

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“…Recently, studies on the EIT effect have been further extended to cold Rydberg atoms [8][9][10], yielding then additional applications as described in a recent review [11]. The Rydberg-EIT effect can be explored, for instance, to simulate many-body quantum physics [12,13], achieve single-photon transistor [14,15], realize quantum phase gate [16][17][18], and implement quantum information processing [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetically induced transparency in thermal Rydberg atoms: superatom model with finite Doppler broadening

Bai

Bao

Tian

et al. 2018

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

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We study the steady optical responses of a cold atomic ensemble driven into the three-level ladder configuration involving a Rydberg state at finite temperatures. By improving the superatom model with thermal movement included, we calculate relevant atomic coherence effects and find that the residual Doppler broadening at the mK-K temperatures will weaken the nonclassical properties of transmitted probe photons. Furthermore, propagation directions of the probe and coupling fields have a great influence on various properties related to electromagnetically induced transparency. That is, the residual Doppler effect is more destructive to relevant atomic coherence effects in the co-propagation case but can be partially eliminated in the counter-propagation case.

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Polarization-selective optical nonlinearities in cold Rydberg atoms

Cited by 8 publications

References 42 publications

Manipulation of a weak signal pulse by optical soliton via double electromagnetically induced transparency

Manipulation of a weak signal pulse by optical soliton via double electromagnetically induced transparency

Spatial Kramers-Kronig relation and unidirectional light reflection induced by Rydberg dipole-dipole interactions

Electromagnetically induced transparency in thermal Rydberg atoms: superatom model with finite Doppler broadening

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