Journal ArticleDOI
Competition between two four-wave mixing channels via atomic coherence
TLDR
In this article, two four-wave mixing (FWM) processes can coexist in a four-level Y-type atomic system with carefully arranged coupling laser beams, which can be tuned to overlap or separate by various frequency detunings.Abstract:
Two four-wave-mixing (FWM) processes can coexist in a four-level Y-type atomic system with carefully arranged coupling laser beams. The generated two FWM signal beams fall into two simultaneously opened dual electromagnetically induced transparency (EIT) windows, which can be tuned to overlap or separate by various frequency detunings. The authors report our experimental observation of competing FWM processes, especially mutual suppression of the two FWM signals when the two EIT windows merge in frequency. Controlling FWM processes can have important applications in wavelength conversion for optical communication.read more
Citations
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High-precision atom localization via controllable spontaneous emission in a cycle-configuration atomic system.
TL;DR: High-precision and high-resolution 2D atom localization induced by the quantum interference between the multiple spontaneous decay channels is demonstrated and can achieve 100% probability of finding the atom at an expected position by choosing appropriate system parameters under certain conditions.
Journal ArticleDOI
Observation of enhancement and suppression in four-wave mixing processes
TL;DR: In this paper, the power dependences of enhancement and suppression in four-wave mixing (FWM) processes were investigated. But the power dependence on the interference was not investigated.
Journal ArticleDOI
Complete wavelength mismatching effect in a Doppler broadened Y-type six-level EIT atomic medium
Vineet Bharti,Ajay D. Wasan +1 more
TL;DR: In this article, the effect of varying control field wavelengths and closely spaced hyperfine levels in the 5 P 3 / 2 state of 87 Rb on the Doppler broadened Y-type six-level atomic system was investigated using a density matrix approach.
Journal ArticleDOI
Two-dimensional atom localization via phase- sensitive absorption-gain spectra in five-level hyper inverted-Y atomic systems
TL;DR: In this paper, a scheme for realizing two-dimensional atom localization in the sub-wavelength domain is proposed in a microwave-driven five-level hyper inverted-Y atomic system in which the atom interacts with a weak probe field, two control fields together with two orthogonal standing-wave fields.
Journal ArticleDOI
Dynamical control of soliton formation and propagation in a Y-type atomic system with dual ladder-type electromagnetically induced transparency
TL;DR: In this paper, the nonlinear interaction between a weak-pulsed probe field and a four-level Y-type atomic system with dual ladder-type electromagnetically induced transparency was investigated.
References
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Journal ArticleDOI
Electromagnetically Induced Transparency
TL;DR: Electromagnetic induced transparency is a technique for eliminating the effect of a medium on a propagating beam of electromagnetic radiation EIT may also be used, but under more limited conditions, to eliminate optical self-focusing and defocusing and to improve the transmission of laser beams through inhomogeneous refracting gases and metal vapors, as figure 1 illustrates.
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Electromagnetically induced transparency in ladder-type inhomogeneously broadened media: Theory and experiment
TL;DR: A theory of electromagnetically induced transparency in a three-level, ladder-type Doppler-broadened medium is developed, paying special attention to the case where the coupling and probe beams are counterpropagating and have similar frequencies, so as to reduce the total Dopplers width of the two-photon process.
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Efficient low-intensity optical phase conjugation based on coherent population trapping in sodium.
TL;DR: A theoretical model is presented that supports observations of optical phase-conjugate gain in sodium vapor by showing that coherent population trapping can write large-amplitude nonlinear-optical gratings at laser intensities well below those needed to saturate the optical transitions.
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Transporting and time reversing light via atomic coherence.
Alexander S. Zibrov,Andrey B. Matsko,Olga Kocharovskaya,Yu. V. Rostovtsev,George R. Welch,Marlan O. Scully,Marlan O. Scully +6 more
TL;DR: Basic issues central to the storage of quantum information in a coherently prepared atomic medium such as the role of adiabaticity are studied and transporting, multiplexing, and time reversing of stored light are proposed.
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Inhibition and Enhancement of Two Photon Absorption.
TL;DR: Possibility of considerable enhancement of two photon absorption even in the presence of Doppler broadening is demonstrated.