Journal ArticleDOI
Highly efficient four-wave mixing in double- Λ system in ultraslow propagation regime
Ying Wu,Ying Wu,Xiaoxue Yang +2 more
TLDR
In this article, a time-dependent analysis of four-wave mixing in an ultraslow-propagation regime was performed and the authors obtained the analytical expressions of pulsed probe laser, FWM-generated pulse, phase shifts and absorption coefficients, group velocities, and FWM efficiency.Abstract:
We perform a time-dependent analysis of four-wave mixing (FWM) in a double-$\ensuremath{\Lambda}$ system in an ultraslow-propagation regime and obtain the analytical expressions of pulsed probe laser, FWM-generated pulse, phase shifts and absorption coefficients, group velocities, and FWM efficiency. With these analytical expressions, we show that an efficiently generated FWM field can acquire the same ultraslow group velocity $({V}_{g}∕c\ensuremath{\sim}{10}^{\ensuremath{-}4}--{10}^{\ensuremath{-}5})$ and pulse shape of a probe pump and that the maximum FWM efficiency is greater than 25%, which is orders of magnitude larger than previous FWM schemes in the ultraslow-propagation regime.read more
Citations
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Switching from optical bistability to multistability via terahertz signal radiation in a InGaN/GaN quantum dot nanostructure
TL;DR: In this article, the effect of terahertz signal field on optical bistability and multistability in InGaN/GaN quantum dot nanostructure inside a unidirectional ring cavity is investigated.
Journal ArticleDOI
Optical bistability and multi-stability via voltage-controlled and the rate of incoherent pump in a quantum dot nanostructure
TL;DR: In this paper, the optical bistability and optical multi-stability in a four-level quantum dot molecule were investigated and the effect of tunnel coupling and the rate of incoherent pump on the optical binary threshold was found.
Journal ArticleDOI
Dynamics of coupled ultraslow optical solitons in a coherent four-state double-{Λ} system
TL;DR: In this paper, the dynamics of two nearly lossless and distortion-free weak nonlinear optical pulses in a cold, lifetime-broadened four-state double-Λ system via electromagnetically induced transparency were investigated.
Journal ArticleDOI
Plasmon-induced phase grating via nonlinear modulation
TL;DR: By studying the linear and nonlinear properties of four-level quantum system near plasmonic nanostructure (PS), it is realized that the diffraction efficiency of weak probe light can be controlled by plasman induced linear and nonsmooth modulation.
Journal ArticleDOI
Ultraslow temporal vector optical solitons in a cold five-state atomic medium under Raman excitation
TL;DR: In this paper, the formation of ultraslow temporal vector optical solitons in a lifetime-broadened five-state atomic system under Raman excitation was theoretically investigated by analyzing the interaction between the atomic system and two strong, linear-polarized continuous wave control fields and a weak, linear polarized pulsed signal field, having two orthogonally polarized components.
References
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Journal ArticleDOI
Giant Kerr nonlinearities obtained by electromagnetically induced transparency.
Holger Schmidt,Atac Imamoglu +1 more
TL;DR: A cross-phase modulation scheme that exhibits a giant, resonantly enhanced nonlinearity, along with vanishing linear susceptibilities, is analyzed and has possible applications in quantum nondemolition measurements and for quantum logic gates.
Journal ArticleDOI
Nonlinear Optics at Low Light Levels
TL;DR: In this article, the combination of electromagnetically induced transparency based nonlinear optics and cold atom technology, under conditions of ultra-low light propagation, allows nonlinear processes at energies of a few photons per atomic cross section.
Journal ArticleDOI
Photon Switching by Quantum Interference
TL;DR: In this article, the authors describe a four-state atomic system that absorbs two photons, but does not absorb one photon, but operates at an energy cost of one photon per switching event.