Multi-mode of Four and Six Wave Parametric Amplified Process

Zhu, Dayu; Yang, Yue-De; Zhang, Da; Liu, Ruizhou; Ma, Danmeng

doi:10.1038/srep43689

Cited by 8 publications

(6 citation statements)

References 38 publications

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“…As pointed out in Ref. [27], there exists a direct correspondence between this splitting (i.e., multi-mode output) and the spatial phase mismatch, which experimentally we find can be achieved by obstructing the pump in a number of ways. Also, it is worthwhile to mention that the splittings observed in Refs.…”

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confidence: 75%

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Multimode four-wave mixing with a spatially structured pump

et al. 2018

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We demonstrate, to the best of our knowledge, a new four-wave mixing geometry based on structured light. By utilizing near-field diffraction through a narrow slit, the pump beam is asymmetrically structured to modify the phase-matching condition, generating multimode output in both the spatial and frequency domains. We show that the frequency parameter enables selection of various spatial-mode outputs, including a twin-beam geometry, which preserves relative intensity squeezing shared between the two beams. The results suggest that the engineering of atomic states via structured light may provide a pathway to a diverse set of quantum resources based on multimode squeezed light.

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confidence: 75%

“…Also, it is worthwhile to mention that the splittings observed in Refs. [27,28] were obtained using a different method, and did not involved a structured pump beam. Although the amount of splitting differs among the various spots, these resonances in general correspond to different spatial-mode outputs.…”

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confidence: 99%

Multimode four-wave mixing with a spatially structured pump

et al. 2018

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“…Such AT splitting is obtained by the enhanced internal term G 2 1 e iφ . In this section, the pinhole of the pump beam is 2.4 mm and the corresponding nonlinear phase shift φ is π/8 [21]. By solving equations ( 3) and ( 4) regardless of the internal and external dressing E 4 terms, four eigenvalue values are obtained which are…”

Section: Multi-mode In Internal Dressingmentioning

confidence: 99%

Multi-dressing and optical pumping effects in nonlinear gain from parametric-amplification four-wave mixing

et al. 2018

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A higher degree of entanglement of entangled sources in quantum communications is always desired and can be achieved with high nonlinear gains. The dressing of atomic coherence and optical pumping can be considered as effective parameters to obtain such entangled sources. In this regard, we have experimentally studied doubly dressed effects in a small range of frequency, and optical pumping and de-pumping effects over a wide frequency range in multilevel atomic system in order to enhance the nonlinear gain. The multi-mode phenomenon that results from the multi-peak of Autler-Townes splitting can be observed at the large beam size of the pinhole of the pump field. Theoretical calculations fit well with the experimentally measured results. The dressing of atomic coherence and optical pumping lead to the enhancement of nonlinear gain up to 8.2 when the original nonlinear gain is 4.7.

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“…[7] A phase-sensitive amplification (PSA) achieved via a FWM process in Rb vapor has been researched by Corzo et al, which can support at least hundreds of spatial modes. [15] Our group reported the multimode research in a system coexisting of FWM and SWM with good responses to the dressing modulation [16] and analysis of multimode spatial and frequency degrees of freedom in a parametric-amplified multiwave mixing (PA-MWM) process where dressing lasers are used to modulate the phase-matching conditions and nonlinear susceptibilities. [17] Nevertheless, the study on relations between frequency and spatial multimode as well as IDS and entanglement imaging in dressing PA-SWM process has never been reported.…”

Section: Introductionmentioning

confidence: 99%

Multichannel Six‐Wave Mixing with Spatial Multimode and Squeezing via Atomic Coherence

et al. 2023

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Multimode properties, based on nonlinear parametric processes, have potential research value on entanglement imaging. This paper studies the spatial and frequency multimode from dressing parametric‐amplified six‐wave mixing (PA‐SWM) process with three entangled signals. The S1 signal contains fifth‐order nonlinearity, the S2 signal contains electromagnetically induced absorption and fifth‐order nonlinearity, and the S3 signal contains Autler–Townes splitting (AT), second‐ and fifth‐order nonlinearity. The frequency multimode is attributed to dressing energy level splitting in spontaneous SWM (SSWM) process. The spatial multimode is due to frequency multimode and beam splitting via Kerr nonlinearity. In the spatial domain, it finds the optimal conditions of intensity difference squeezing (IDS) and spatial imaging along with their competitive relationship. On the one hand, the light spots with single spatial mode are contributed to the maximum IDS but not conducive to entanglement imaging; on the other hand, the light spots with multiple spatial modes are instrumental in entanglement imaging but not appropriate for the IDS. This research has potential applications in squeezed light sources for quantum metrology, and correlated imaging of spatial signals.

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Multi-mode of Four and Six Wave Parametric Amplified Process

Cited by 8 publications

References 38 publications

Multimode four-wave mixing with a spatially structured pump

Multimode four-wave mixing with a spatially structured pump

Multi-dressing and optical pumping effects in nonlinear gain from parametric-amplification four-wave mixing

Multichannel Six‐Wave Mixing with Spatial Multimode and Squeezing via Atomic Coherence

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