Room-temperature on-chip orbital angular momentum single-photon sources

Wu, Cuo; Kumar, Shailesh; Kan, Yinhui; Komisar, Danylo; Wang, Zhiming; Bozhevolnyi, Sergey I.; Ding, Fei

doi:10.1126/sciadv.abk3075

Cited by 65 publications

(71 citation statements)

References 56 publications

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“…Note, that the resulting emission pattern (Figure 5b) consists of spatially separated RCP (Figure 5c) and LCP (Figure 5d) emission channels, representing thereby spatially separated entangled emission channels, a feature that is very important from the viewpoint of potential applications in quantum technologies. [ 24 ] For larger angles, the doughnut LCP beam shape is progressively more distorted, but the RCP beam remains well‐shaped and confined, with the emission angles being very close to the designed values (Figure S7b, Supporting Information).…”

Section: Resultsmentioning

confidence: 75%

“…For reconstruction, we employ 3D finite difference time domain (FDTD) simulations using the well-established (theoretically and experimentally) numerical framework. [23,24,27,28] First, we design metasurfaces for generating linearly polarized, along the x-axis (LPX), Gaussian beams of different radii w 0 propagating normal to the metasurface plane ( 0 k s xy = ), so that the only non-zero signal field component is the x-component:…”

Section: Resultsmentioning

confidence: 99%

“…For reconstruction, we employ 3D finite difference time domain (FDTD) simulations using the well‐established (theoretically and experimentally) numerical framework. [ 23,24,27,28 ]…”

Section: Resultsmentioning

confidence: 99%

“…Generation of purely circularly right or left polarized (RCP or LCP) photon beams is impossible with simple spiral nanoridge patterns that would always generate RCP and LCP beams carrying orbital angular momenta (topological charges) different by 2. [ 24 ] We can still use our approach targeting the generation of, for example, an RCP beam and thus using the following signal wave for calculating the interference pattern:

E_{s} = (E_{s x}; E_{s y}) \sim \exp (i k_{0} \sin θ x) \cdot (\cos θ; i)

. It is seen that for relatively large angles, such as θ = 15°, the well‐defined RCP beam and the doughnut‐shaped (vortex) LCP beam, carrying the orbital angular momentum with the topological charge of 2, are both well reconstructed ( Figure ), i.e., showing the expected intensity distribution.…”

Section: Resultsmentioning

confidence: 99%

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Molding Photon Emission with Hybrid Plasmon‐Emitter Coupled Metasurfaces

Kan

Bozhevolnyi

2022

Advanced Optical Materials

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Directional emission of photons with designed polarizations and orbital angular momenta is crucial for exploiting the full potential of quantum emitters (QEs) within quantum information technologies. Capitalizing on the concept of hybrid plasmon‐QE coupled metasurfaces, a holography‐based design approach is developed allowing one to construct surface nanostructures for outcoupling QE‐excited circularly diverging surface plasmon polaritons (SPPs) into well‐collimated beams of photons with desirable polarization characteristics propagating along given directions. Using the well‐established simulation framework, the efficiency and versatility of the developed approach are demonstrated by analyzing different hybrid SPP‐QE coupled metasurfaces designed for the generation of linearly, radially, and circularly polarized photons propagating in various off‐axis directions. This work enables the design of single‐photon sources with radiation channels that have distinct directional and polarization characteristics, extending thereby possibilities for designing complex photonic systems for quantum information processing. Moreover, it is believed that the developed scattering holography approach is generally useful when employing surface electromagnetic excitations, including SPP modes, as reference waves for signal wave reconstruction.

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Section: Resultsmentioning

confidence: 75%

Section: Resultsmentioning

confidence: 99%

“…For reconstruction, we employ 3D finite difference time domain (FDTD) simulations using the well‐established (theoretically and experimentally) numerical framework. [ 23,24,27,28 ]…”

Section: Resultsmentioning

confidence: 99%

E_{s} = (E_{s x}; E_{s y}) \sim \exp (i k_{0} \sin θ x) \cdot (\cos θ; i)

Section: Resultsmentioning

confidence: 99%

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Molding Photon Emission with Hybrid Plasmon‐Emitter Coupled Metasurfaces

Kan

Bozhevolnyi

2022

Advanced Optical Materials

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“…Moreover, for the recent progress in quantum sources and quantum information science, metasurface-integrated methods are prosperously developed and demonstrated [ 147 – 150 ]. For the metasurface-integrated quantum sources, in 2020, L. Li et al .…”

Section: Light-emitting Metasurfacementioning

confidence: 99%

Ultracompact Nanophotonics: Light Emission and Manipulation with Metasurfaces

Hong¹,

Hsu

Tsai

et al. 2022

Nanoscale Res Lett

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Internet of Things (IoT) technology is prosperous for the betterment of human well-being. With the expeditious needs of miniature functional devices and systems for adaptive optics and light manipulation at will, relevant sensing techniques are thus in the urgent stage of development. Extensive developments in ultrathin artificial structures, namely metasurfaces, are paving the way for the next-generation devices. A bunch of tunable and reconfigurable metasurfaces with diversified catalogs of mechanisms have been developed recently, enabling dynamic light modulation on demand. On the other hand, monolithic integration of metasurfaces and light-emitting sources form ultracompact meta-devices as well as exhibiting desired functionalities. Photon-matter interaction provides revolution in more compact meta-devices, manipulating light directly at the source. This study presents an outlook on this merging paradigm for ultracompact nanophotonics with metasurfaces, also known as metaphotonics. Recent advances in the field hold great promise for the novel photonic devices with light emission and manipulation in simplicity.

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Dispersion‐Enabled Symmetry Switching of Photonic Angular‐Momentum Coupling

Cai

Zhang

et al. 2023

Adv Funct Materials

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Photonic spin‐orbit interactions describe the interactions between spin angular momentum and orbital angular momentum of photons, which play essential roles in subwavelength optics. However, the influence of frequency dispersion on photonic angular‐momentum coupling is rarely studied. Here, by elaborately designing the contribution of the geometric phase and waveguide propagation phase, the dispersion‐enabled symmetry switching of photonic angular‐momentum coupling is experimentally demonstrated. This notion may induce many exotic phenomena and be found in enormous applications, such as the spin‐Hall effect, optical calculation, and wavelength division multiplexing systems. As a proof‐of‐concept demonstration, two metadevices, a multi‐channel vectorial vortex beam generator and a phase‐only hologram, are applied to experimentally display optical double convolution, which may offer additional degrees of freedom to accelerate computing and a miniaturization configuration for optical convolution without collimation operation. These results may provide a new opportunity for complex vector optical field manipulation and calculation, optical information coding, light‐matter interaction manipulation, and optical communication.

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Room-temperature on-chip orbital angular momentum single-photon sources

Abstract: A room-temperature on-chip orbital angular momentum source that emits well-collimated single photons has been demonstrated.

Cited by 65 publications

References 56 publications

Molding Photon Emission with Hybrid Plasmon‐Emitter Coupled Metasurfaces

Molding Photon Emission with Hybrid Plasmon‐Emitter Coupled Metasurfaces

Ultracompact Nanophotonics: Light Emission and Manipulation with Metasurfaces

Dispersion‐Enabled Symmetry Switching of Photonic Angular‐Momentum Coupling

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