Light beams with volume superoscillations

Zacharias, Thomas; Bahabad, Alon

doi:10.1364/ol.394270

Cited by 8 publications

(4 citation statements)

References 24 publications

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“…Such focusing is useful for applications such as microscopy [1,2,3] and optical tweezers [4,5]. Recently deep 3D subwavelength focusing was achieved with making use of superoscillating superposition of Bessel beams [6]. In the present work we will demonstrate the possibility to create a subwavelength hot spot using spatial Fano resonances excited in dielectric sphere by axially symmetric Bessel beam [7].…”

Section: Introductionmentioning

confidence: 85%

Spatial Fano resonance of a dielectric microsphere impinged by a Bessel beam

Klimov,

Heydarian,

Simovski

2020

Preprint

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Using a recently found solution for a Bessel wave beam impinging a sphere, practically suitable for optically large dielectric spheres, we analyze the electromagnetic fields near a substantial sphere for different sphere sizes and permittivity. We theoretically reveal a Fano resonance when a resonant mode of the sphere interferes with an amount of all other modes. This resonance results in a giant amplification of the longitudinal electric field component in a substantial area noticeably shifted to free space behind the microsphere. We prove that this spatial Fano resonance is a near-field effect, though the maximum can be distanced up to λ / 2 from the sphere and its effective length can be close to λ.

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Section: Introductionmentioning

confidence: 85%

Spatial Fano resonance of a dielectric microsphere impinged by a Bessel beam

Klimov,

Heydarian,

Simovski

2020

Preprint

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“…In the RSP protocols consisting of relay nodes, it should be noted that the photonic qubits are an excellent substrate for achieving long-distance communication compared with light beams [59][60][61][62], trapped atoms [63][64],…”

Section: Introductionmentioning

confidence: 99%

Effect of Quantum Noise on Deterministic Remote Preparation of an Arbitrary Two-Qubit State With a Relay Node

Qian

Xue

et al. 2021

IEEE Access

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We propose a scheme for deterministic remote preparation of an arbitrary two-qubit state via a relay node.Afterwards, we investigate how the scheme is influenced by the noise type, the initial state to be remotely prepared, and the decoherence rate. We find that the fidelity is symmetrical with the line () in bit-flip and phase-flip channels.In addition, the fidelity decreases with the increase of decoherence rate in the amplitude-damping and phase-damping channels. We also compare it with other RSP schemes. Since only Bell pairs work as the quantum channels, it makes our RSP scheme more available and feasible.

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“…Later on, Berry and Popescu further developed the theory of superoscillations and proposed to use this phenomenon in optics to achieve super‐resolution without using evanescent waves. [ 20 ] Following their proposal, there has been a plethora of theoretical and experimental works that use superoscillations in optics to achieve spatial sub‐Fourier focusing, [ 21,22 ] high resolution microscopy, [ 23 ] narrow‐band frequency conversion, [ 24 ] optical and electron beam shaping, [ 25,26 ] nano‐focusing, [ 27 ] and particle trapping, [ 28 ] as well as the observation of plasmonic‐like phenomenon in free space. [ 29 ] The complementary phenomenon for superoscillations, termed suboscillations, where a lower bound limited signal locally oscillates slower than its slowest Fourier component was discovered recently and has found various applications in optics.…”

Section: Introductionmentioning

confidence: 99%

Slow and Fast Light through Weak Measurements of Spectral Superoscillations

Zacharias

Hareli

Bahabad

2021

Laser & Photonics Reviews

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Slow and fast light are light pulses moving at group velocities slower or faster than the speed of light in vacuum. Current methods to achieve slow and fast light are based on strong dispersion attainable in resonant systems. By defining slow and fast light based on the arrival of the expectation value of the pulse in time, an alternative route for achieving slow and fast light is experimentally demonstrated where no dispersion engineering is needed and thus can be applicable to any medium and system where light is propagating. The method is based on the phenomenon of superoscillations and entails a weak measurement of the arrival time of a light pulse. The findings can be useful for applications in telecommunication, interferometry, and laser radars.

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Light beams with volume superoscillations

Cited by 8 publications

References 24 publications

Spatial Fano resonance of a dielectric microsphere impinged by a Bessel beam

Spatial Fano resonance of a dielectric microsphere impinged by a Bessel beam

Effect of Quantum Noise on Deterministic Remote Preparation of an Arbitrary Two-Qubit State With a Relay Node

Slow and Fast Light through Weak Measurements of Spectral Superoscillations

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