Temporal soliton excitation in an ε-near-zero plasmonic metamaterial

Argyropoulos, Christos; Chen, P. Y.; D’Aguanno, Giuseppe; Alù, Andrea

doi:10.1364/ol.39.005566

Cited by 31 publications

(21 citation statements)

References 20 publications

(27 reference statements)

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“…This is confirmed by our measured CCD images (shown in Figure 3a sequence, the transmission of the signal light began to decrease. The resonance response of nanocavity A was affected greatly by the refractive index variation of the ambient dielectric material deposited on its surface, which is confirmed by the measurements of Kuramochi et al and Leuthold et al [28,29] According to the third-order nonlinear optical Kerr effect, the effective refractive index n of the nonlinear optical material can be calculated by the relation [25,30] n = n 0 + n = n 0 + n 2 I…”

Section: Resultsmentioning

confidence: 54%

“…According to the third‐order nonlinear optical Kerr effect, the effective refractive index n of the nonlinear optical material can be calculated by the relation

n = n_{0} + Δ n = n_{0} + n_{2} I

where n 0 and n 2 are the linear and nonlinear refractive indices of the nonlinear optical material, respectively;

Δ n

is the change in the refractive index of the nonlinear material; and I is the pump intensity reaching the nonlinear optical material. According to our measurement, the monolayer‐graphene/nano‐Au:(Er 3+ :Al 2 O 3 ) cover layer had a positive effective nonlinear refractive index n 2 in the optical communication range.…”

Section: Resultsmentioning

confidence: 99%

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Ultrafast on‐Chip Remotely‐Triggered All‐Optical Switching Based on Epsilon‐Near‐Zero Nanocomposites

Chai

Wang

et al. 2017

Laser & Photonics Reviews

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On‐chip‐triggered all‐optical switching is a key component of ultrahigh‐speed and ultrawide‐band information processing chips. This switching technique, the operating states of which are triggered by a remote control light, paves the way for the realization of cascaded and complicated logic processing circuits and quantum solid chips. Here, a strategy is reported to realize on‐chip remotely‐triggered, ultralow‐power, ultrafast, and nanoscale all‐optical switching with high switching efficiency in integrated photonic circuits. It is based on control‐light induced dynamic modulation of the coupling properties of two remotely‐coupled silicon photonic crystal nanocavities, and extremely large optical nonlinearity enhancement associated with epsilon‐near‐zero multi‐component nanocomposite achieved through dispersion engineering. Compared with previous reports of on‐chip direct‐triggered all‐optical switching, the threshold control intensity, 560 kW/cm2, is reduced by four orders of magnitude, while maintaining ultrafast switching time of 15 ps. This not only provides a strategy to construct photonic materials with ultrafast and large third‐order nonlinearity, but also offers an on‐chip platform for the fundamental study of nonlinear optics.

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Section: Resultsmentioning

confidence: 54%

“…According to the third‐order nonlinear optical Kerr effect, the effective refractive index n of the nonlinear optical material can be calculated by the relation

n = n_{0} + Δ n = n_{0} + n_{2} I

where n 0 and n 2 are the linear and nonlinear refractive indices of the nonlinear optical material, respectively;

Δ n

Section: Resultsmentioning

confidence: 99%

Ultrafast on‐Chip Remotely‐Triggered All‐Optical Switching Based on Epsilon‐Near‐Zero Nanocomposites

Chai

Wang

et al. 2017

Laser & Photonics Reviews

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“…Moreover, the steady-state entangled state of the emitters placed inside the ENZ waveguide is robust enough to be observed experimentally by using second-order correlation function measurements because it persists over extended time periods and long distances. It is also demonstrated that the introduction of active (gain) media inside the plasmonic ENZ nanochannels can lead to perfect loss compensation of the inherent 28 (nonradiative) plasmonic losses that, subsequently, reduces decoherence and further boosts transient quantum entanglement. We envision that the presented passive and active ENZ mediated RET and entangled states will find applications in future quantum information and communications integrated systems on a chip [58,59], the design of new low-threshold subwavelength nanolasers [60], and the creation of ultrasensitive quantum metrology devices [61].…”

Section: Discussionmentioning

confidence: 99%

“…The proposed quantum ENZ metamaterial system can support efficient long-range resonance energy transfer (RET) and entanglement between quantum dipole emitters independent of their positions within the nanowaveguide, over extended time periods and long separation distances. It is comprised of an array of metallic waveguides that exhibit an effective ENZ response at their cutoff frequency in combination with enhanced and homogeneous electromagnetic fields inside their nanochannels [27][28][29][30][31][32]. These interesting features, combined with the strong omnidirectional resonant coupling at the ENZ frequency, are ideal conditions to boost coherent light-matter interactions along elongated regions and can increase the temporal and spatial coherence between different emitters leading to multi-qubit entanglement [33].…”

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confidence: 99%

Resonance energy transfer and quantum entanglement mediated by epsilon-near-zero and other plasmonic waveguide systems

2019

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The entanglement and resonance energy transfer between two-level quantum emitters are typically limited to sub-wavelength distances due to the inherently short-range nature of the dipole-dipole interactions. Moreover, the entanglement of quantum systems is hard to preserve for a long time period due to decoherence and dephasing mainly caused by radiative and nonradiative losses. In this work, we outperform the aforementioned limitations by presenting efficient long-range inter-emitter entanglement and large enhancement of resonance energy transfer between two optical qubits mediated by epsilon-near-zero (ENZ) and other plasmonic waveguide types, such as V-shaped grooves and cylindrical nanorods. More importantly, we explicitly demonstrate that the ENZ waveguide resonant energy transfer and entanglement performance drastically outperforms the other waveguide systems. Only the excited ENZ mode has an infinite phase velocity combined with a strong and homogeneous electric field distribution, which leads to a giant energy transfer and efficient entanglement independent to the 2 emitters' separation distances and nanoscale positions in the ENZ nanowaveguide, an advantageous feature that can potentially accommodate multi-qubit entanglement. Moreover, the transient entanglement can be further improved and become almost independent of the detrimental decoherence effect when an optically active (gain) medium is embedded inside the ENZ waveguide. We also present that efficient steady-state entanglement can be achieved by using a coherent external pumping scheme. Finally, we report a practical way to detect the steady-state entanglement by computing the second-order correlation function. The presented findings stress the importance of plasmonic ENZ waveguides in the design of the envisioned onchip quantum communication and information processing plasmonic nanodevices. IntroductionOne of the main limitations of the current quantum photonic systems is the rapid loss of spatial and temporal coherence [1,2]. For instance, Förster resonance energy transfer [3], a well-known dipole-dipole interaction between quantum emitters important to light sources, biomedical imaging, and photovoltaic applications, is limited to subwavelength ranges [4,5]. In addition, quantum entanglement [6], which is significant for a variety of emerging applications in quantum communication and computing [7], usually takes place at extremely short distances and for very short time periods, due to the decoherence associated with unavoidable coupling between the system and the surrounding environment [8].During the last years, considerable research efforts have been dedicated to significantly improve coherence based on the emerging field of quantum plasmonic metamaterials [9,10]. These artificially engineered nanostructures can serve as a novel platform to trigger, harness, and enhance coherent light-matter interactions at the nanoscale [9,11]. For instance, long-range

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“…Furthermore, the combination of the ENZ regime with nonlinearity benefits from the non‐resonant enhancement of the normal electric field component across the vacuum‐ENZ medium interface , producing intriguing effects like transmissivity directional hysteresis and enhancement of second and third harmonic generation . A different field enhancement mechanism has been identified within narrow ENZ plasmonic channels, which has been exploited to boost optical nonlinearities , to investigate temporal soliton excitation , and for the enhancement of second‐harmonic generation efficiency . Recently the existence of frozen light in ENZ media with cubic nonlinearity has been theoretically predicted .…”

Section: Introductionmentioning

confidence: 99%

Enhanced nonlinear effects in pulse propagation through epsilon‐near‐zero media

Ciattoni¹,

Rizza

Marini

et al. 2016

Laser & Photonics Reviews

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In recent years, unconventional metamaterial properties have triggered a revolution of electromagnetic research which has unveiled novel scenarios of wave-matter interaction. A very small dielectric permittivity is a leading example of such unusual features, since it produces an exotic static-like regime where the electromagnetic field is spatially slowly-varying over a physically large region. The so-called epsilon-near-zero metamaterials thus offer an ideal platform where to manipulate the inner details of the "stretched" field. Here we theoretically prove that a standard nonlinearity is able to operate such a manipulation to the point that even a thin slab produces a dramatic nonlinear pulse transformation, if the dielectric permittivity is very small within the field bandwidth. The predicted non-resonant releasing of full nonlinear coupling produced by the epsilon-near-zero condition does not resort to any field enhancement mechanisms and opens novel routes to exploiting matter nonlinearity for steering the radiation by means of ultra-compact structures.

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Temporal soliton excitation in an ε-near-zero plasmonic metamaterial

Cited by 31 publications

References 20 publications

Ultrafast on‐Chip Remotely‐Triggered All‐Optical Switching Based on Epsilon‐Near‐Zero Nanocomposites

Ultrafast on‐Chip Remotely‐Triggered All‐Optical Switching Based on Epsilon‐Near‐Zero Nanocomposites

Resonance energy transfer and quantum entanglement mediated by epsilon-near-zero and other plasmonic waveguide systems

Enhanced nonlinear effects in pulse propagation through epsilon‐near‐zero media

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