Invited Article: All-optical multichannel logic based on coherent perfect absorption in a plasmonic metamaterial

Παπαϊωάννου, Μαρία; Plum, Eric; Valente, J.; Rogers, Edward T. F.; Zheludev, Nikolay I.

doi:10.1063/1.4966269

Cited by 59 publications

(50 citation statements)

References 36 publications

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“…Experimentally we observe the AND function with more than 3× contrast between the logical output states at a modulation frequency of 10 kHz. In principle, other logical functions including XOR and OR for intensitymodulated signals can be realized for suitable choices of θ ext [22].…”

Section: Resultsmentioning

confidence: 99%

“…[12,13], redirection of light [14,15] as well as nonlinear [16], polarization [17] and quantum [18,19] effects in films of nanoscale thickness and excitation-selective spectroscopy [20]. In particular, it has been predicted that coherent interaction of light on lossy ultrathin films could perform signal processing functions [7] and proof-of-concept experiments in the static regime have been reported [21,22]. Here we report the realization of the first fully packaged, fiberized metamaterial device based on this concept.…”

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confidence: 89%

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Fibre-optic metadevice for all-optical signal modulation based on coherent absorption

et al. 2018

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Recently, coherent control of the optical response of thin films in standing waves has attracted considerable attention, ranging from applications in excitation-selective spectroscopy and nonlinear optics to all-optical image processing. Here, we show that integration of metamaterial and optical fibre technologies allows the use of coherently controlled absorption in a fully fiberized and packaged switching metadevice. With this metadevice, which controls light with light in a nanoscale plasmonic metamaterial film on an optical fibre tip, we provide proof-of-principle demonstrations of logical functions XOR, NOT and AND that are performed within a coherent fibre network at wavelengths between 1530 and 1565 nm. The metadevice has been tested at up to 40 gigabits per second and sub-milliwatt power levels. Since coherent absorption can operate at the single-photon level and with 100 THz bandwidth, we argue that the demonstrated all-optical switch concept has potential applications in coherent and quantum information networks.

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Section: Resultsmentioning

confidence: 99%

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confidence: 89%

Fibre-optic metadevice for all-optical signal modulation based on coherent absorption

et al. 2018

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“…The signal processing opportunities presented by coherent interaction of light with light on 2D matter in a four-port device as discussed above have been investigated in detail in a theoretical study by Fang et al 75 followed by recent experimental demonstrations [76][77][78] . They include transistor-like small-signal amplification as well as logical operations NOT, XOR, XNOR on phase-modulated data and NOT, XOR, AND, OR on intensitymodulated data, promising fast and low energy information processing in novel coherent data processing architectures and locally coherent networks that are becoming part of the mainstream telecommunications agenda.…”

Section: Data and Image Processing With Coherent Metadevicesmentioning

confidence: 99%

Controlling the Optical Response of 2D Matter in Standing Waves

Plum¹,

MacDonald²,

Xu³

et al. 2017

ACS Photonics

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There is a major development in photonic technology unfolding that promises to change optical data processing paradigms, spectroscopy and nonlinear / quantum optics. This new direction has its roots in plasmonics, metamaterials and coherent optics: It has been discovered in recent years that the optical properties of thin-film media can, if the film is much thinner that the wavelength, manifest differently in travelling wave and standing wave light fields. In the latter case, 'coherent control' of the energy exchange between incident and scattered waves leads to a plethora of new technological opportunities including single photon gates, 100 THz all-optical modulators, a ground-breaking spectroscopy technique that can distinguish different multipole contributions to absorption and quantum optical devices. We provide an overview of the rapidly growing body of work on the optics of planar (ultrathin) media and metamaterials in coherent light fields.

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“…Absorption in the film is then modulated by changing the relative phase of the two beams, or equivalently by scanning the film along the nodes (peak transmittance) and antinodes (peak absorption) of the interference pattern. This approach has been demonstrated in the ultrafast [7] and quantum regime [8][9][10][11], as well as in integrated photonic systems [12][13][14][15][16]. While a resonant cavity is not required, single-pass absorption should be 50% to achieve perfect absorption [17,18].…”

Section: Introductionmentioning

confidence: 99%

Dynamical Control of Broadband Coherent Absorption in ENZ Films

et al. 2020

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Interferometric effects between two counter-propagating beams incident on an optical system can lead to a coherent modulation of the absorption of the total electromagnetic radiation with 100% efficiency even in deeply subwavelength structures. Coherent perfect absorption (CPA) rises from a resonant solution of the scattering matrix and often requires engineered optical properties. For instance, thin film CPA benefits from complex nanostructures with suitable resonance, albeit at a loss of operational bandwidth. In this work, we theoretically and experimentally demonstrate a broadband CPA based on light-with-light modulation in epsilon-near-zero (ENZ) subwavelength films. We show that unpatterned ENZ films with different thicknesses exhibit broadband CPA with a near-unity maximum value located at the ENZ wavelength. By using Kerr optical nonlinearities, we dynamically tune the visibility and peak wavelength of the total energy modulation. Our results based on homogeneous thick ENZ media open a route towards on-chip devices that require efficient light absorption and dynamical tunability.

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Invited Article: All-optical multichannel logic based on coherent perfect absorption in a plasmonic metamaterial

Cited by 59 publications

References 36 publications

Fibre-optic metadevice for all-optical signal modulation based on coherent absorption

Fibre-optic metadevice for all-optical signal modulation based on coherent absorption

Controlling the Optical Response of 2D Matter in Standing Waves

Dynamical Control of Broadband Coherent Absorption in ENZ Films

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