The physics of optical computing

Nature Reviews Physics, Journal Year: 2023, Volume and Issue: 5(12), P. 717 - 734

Published: Oct. 9, 2023

Language: Английский

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Cavity-enhanced single artificial atoms in silicon

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: June 21, 2024

Artificial atoms in solids are leading candidates for quantum networks, scalable computing, and sensing, as they combine long-lived spins with mobile photonic qubits. Recently, silicon has emerged a promising host material where artificial long spin coherence times emission into the telecommunications band can be controllably fabricated. This field leverages maturity of photonics to embed world's most advanced microelectronics platform. However, current bottleneck is naturally weak rate these atoms, which addressed by coupling an optical cavity. Here, we demonstrate cavity-enhanced single (G-centers) at telecommunication wavelengths. Our results show enhancement their zero phonon line intensities along highly pure single-photon emission, while lifetime remains statistically unchanged. We suggest possibility two different existing types G-centers, shedding new light on properties emitters.

Language: Английский

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Optical single-shot readout of spin qubits in silicon

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

Abstract Small registers of spin qubits in silicon can exhibit hour-long coherence times and exceeded error-correction thresholds. However, their connection to larger quantum processors is an outstanding challenge. To this end, with optical interfaces offer key advantages: they minimize the heat load give access modular computing architectures that eliminate cross-talk a large connectivity. Here, we implement such efficient spin-photon interface based on erbium dopants nanophotonic resonator. We demonstrate single-shot readout whose exceeds Purcell-enhanced lifetime, paving way for entangling remote spins via photon interference. As emit coherent photons minimal-loss band fibers, tens be spectrally multiplexed each resonator, demonstrated hardware platform offers unique promise distributed information processing scalable, integrated devices.

Language: Английский

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Single-shot optical neural network

Science Advances, Journal Year: 2023, Volume and Issue: 9(25)

Published: June 21, 2023

Analog optical and electronic hardware has emerged as a promising alternative to digital electronics improve the efficiency of deep neural networks (DNNs). However, previous work been limited in scalability (input vector length

Language: Английский

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Cost-Effective and Environmentally Friendly Mass Manufacturing of Optical Metasurfaces Towards Practical Applications and Commercialization

International Journal of Precision Engineering and Manufacturing-Green Technology, Journal Year: 2023, Volume and Issue: 11(2), P. 685 - 706

Published: Nov. 28, 2023

Abstract Optical metasurfaces consisting of two-dimensional nanostructures have rapidly developed over the past two decades thanks to their potential for use as optical components, such metalenses or metaholograms, with ultra-compact form factors. Despite these rapid developments, major challenges commercialization still remain: namely mass production and in real-life devices. A lot effort has been made overcome limitations electron beam lithography which is commonly used fabricate metasurfaces. However, a breakthrough required bring cost down into price range conventional optics. This review covers deep-ultraviolet lithography, nanoimprint self-assembly-based fabrication processes that both cost-effective environmentally friendly We then discuss future displays/sensors are expected take advantage mass-produced The applications will open new realm practical commercialization.

Language: Английский

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Generating free-space structured light with programmable integrated photonics

Nature Photonics, Journal Year: 2024, Volume and Issue: 18(3), P. 243 - 249

Published: Jan. 12, 2024

Language: Английский

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Spatiotemporal sculpturing of light: a tutorial

Advances in Optics and Photonics, Journal Year: 2024, Volume and Issue: 16(2), P. 163 - 163

Published: March 18, 2024

Spatiotemporal sculpturing of light pulses with sophisticated structures on demand is one major goal the everlasting pursuit ultrafast information transmission and processing as well ultraintense energy concentration extraction using light. It may hold key to unlocking new extraordinary fundamental physical effects. Traditionally, spatiotemporal are treated spatiotemporally separable wave packets a solution Maxwell’s equations. In past decade, more generalized forms nonseparable started emerge growing importance for their striking This tutorial intends provide necessary basics how sculpture in domain realize highlight some recent advances creation characterization increasingly complex packets. These states diverse geometric topological exhibit unique properties during propagation, focusing, interaction matter. The broad potential applications outlook future trends open challenges this field presented.

Language: Английский

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Tunable quantum emitters on large-scale foundry silicon photonics

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 10, 2024

Abstract Controlling large-scale many-body quantum systems at the level of single photons and atomic is a central goal in information science technology. Intensive research development has propelled foundry-based silicon-on-insulator photonic integrated circuits to leading platform for optical control with individual mode programmability. However, integrating single-emitter tunability remains an open challenge. Here, we overcome this barrier through hybrid integration multiple InAs/InP microchiplets containing high-brightness infrared semiconductor dot photon emitters into advanced fabricated 300 mm foundry process. With platform, achieve single-photon emission via resonance fluorescence scalable wavelength tunability. The combined opens door programmable processors manufactured foundries.

Language: Английский

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Threading light through dynamic complex media

Nature Photonics, Journal Year: 2025, Volume and Issue: 19(4), P. 434 - 440

Published: March 14, 2025

Abstract The dynamic scattering of light impacts sensing and communication technologies throughout the electromagnetic spectrum. Here we introduce a new way to control propagation through time-varying complex media. Our strategy is based on observation that in many systems, some parts medium will change configuration more slowly than others. We experimentally demonstrate suite techniques identify guide temporally stable channels within media—threading optical fields around multiple highly pockets hidden at unknown locations inside. first show how temporal fluctuations scattered can be suppressed by optimizing wavefront incident field. Next, accelerate this procedure two orders magnitude using physically realized form adjoint gradient descent optimization. Finally, time-averaged transmission matrix reveals basis fluctuation eigenchannels used increase stability beam shaping media such as bending multimode fibres. work has potential future applications variety reliant general wave phenomena subject conditions, from optics microwaves acoustics.

Language: Английский

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Programmable photonic unitary circuits for light computing

Nanophotonics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Abstract Unitarity serves as a fundamental concept for characterizing linear and conservative wave phenomena in both classical quantum systems. Developing platforms that perform unitary operations on light waves universal programmable manner enables the emulation of complex light–matter interactions execution general-purpose functionalities manipulations, photonic computing, circuits. Recently, numerous approaches to implementing circuits have been proposed demonstrated, each employing different design strategies distinctly impact overall device performance. Here, we review foundational principles recent achievements implementation circuits, with particular focus integrated platforms. We classify based dimensionality nontrivial unit their building blocks: lower-dimensional units, such SU(2) operations, higher-dimensional ones, Fourier transforms. In category, efforts leverage alternative physical axes, temporal frequency domains, address scalability challenges are also reviewed. discuss underlying concepts, procedures, trade-offs strategy, especially relation light-based computing.

Language: Английский

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