Optical switches and modulators in deep freeze

Nature Materials, Published online: 06 July 2020; doi:10.1038/s41563-020-0739-zThe integration of silicon-based waveguides with barium titanate thin films enables the realization of efficient electro-optic switches and modulators operating at cryogenic temperatures, offering promising opportunities for quantum technologies.

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Ultrastable monodisperse polymer glass formed by physical vapour deposition

Nature Materials, Published online: 06 July 2020; doi:10.1038/s41563-020-0723-7The physical vapour deposition of ultrastable monodispersed polymer glasses is reported. This technique allows for the high tunability of glass transition temperatures of the deposited polymers, which could be useful for technological applications.

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Semimetals for high-performance photodetection

Nature Materials, Published online: 06 July 2020; doi:10.1038/s41563-020-0715-7Semimetal photodetectors provide high-speed and broadband operation but suffer from serious drawbacks such as high dark currents. This Perspective discusses the opportunities offered by topological effects to overcome these issues and improve their performance.

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Evidence of higher-order topology in multilayer WTe₂ from Josephson coupling through anisotropic hinge states

Nature Materials, Published online: 06 July 2020; doi:10.1038/s41563-020-0721-9Transport measurements and calculations show that WTe2 may be a higher-order topological insulator with topological hinge states.

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An integrated optical modulator operating at cryogenic temperatures

Nature Materials, Published online: 06 July 2020; doi:10.1038/s41563-020-0725-5The integration of barium titanate thin films with silicon-based waveguides enables the operation of efficient electro-optic switches and modulators at temperatures as low as 4 K, with potential applications in quantum computing and cryogenic computing technologies.

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An integrated optical modulator operating at cryogenic temperatures

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Semimetals for high-performance photodetection

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Evidence of higher-order topology in multilayer WTe₂ from Josephson coupling through anisotropic hinge states

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Optical switches and modulators in deep freeze

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Ultrastable monodisperse polymer glass formed by physical vapour deposition

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