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Your search keyword '"Awschalom, David D."' showing total 15 results
Start Over Author "Awschalom, David D." Journal nano letters
15 results on '"Awschalom, David D."'

2. Purcell Enhancement of Erbium Ions in TiO2 on Silicon Nanocavities

Author

Dibos, Alan M., primary, Solomon, Michael T., additional, Sullivan, Sean E., additional, Singh, Manish K., additional, Sautter, Kathryn E., additional, Horn, Connor P., additional, Grant, Gregory D., additional, Lin, Yulin, additional, Wen, Jianguo, additional, Heremans, F. Joseph, additional, Guha, Supratik, additional, and Awschalom, David D., additional

Published
2022
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5. Purcell Enhancement of Erbium Ions in TiO2on Silicon Nanocavities

Author

Dibos, Alan M., Solomon, Michael T., Sullivan, Sean E., Singh, Manish K., Sautter, Kathryn E., Horn, Connor P., Grant, Gregory D., Lin, Yulin, Wen, Jianguo, Heremans, F. Joseph, Guha, Supratik, and Awschalom, David D.

Abstract

Isolated solid-state atomic defects with telecom optical transitions are ideal quantum photon emitters and spin qubits for applications in long-distance quantum communication networks. Prototypical telecom defects, such as erbium, suffer from poor photon emission rates, requiring photonic enhancement using resonant optical cavities. Moreover, many of the traditional hosts for erbium ions are not amenable to direct incorporation with existing integrated photonics platforms, limiting scalable fabrication of qubit-based devices. Here, we present a scalable approach toward CMOS-compatible telecom qubits by using erbium-doped titanium dioxide thin films grown atop silicon-on-insulator substrates. From this heterostructure, we have fabricated one-dimensional photonic crystal cavities demonstrating quality factors in excess of 5 × 104and corresponding Purcell-enhanced optical emission rates of the erbium ensembles in excess of 200. This easily fabricated materials platform represents an important step toward realizing telecom quantum memories in a scalable qubit architecture compatible with mature silicon technologies.

Published
2022
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9. High-QNanophotonic Resonators on Diamond Membranes using Templated Atomic Layer Deposition of TiO2

Author

Butcher, Amy, Guo, Xinghan, Shreiner, Robert, Delegan, Nazar, Hao, Kai, Duda, Peter J., Awschalom, David D., Heremans, F. Joseph, and High, Alexander A.

Abstract

Integrating solid-state quantum emitters with nanophotonic resonators is essential for efficient spin-photon interfacing and optical networking applications. While diamond color centers have proven to be excellent candidates for emerging quantum technologies, their integration with optical resonators remains challenging. Conventional approaches based on etching resonators into diamond often negatively impact color center performance and offer low device yield. Here, we developed an integrated photonics platform based on templated atomic layer deposition of TiO2on diamond membranes. Our fabrication method yields high-performance nanophotonic devices while avoiding etching wavelength-scale features into diamond. Moreover, this technique generates highly reproducible optical resonances and can be iterated on individual diamond samples, a unique processing advantage. Our approach is suitable for a broad range of both wavelengths and substrates and can enable high-cooperativity interfacing between cavity photons and coherent defects in diamond or silicon carbide, rare earth ions, or other material systems.

Published
2020
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15. Purcell Enhancement of Erbium Ions in TiO 2 on Silicon Nanocavities.

Author

Dibos AM, Solomon MT, Sullivan SE, Singh MK, Sautter KE, Horn CP, Grant GD, Lin Y, Wen J, Heremans FJ, Guha S, and Awschalom DD

Abstract

Isolated solid-state atomic defects with telecom optical transitions are ideal quantum photon emitters and spin qubits for applications in long-distance quantum communication networks. Prototypical telecom defects, such as erbium, suffer from poor photon emission rates, requiring photonic enhancement using resonant optical cavities. Moreover, many of the traditional hosts for erbium ions are not amenable to direct incorporation with existing integrated photonics platforms, limiting scalable fabrication of qubit-based devices. Here, we present a scalable approach toward CMOS-compatible telecom qubits by using erbium-doped titanium dioxide thin films grown atop silicon-on-insulator substrates. From this heterostructure, we have fabricated one-dimensional photonic crystal cavities demonstrating quality factors in excess of 5 × 10 4 and corresponding Purcell-enhanced optical emission rates of the erbium ensembles in excess of 200. This easily fabricated materials platform represents an important step toward realizing telecom quantum memories in a scalable qubit architecture compatible with mature silicon technologies.

Published
2022
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