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| Pàgina inicial > Articles > Articles publicats > Cryogenic multiplexing using selective area grown nanowires |
(University of Copenhagen) (University of Copenhagen) (Technical University of Denmark. Department of Energy Conversion and Storage) (Technical University of Denmark. Department of Energy Conversion and Storage) (Technical University of Denmark. Department of Energy Conversion and Storage) (Institut Català de Nanociència i Nanotecnologia) (Institut Català de Nanociència i Nanotecnologia) (Technical University of Denmark. Department of Energy Conversion and Storage)
| Data: | 2023 |
| Resum: | Bottom-up grown nanomaterials play an integral role in the development of quantum technologies but are often challenging to characterise on large scales. Here, we harness selective area growth of semiconductor nanowires to demonstrate large-scale integrated circuits and characterisation of large numbers of quantum devices. The circuit consisted of 512 quantum devices embedded within multiplexer/demultiplexer pairs, incorporating thousands of interconnected selective area growth nanowires operating under deep cryogenic conditions. Multiplexers enable a range of new strategies in quantum device research and scaling by increasing the device count while limiting the number of connections between room-temperature control electronics and the cryogenic samples. As an example of this potential we perform a statistical characterization of large arrays of identical quantum dots thus establishing the feasibility of applying cross-bar gating strategies for efficient scaling of future selective area growth quantum circuits. More broadly, the ability to systematically characterise large numbers of devices provides new levels of statistical certainty to materials/device development. |
| Ajuts: | European Commission 716655 European Commission 866158 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00457 Agencia Estatal de Investigación CEX2021-001214-S |
| Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.  |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Publicat a: | Nature communications, Vol. 14 (November 2023) , p. 7738, ISSN 2041-1723 |
