Cryogenic Multiplexing with Bottom-Up Nanowires
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866916086406971392 |
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| author | Olšteins, Dāgs Nagda, Gunjan Carrad, Damon J. Beznasiuk, Daria V. Petersen, Christian E. N. Martí-Sánchez, Sara Arbiol, Jordi Jespersen, Thomas Sand |
| author_facet | Olšteins, Dāgs Nagda, Gunjan Carrad, Damon J. Beznasiuk, Daria V. Petersen, Christian E. N. Martí-Sánchez, Sara Arbiol, Jordi Jespersen, Thomas Sand |
| contents | Bottom-up grown nanomaterials play an integral role in the development of quantum technologies. Among these, semiconductor nanowires (NWs) are widely used in proof-of-principle experiments, however, difficulties in parallel processing of conventionally-grown NWs makes scalability unfeasible. Here, we harness selective area growth (SAG) to remove this road-block. We demonstrate large scale integrated SAG NW circuits consisting of 512 channel multiplexer/demultiplexer pairs, incorporating thousands of interconnected SAG NWs operating under deep cryogenic conditions. Multiplexers enable a range of new strategies in quantum device research and scaling by increase 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 SAG quantum dots thus establishing the feasibility of applying cross-bar gating strategies for efficient scaling of future SAG quantum circuits. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2304_12765 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Cryogenic Multiplexing with Bottom-Up Nanowires Olšteins, Dāgs Nagda, Gunjan Carrad, Damon J. Beznasiuk, Daria V. Petersen, Christian E. N. Martí-Sánchez, Sara Arbiol, Jordi Jespersen, Thomas Sand Mesoscale and Nanoscale Physics Applied Physics Bottom-up grown nanomaterials play an integral role in the development of quantum technologies. Among these, semiconductor nanowires (NWs) are widely used in proof-of-principle experiments, however, difficulties in parallel processing of conventionally-grown NWs makes scalability unfeasible. Here, we harness selective area growth (SAG) to remove this road-block. We demonstrate large scale integrated SAG NW circuits consisting of 512 channel multiplexer/demultiplexer pairs, incorporating thousands of interconnected SAG NWs operating under deep cryogenic conditions. Multiplexers enable a range of new strategies in quantum device research and scaling by increase 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 SAG quantum dots thus establishing the feasibility of applying cross-bar gating strategies for efficient scaling of future SAG quantum circuits. |
| title | Cryogenic Multiplexing with Bottom-Up Nanowires |
| topic | Mesoscale and Nanoscale Physics Applied Physics |
| url | https://arxiv.org/abs/2304.12765 |