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Cryogenic Multiplexing with Bottom-Up Nanowires by Olšteins, Dāgs; Nagda, Gunjan; Carrad, Damon J.; Beznasiuk, Daria V.; Petersen, Christian E. N.; Martí-Sánchez, Sara; Arbiol, Jordi; Jespersen, Thomas Sand is a scholarly article available to read on EtoBox.

What is Cryogenic Multiplexing with Bottom-Up Nanowires about?

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.

Author

Olšteins, Dāgs; Nagda, Gunjan; Carrad, Damon J.; Beznasiuk, Daria V.; Petersen, Christian E. N.; Martí-Sánchez, Sara; Arbiol, Jordi; Jespersen, Thomas Sand

Published

2023

Language

EN