CUED Publications database

Hybrid superconducting-semiconducting quantum circuits

Delfanazari, K and Ma, P and Puddy, R and Yi, T and Cao, M and Gul, Y and Farrer, I and Ritchie, D and Joyce, H and Kelly, M and Smith, C (2018) Hybrid superconducting-semiconducting quantum circuits. In: The IOP 2nd Conference in Condensed Matter Physics, 2018-1-11 to 2018-1-12, Bristol, UK..

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The hybrid superconductor-semiconductor-superconductor (S-Sm-S) structures have been proposed to be the building blocks of the next generation of topological quantum computers [1]. However, there still is a fundamental technological problem in the (i) fabrication of highly transparent interfaces between superconductors and semiconductors and (ii) scaling the number of junctions up in a single chip to realize a topological quantum device applicable for quantum technology. Here, we experimentally demonstrate an on-chip hybrid S-Sm circuit consisting of eight NbIn0.75Ga0.25As quantum wells-Nb ballistic Josephson junctions [2]. The induced hard superconducting gap in an In0.75Ga0.25As quantum well will be presented and the results of nonlinear conductance as a function of temperature and the magnetic field will be discussed. [1] V. Mourik, et al., Science 336, 1003–1007 (2012). [2] K. Delfanazari, et al., Adv. Mater. 1701836 (2017).

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions: Div B > Solid State Electronics and Nanoscale Science
Div A > Energy
Depositing User: Cron Job
Date Deposited: 02 Mar 2018 20:14
Last Modified: 17 Nov 2020 08:36