Realization of Al FinFET single electron turnstile co-integrated with a close proximity electrometer SET


Alkhalil, Feras, Perez-Barraza, J.I., Husain, M.K. , Lin, Y.P., Lambert, N., Chong, H.M.H. , Tsuchiya, Y., Williams, D.A. , Ferguson, A.J. and Mizuta, H. (2012) Realization of Al FinFET single electron turnstile co-integrated with a close proximity electrometer SET. In, 38th International Conference on Micro and Nano Engineering (MNE 2012), Toulouse, FR, 16 - 20 Sep 2012.

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Description/Abstract

In the past few years, spin qubits in Si quantum dots (QDs) have demonstrated great potential to fulfill the Loss DiVincenzo quantum computing criteria [1]. Although good controllability of single electron spins has been demonstrated for QDs defined on the two-dimensional electron gas (2DEG) formed at the GaAs/AlGaAs heterojunction by using top-down lithography [2], the coherence of electron spins deteriorates rapidly in GaAs due to rich nuclear spins in GaAs. Electron spins confined in silicon based QDs are expected to have longer coherence time thanks to the low nuclear spin density of silicon based materials, with coherence times as long as 6 seconds recently been demonstrated [3]. This has further asserted the advantage of using Si as a platform to realize spin qubits and several Si QD structures have been investigated in silicon on insulator (SOI) [4], [5] and Si (2DEG) [6]. In previous work, we have presented the design and simulation of a novel SOI-based spin qubit platform using Al FinFET gates and Si side gates. The simulations demonstrated the ability of this platform to transfer, confine and detect single electrons [7], [8]. In this letter, we report a novel fabrication process to realize high density silicon based QDs with close proximity Al and Si gates on ultrathin SOI for spin qubit applications.

Item Type: Conference or Workshop Item (Paper)
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Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > NANO
ePrint ID: 343126
Date Deposited: 23 Sep 2012 12:24
Last Modified: 14 Apr 2014 11:46
Research Funder: EPSRC
Projects:
Silicon-based Integrated Single-Spin Quantum Information Technology
Funded by: EPSRC (EP/H016872/1)
Led by: HIROSHI MIZUTA
4 May 2010 to 30 November 2013
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/343126

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