Journal article

Demonstration of a silicon-based quantum cellular automata cell

M Mitic, MC Cassidy, KD Petersson, RP Starrett, E Gauja, R Brenner, RG Clark, AS Dzurak, C Yang, DN Jamieson

APPLIED PHYSICS LETTERS | AMER INST PHYSICS | Published : 2006

Abstract

We report on the demonstration of a silicon-based quantum cellular automata (QCA) unit cell incorporating two pairs of metallically doped (n +) phosphorus-implanted nanoscale dots, separated from source and drain reservoirs by nominally undoped tunnel barriers. Metallic cell control gates, together with Al-AlO x single electron transistors for noninvasive cell-state readout, are located on the device surface and capacitively coupled to the buried QCA cell. Operation at subkelvin temperatures was demonstrated by switching of a single electron between output dots, induced by a driven single electron transfer in the input dots. The stability limits of the QCA cell operation were also determined..

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University of Melbourne Researchers