No 1, Vol. 4, 2001 
 

Quantum Computing in Semiconductor Structures with 0.1 ìm separation of nuclear-spin qubits

Dima Mozyrsky and Vladimir Privman*

Department of Physics and Center for Advanced Materials Processing
Clarkson University, Potsdam, NY 13699-5820, USA
*Corresponding author: phone (315) 268-3891, fax (315) 268-6610,
e-mail:privman@clarkson.edu

Abstract

Nuclear-spin qubit interactions in a heterostructure can be mediated via the bound outer electrons of impurity atoms whose nuclear spins 1/2 are the qubits. These outer electrons, in turn, interact via the two-dimensional electron gas in the quantum Hall effect regime. We devised a quantum computing scheme, based on this mechanism, with qubit separation of order 0.1 ìm, attainable with the present-day semiconductor device technologies, and retaining all the gate-control and measurement aspects of earlier nuclear-spin quantum computing proposals.

full paper (pdf, 16 Kb)