Active solid-state devices (e.g. – transistors – solid-state diode – Thin active physical layer which is – Heterojunction
Reexamination Certificate
2008-05-28
2009-10-06
Pert, Evan (Department: 2826)
Active solid-state devices (e.g., transistors, solid-state diode
Thin active physical layer which is
Heterojunction
C257S037000, C257S039000, C257SE27005, C257SE43002, C338S03200R, C977S774000
Reexamination Certificate
active
07598514
ABSTRACT:
A quantum computer can only function stably if it can execute gates with extreme accuracy. “Topological protection” is a road to such accuracies. Quasi-particle interferometry is a tool for constructing topologically protected gates. Assuming the corrections of the Moore-Read Model for ν=5/2's FQHE (Nucl. Phys. B 360, 362 (1991)) we show how to manipulate the collective state of two e/4-charge anti-dots in order to switch said collective state from one carrying trivial SU(2) charge, |1>, to one carrying a fermionic SU(2) charge |ε>. This is a NOT gate on the {|1>, |ε>} qubit and is effected by braiding of an electrically charged quasi particle σ which carries an additional SU(2)-charge. Read-out is accomplished by σ-particle interferometry.
REFERENCES:
patent: 7394092 (2008-07-01), Freedman et al.
patent: 2002/0199108 (2002-12-01), Chuang et al.
Freedman, M.H. et al., “A Modular Functor which is Universal for Quantum Computation”,Commun. Math Phys., 2002, 227, 605-622.
Goldman, V.J. et al., “Resonant Tunneling in the Quantum Hall Regime: Measurement of Fractional Charge”,Science, 1995, 267, 1010-1012.
Greiter, M. et al., “Paired Hall State at Half Filling”,Physical review Letters, 1991, 66(24), 3205-3208.
Moore, G. et al., “Nonabelions in the Fractional Quantum Hall Effect”,Nuclear Physics, 1991, B360, 362-396.
Nayak, C. et al., “2n-Quasihole States Realize 2n-1-Dimensional Spinor Braiding Statistics in Paired Quantum Hall States”,Nuclear Physics, 1996, B479, 529-553.
Das Sarma, et al., “Topologically-Protected Qubits from a Possible Non-Abelian fractional Quantum Hall State”, Dec. 22, 2004, http://arXiv.org/abs/cond-mat/0412343.
Stormer, Nobel Lecture: the Fractional Quantum Hall Effect, Jul. 1999,Reviews of Modern Physics, 71(4), 875.
Day, Devices based on the Fractional Quantum Hall Effect may Fulfill the Promise of Quantum Copying,Physics Today, Oct. 2005.
Das Sarma Sankar
Freedman Michael H.
Nayak Chetan V.
Microsoft Corporation
Pert Evan
Wilson Scott R
Woodcock & Washburn LLP
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