Title

Fault-Tolerant Quantum Computing With Coded Spins Using The Conditional Faraday Rotation In Quantum Dots

Abstract

We propose a scalable fault-tolerant scheme for deterministic quantum computing with spins that is based on a three-particle entanglement produced by the conditional Faraday rotation of the polarization of single photons due to the nonresonant interaction with spins of quantum dots, embedded in microcavities inside a photonic crystal. The resulting conditional phase gate yields switching times of 50 ps. We show that it acts fault-tolerantly not only on the Calderbank-Shor-Steane quantum error correction codes, but also on Shor's code in a single shot. Single-qubit operations on Shor's logical qubits can be implemented by means of the optical Stark effect combined with the optical Ruderman-Kittel-Kasuya-Yosida interaction in a single shot. © 2006 The American Physical Society.

Publication Date

2-27-2006

Publication Title

Physical Review B - Condensed Matter and Materials Physics

Volume

73

Issue

7

Number of Pages

-

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1103/PhysRevB.73.075312

Socpus ID

33144485463 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33144485463

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