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One-Qubit and Two-Qubit Codes in Noisy State Transfer

Marcin Markiewicz

Institute of Theoretical Physics and Astrophysics, University of Gdańsk, PL–80–952 Gdańsk, Poland

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and

Marcin Wieśniak

Institute of Theoretical Physics and Astrophysics, University of Gdańsk, PL–80–952 Gdańsk, Poland

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https://doi.org/10.1142/S1230161210000096Cited by:1 (Source: Crossref)

Abstract

Quantum state transfer is a procedure, which allows to exchange quantum information between stationary qubit systems. It is anticipated that the transfer will find applications in solid-state quantum computing. In this contribution, we discuss the effects of various, physically relevant models of decoherence on a toy model of six qubit linearly coupled by the exchange interaction. In many cases we observe the advantage of the two-qubit encoding, which can be associated with the fact that this encoding does not require the state initialization.

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