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

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arxiv 0905.0387 v1 pith:2RVKXLMZ submitted 2009-05-04 quant-ph

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

classification quant-ph
keywords quantumstatetransferencodingexchangequbittwo-qubitadvantage
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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