Experimental Implementation of a Codeword Stabilized Quantum Code

Details Experimental Implementation of a Codeword Stabilized Quantum Code Experimental Implementation of a Codeword Stabilized Quantum Code

2011-11-23

arxiv.org/abs/1111.5445v1

Physics

Quantum Physics

Scientific paper

A five-qubit codeword stabilized quantum code is implemented in a seven-spin-qubit system using nuclear magnetic resonance (NMR). For the first time, our experiment implements a good nonadditive quantum code which encodes a larger Hilbert space than any stabilizer code with the same length and capable of correcting the same kind of errors. The robustness of the protected states is well demonstrated. Given the typical decoherence time of the system, our experiment challenges the ultimate limit of coherence control of the system and pushes the limit to implement complex quantum circuits in spin qubits forward.

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