Experimental repetitive quantum error correction |
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Authors: | Schindler Philipp Barreiro Julio T Monz Thomas Nebendahl Volckmar Nigg Daniel Chwalla Michael Hennrich Markus Blatt Rainer |
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Affiliation: | Institut für Experimentalphysik, Universit?t Innsbruck, Technikerstra?e 25, A-6020 Innsbruck, Austria. |
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Abstract: | The computational potential of a quantum processor can only be unleashed if errors during a quantum computation can be controlled and corrected for. Quantum error correction works if imperfections of quantum gate operations and measurements are below a certain threshold and corrections can be applied repeatedly. We implement multiple quantum error correction cycles for phase-flip errors on qubits encoded with trapped ions. Errors are corrected by a quantum-feedback algorithm using high-fidelity gate operations and a reset technique for the auxiliary qubits. Up to three consecutive correction cycles are realized, and the behavior of the algorithm for different noise environments is analyzed. |
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