Efficient Universal Leakage Elimination for Physical and Encoded Qubits
L. -A. Wu, M. S. Byrd, D. A. Lidar
Abstract
Decoherence-induced leakage errors can couple a physical or encoded qubit to other levels, thus potentially damaging the qubit. They can therefore be very detrimental in quantum computation and require special attention. Here we present a general method for removing such errors by using simple decoupling and recoupling pulse sequences. The proposed gates are experimentally accessible in a variety of promising quantum computing proposals.
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