Experimental implementation of leakage elimination operators
Decoherence-induced leakage errors can potentially damage physical or logical
qubits by coupling them to other system levels. Here we report the first
experimental implementation of Leakage Elimination Operators (LEOs) that aims
to reduce this undermining, and that can be applied alongside universal quantum
computing. Using IBM's cloud quantum computer, we have studied three
potentially applicable examples of subspaces in two- and three-qubit Hilbert
spaces and found that the LEOs significantly suppress leakage.
Beatriz Garcia Markaida Lian-Ao Wu