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Quantum error correction in globally controlled arrays
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Quantum error correction in globally controlled arrays
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An interesting concept in quantum computation is that of global control (GC), where there is no need to manipulate qubits individually. One can implement a universal set of quantum gates on a one-dimensional array purely via signals that target the entire structure indiscriminately. But large-scale quantum computation imposes several requirements in terms of noise level, time, space (scaling) and in particular parallelism. Keeping in mind these requirements, we prove GC can support error-correction, by implementing two simple codes. This opens the way to fault-tolerant computation with this type of architecture.
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Cited by 1 Pith paper
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Mitigating quantum decoherence via global optimal control
GRAPE-optimized global drives compress Hadamard sequences from ~3000 ns to ~320 ns and raise fidelity under strong relaxation from ~0.64 to ~0.96 in a 15-qubit globally driven ladder.
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