Demonstrating quantum speed-up in a superconducting two-qubit processor

Details Demonstrating quantum speed-up in a superconducting two-qubit processor Demonstrating quantum speed-up in a superconducting two-qubit processor

2011-10-24

arxiv.org/abs/1110.5170v1

Physics

Quantum Physics

6 pages, 4 figures, 1 table

Scientific paper

We operate a superconducting quantum processor consisting of two tunable transmon qubits coupled by a swapping interaction, and equipped with non destructive single-shot readout of the two qubits. With this processor, we run the Grover search algorithm among four objects and find that the correct answer is retrieved after a single run with a success probability between 0.52 and 0.67, significantly larger than the 0.25 achieved with a classical algorithm. This constitutes a proof-of-concept for the quantum speed-up of electrical quantum processors.

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