Artikel,

Demonstrating a Driven Reset Protocol for a Superconducting Qubit

, , , , , , , und .
Physical Review Letters, 110 (12): 120501+ (März 2013)
DOI: 10.1103/physrevlett.110.120501

Zusammenfassung

Qubit reset is crucial at the start of and during quantum information algorithms. We present the experimental demonstration of a practical method to force qubits into their ground state, based on driving appropriate qubit and cavity transitions. Our protocol, called the double drive reset of population, is tested on a superconducting transmon qubit in a three-dimensional cavity. Using a new method for measuring population, we show that we can prepare the ground state with a fidelity of at least 99.5\% in less than 3  μs; faster times and higher fidelity are predicted upon parameter optimization.

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