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arXiv · 1211.0491

Demonstrating a Driven Reset Protocol of a Superconducting Qubit

K. Geerlings·Z. Leghtas·I. M. Pop·S. Shankar·L. Frunzio·R. J. Schoelkopf·M. Mirrahimi·M. H. Devoret
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Abstract

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 certain 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 microseconds; faster times and higher fidelity are predicted upon parameter optimization.

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K. Geerlings, Z. Leghtas, I. M. Pop, S. Shankar, L. Frunzio, R. J. Schoelkopf, M. Mirrahimi, M. H. Devoret. 2012-11-02. Demonstrating a Driven Reset Protocol of a Superconducting Qubit. https://doi.org/10.1103/physrevlett.110.120501

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