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High-fidelity software-defined quantum logic on a superconducting qudit
Physical Review Letters ( IF 8.385 ) Pub Date : 
Xian Wu; S. L. Tomarken; N. Anders Petersson; L. A. Martinez; Yaniv J. Rosen; Jonathan L. DuBois

We present an efficient approach to achieving arbitrary, high-fidelity control of a multi-level quantum system using optimal control techniques. As an demonstration, we implement a continuous, software-defined microwave pulse to realize a 02 SWAP gate that achieves an average gate fidelity of $\SI{99.4}{\percent}$. We describe our procedure for extracting the system Hamiltonian, calibrating the quantum and classical hardware chain, and evaluating the gate fidelity. Our work represents an alternative, fully generalizable route towards achieving universal quantum control by leveraging optimal control techniques.
更新日期:2020-09-15

 

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