منابع مشابه
Qubit Metrology of Ultralow Phase Noise Using Randomized Benchmarking
P. J. J. O’Malley, J. Kelly, R. Barends, B. Campbell, Y. Chen, Z. Chen, B. Chiaro, A. Dunsworth, A. G. Fowler, I.-C. Hoi, E. Jeffrey, A. Megrant, J. Mutus, C. Neill, C. Quintana, P. Roushan, D. Sank, A. Vainsencher, J. Wenner, T. C. White, A. N. Korotkov, A. N. Cleland, and John M. Martinis Department of Physics, University of California, Santa Barbara, California 93106, USA Centre for Quantum ...
متن کاملRandomized benchmarking and process tomography for gate errors in a solid-state qubit.
We present measurements of single-qubit gate errors for a superconducting qubit. Results from quantum process tomography and randomized benchmarking are compared with gate errors obtained from a double pi pulse experiment. Randomized benchmarking reveals a minimum average gate error of 1.1+/-0.3% and a simple exponential dependence of fidelity on the number of gates. It shows that the limits on...
متن کاملPrecision Control and Randomized Benchmarking of a 12-us Class Superconducting Qubit
This work addresses the randomized benchmarking (RBM) of a long-lived superconducting flux qubit (T1 = 12 us, T2E = 23 us). Our aim is to use this long-lived qubit to develop the precision calibration and control capabilities necessary to measure a RBM fidelity at the 99.9% level. During this reporting period, we have developed a calibration technique that images the envelope of the control pul...
متن کاملRandomized benchmarking of single-qubit gates in a 2D array of neutral-atom qubits.
We characterize single-qubit Clifford gate operations with randomized benchmarking in a 2D array of neutral-atom qubits and demonstrate global and site selected gates with high fidelity. An average fidelity of F2=0.9983(14) is measured for global microwave-driven gates applied to a 49-qubit array. Single-site gates are implemented with a focused laser beam to Stark shift the microwaves into res...
متن کاملThree-qubit groverian measure
Abstract The Groverian measures are analytically computed in various types of three-qubit states. The final results are also expressed in terms of local-unitary invariant quantities in each type. This fact reflects the manifest local-unitary invariance of the Groverian measure. It is also shown that the analytical expressions for various types have correct limits to other types. For some types ...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2019
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.122.200502