Coupler characterization of superconducting transmons qubits for cross-resonance gate

Hanhee Paik,Srikanth Srinivasan,Sami Rosenblatt,Jose Chavez-Garcia,Daniela Bogorin,Oblesh Jinka,George Keefe, Dongbing Shao,Jeng-Bang Yau,Markus Brink,Jerry M. Chow

international electron devices meeting（2020）

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摘要

We characterize two-qubit cross-resonance gates and unintended residual coupling on various coupled qubit arrangements. Direct coupling versus coupling via a quantum bus are studied on the basis of cross-resonance gate rate and fall-off of non-nearest neighbor coupling. We experimentally extract coupling rates using Hamiltonian tomography methods, and compare with microwave simulations.

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关键词

coupler characterization,transmons qubits,two-qubit cross-resonance gates,unintended residual coupling,coupled qubit arrangements,direct coupling versus coupling,quantum bus,cross-resonance gate rate,neighbor coupling,coupling rates

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