ScQ cloud quantum computation for generating Greenberger-Horne-Zeilinger states of up to 10 qubits

Abstract

In this study, we introduce an online public quantum computation platform, named as ScQ, based on a 1D array of a 10-qubit superconducting processor. Single-qubit rotation gates can be performed on each qubit. Controlled-NOT gates between nearest-neighbor sites on the 1D array of 10 qubits are available. We show the online preparation and verification of Greenberger-Horne-Zeilinger states of up to 10 qubits through this platform for all possible blocks of qubits in the chain. The graphical user interface and quantum assembly language methods are presented to achieve the above tasks, which rely on a parameter scanning feature implemented on ScQ. The performance of this quantum computation platform, such as fidelities of logic gates and details of the superconducting device, are presented.

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• Family of Quantum Mutual Information in Multiparty Quantum Systems
• Recovery of damaged information via scrambling in indefinite casual order
• Purity-Assisted Zero-Noise Extrapolation for Quantum Error Mitigation
• To share and not share a singlet: control qubit and nonclassicality in teleportation
• Microwave-activated high-fidelity three-qubit gate scheme for fixed-frequency superconducting qubits