Invariants-based shortcuts for fast generating Greenberger-Horne-Zeilinger state among three superconducting qubits

• 来源期刊: 中国物理B（英文版）
• 关键词: Greenberger-Horne-Zeilinger state superconducting qubits shortcuts to adiabaticity
• 年，卷（期）: 2017,（9）
• 页码范围: 33-38
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/26/9/090301

摘要

As one of the most promising candidates for implementing quantum computers,superconducting qubits (SQs) are adopted for fast generating the Greenberger-Horne-Zeilinger (GHZ) state by using invariants-based shortcuts.Three SQs are separated and connected by two coplanar waveguide resonators (CPWRs) capacitively.The complicated system is skillfully simplified to a three-state system,and a GHZ state among three SQs is fast generated with a very high fidelity and simple driving pulses.Numerical simulations indicate the scheme is insensitive to parameter deviations.Besides,the robustness of the scheme against decoherence is discussed in detail.