Shortcuts to adiabaticity in a fast controlled-phase gate in superconducting quantum circuits

oleh: Jia-Xin Li, F. A. Cárdenas-López, F. A. Cárdenas-López, Xi Chen, Xi Chen

Format: Article
Diterbitkan: Frontiers Media S.A. 2023-03-01

Deskripsi

Based on renewed interest in the shortcut-to-adiabaticity techniques in quantum control, we propose a reverse-engineering approach to modulate the longitudinal coupling between a pair of two-level systems with a quantized single-mode resonator. This allows us to suppress the unwanted transitions in the time-evolution operator such that the system dynamics resemble a controlled-phase gate acting in the qubit subspace at the nanosecond scale. The reduced gating time mitigates the detrimental effect produced by the loss mechanisms in all aspects. Moreover, we present a possible experimental implementation based on superconducting quantum circuits. Our work further demonstrates the versatility of the reverse-engineering method to enhance quantum protocols based on circuit quantum electrodynamic architecture.