Effective Rabi dynamics of Rydberg atoms and robust high-fidelity quantum gates with a resonant amplitude-modulation field

Abstract

With a resonant amplitude-modulation field on two Rydberg atoms, we propose a Rydberg antiblockade (RAB) regime, where the Rabi oscillation between collective ground and excited states is induced. A controlled-Z gate can be yielded through a Rabi cycle. Further, several common issues of the RAB gates are solved by modifying the parameter relation. The gate fidelity and the gate robustness against the control error are enhanced with a shaped pulse. The requirement of control precision of the Rydberg-Rydberg interaction strength is relaxed. In addition, the atomic excitation is restrained and therefore the gate robustness against the atomic decay is enhanced.

Published in Optics Letters

References in corpus (5)

• Effective Hamiltonian Theory and Its Applications in Quantum Information
• Quasiclassical calculations of BBR-induced depopulation rates and effective lifetimes of Rydberg nS, nP and nD alkali-metal atoms with n < 80
• Consequences of Zeeman Degeneracy for van der Waals Blockade between Rydberg Atoms
• Dissipation-based entanglement via quantum Zeno dynamics and Rydberg antiblockade
• Entanglement of neutral-atom chains by spin-exchange Rydberg interaction

Cited by in corpus (7)

• Quantum logic and entanglement by neutral Rydberg atoms: methods and fidelity
• Resilient quantum gates on periodically driven Rydberg atoms
• Unselective ground-state blockade of Rydberg atoms for implementing quantum gates
• One-step implementation of Toffoli gate for neutral atoms based on unconventional Rydberg pumping
• High-fidelity and robust controlled-Z gates implemented with Rydberg atoms via echoing rapid adiabatic passage
• Quantum Metrology via Floquet-Engineered Two-axis Twisting and Turn Dynamics
• Rapid Preparation of Rydberg Superatom W State Using Superadiabatic Techniques