Experimental realization of noise-induced adiabaticity in nuclear magnetic resonance

TL;DR

This paper experimentally demonstrates that white noise can induce and enhance adiabaticity in nuclear magnetic resonance systems, enabling the realization of adiabatic gates and entangled states despite environmental noise.

Contribution

It provides the first experimental realization of noise-induced adiabaticity in NMR, showing how noise can be harnessed to facilitate quantum adiabatic processes.

Findings

Noise can induce adiabaticity in NMR systems.

Adiabatic Hadamard gate and entangled states were successfully demonstrated.

Noise-injected method is applicable to other quantum systems.

Abstract

The adiabatic evolution is the dynamics of an instantaneous eigenstate of a slowly varing Hamiltonian. Recently, an interesting phenomenon shows up that white noises can enhance and even induce adiabaticity, which is in contrast to previous perception that environmental noises always modify and even ruin a designed adiabatic passage. We experimentally realized a noise-induced adiabaticity in a nuclear magnetic resonance system. Adiabatic Hadamard gate and entangled state are demonstrated. The effect of noise on adiabaticity is experimentally exhibited and compared with the noise-free process. We utilized a noise-injected method, which can be applied to other quantum systems.