Proposal for high-fidelity quantum simulation using a hybrid dressed state

TL;DR

This paper introduces a hybrid dressed state approach that enhances quantum coherence by suppressing environmental noise, enabling more robust quantum simulation, computation, and metrology in practical systems.

Contribution

It proposes a novel hybrid dressed state method that improves noise resistance and coherence times in quantum systems, with theoretical applications demonstrated in NV centers and trapped ions.

Findings

Significantly increased coherence times under realistic noise conditions.

Enhanced flexibility in Hamiltonian engineering for quantum simulations.

Potential applications in quantum computing and metrology.

Abstract

A fundamental goal of quantum technologies concerns the exploitation of quantum coherent dynamics for the realisation of novel quantum applications such as quantum computing, quantum simulation, and quantum metrology. A key challenge on the way towards these goals remains the protection of quantum coherent dynamics from environmental noise. Here, we propose a concept of hybrid dressed state from a pair of continuously driven systems. It allows sufficiently strong driving fields to suppress the effect of environmental noise, while at the same time being insusceptible to both the amplitude and phase noise in the continuous driving fields. This combination of robust features significantly enhances coherence times under realistic conditions, and at the same time provides new flexibility in Hamiltonian engineering that otherwise is not achievable. We demonstrate theoretically applications of our scheme for noise resistant analog quantum simulation in the well studied physical systems of nitrogen-vacancy centers in diamond and of trapped ions. The scheme may also be exploited for quantum computation and quantum metrology.