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

• Main Authors: Cai, Jianming, Cohen, Itsik, Retzker, Alex, Plenio, Martin B
• Format: Journal Article
• Language: English
• Published: 26-10-2015
• Subjects: Physics - Quantum Physics
• DOI: 10.48550/arxiv.1510.07435

Phys. Rev. Lett. 115, 160504 (2015) 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.