Classical-Noise-Free Measurement by High-Order Quantum Correlations  

作　　者：Xinyu Pan 潘新宇(Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Physics Letters》2021年第2期1-1,共1页中国物理快报（英文版）

摘　　要：One main challenge for realistic quantum computing and quantum sensing is to combat noise.Three formal strategies including quantum error correction,[1,2]decoherence-free subspace[3,4]and dynamical decoupling[5]have been developed for suppressing the noise.Quantum systems can lose their coherence when subjected to fluctuations of the local fields from their surrounding environments.Such decoherence phenomena are a fundamental effect in quantum physics and sometimes are referred to as a back-action from the measured system.As one typical dynamical decoupling technique,spin echo originated from magnetic resonance spectroscopy can average out the noise by flipping the target qubit.

关 键 词：QUANTUM DYNAMICAL CORRECTION 

分 类 号：O413[理学—理论物理]