论文标题
量子增强的多参数估计和压缩感应
Quantum-enhanced multiparameter estimation and compressed sensing of a field
论文作者
论文摘要
我们表明，通过测量1D或2D信号的Hadamard系数，可以在多参数估计中获得对应于挤压或过度的自旋状态的显着量子增益。我们认为的物理平台是由挤压mott配置的光学晶格中的Twolevel原子组成的，或更一般地由以空间分离模式分布的相关旋转。我们的协议要求有可能局部翻转旋转，但依赖于集体测量。我们提供了标量或向量场映射和压缩感测的应用程序的示例。
We show that a significant quantum gain corresponding to squeezed or over-squeezed spin states can be obtained in multiparameter estimation by measuring the Hadamard coefficients of a 1D or 2D signal. The physical platform we consider consists of twolevel atoms in an optical lattice in a squeezed-Mott configuration, or more generally by correlated spins distributed in spatially separated modes. Our protocol requires the possibility to locally flip the spins, but relies on collective measurements. We give examples of applications to scalar or vector field mapping and compressed sensing.
