Reconfigurable Continuous-Variable Distributed Quantum Metrology

Distributed Quantum Metrology is the study of quantum metrological techniques to enhance measurements that are spatially distributed for applications such as phase imaging and global-scale clock synchronization. Recent studies have both theoretically investigated and experimentally demonstrated some interesting schemes using a linear network with nonclassical states of light. Yet, a truly reconfigurable scheme of distributed quantum metrology with arbitrary weights using continuous-variable states has not been studied. In this talk, I will present our recent study on the topic and show our results in designing a reconfigurable distributed quantum metrology scheme with continuous-variable inputs. The ultimate sensitivity in distributed quantum metrology and the conditions for achieving the Heisenberg limit will be discussed.