Quantum metrology uses non-classical states, such as Fock states with a specific number of photons, to achieve an advantage over classical sensing methods. Typically, quantum metrological performance can be enhanced by increasing the involved excitation numbers, for example, by using large-photon-numbe...
We present a general quantum metrology framework to study the simultaneous estimation of multiple phases in the presence of noise as a discretized model for phase imaging. This approach can lead to nontrivial bounds of the precision for multiphase estimation. Our results show that simultaneous ...
Multiparticle entangled quantum states, a key resource in quantum-enhanced metrology and computing, are usually generated by coherent operations exclusivel... G Barontini,L Hohmann,F Haas,... - 《Science》 被引量: 11发表: 2015年 True precision limits in quantum metrology We show that quantificati...
Quantum metrology is the state-of-the-art measurement technology. It uses quantum resources to enhance the sensitivity of phase estimation over that achievable by classical physics. While single parameter estimation theory has been widely investigated, much less is known about the simultaneous estimation...
Entanglement-enhanced quantum metrology explores the utilization of quantum entanglement to enhance measurement precision. When particles in a probe are prepared into a suitable quantum entangled state, they may collectively accumulate information about the physical quantity to be measured, leading to an ...
Special Issue on Quantum Metrology & Quantum Enhanced MeasurementPhase sensitivity of an SU(1,1) interferometer via product detection Authors: Qingle Wang, Yami Fang, Xiaoping Ma and Dong Li Citation: EPJ Quantum Technology 2021 8:21 Content type: Research Published on: 17 August 2021 ...
Introduction Quantum metrology exploits quantum mechanical resources, such as entanglement and squeezing, to measure a physical parameter with higher resolution than any strategy with classical resources. Many quantum metrology protocols in the photonic regime1have been proposed such as quantum illumination ...
Tracking a randomly varying optical phase is a key task in metrology, with applications in optical communication. The best precision for optical-phase tracking has until now been limited by the quantum vacuum fluctuations of coherent light. Here, we surpass this coherent-state limit by using a co...
摘要: Tracking a randomly varying optical phase is a key task in metrology, with applications in optical communication. The best precision for optical-phase tracking has until now been l... 查看全部>>DOI: 10.1126/SCIENCE.1225258 年份: 2012 ...
(a) General scheme for quantum-enhanced metrology. N-probe quantum state fed into N parallel channels is sensing an unknown channel parameter ϕ. An estimator j is inferred from a measurement result on the output state. (b) CS of a quantum channel. The channel ϕ is interpreted as a ...