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...
When noise is low, those bounds possess the Heisenberg scale showing quantum-enhanced precision with the O(d) advantage for SE, where d is the number of phases. However, this O(d) advantage of SE scheme in the variance of the estimation may disappear asymptotically when photon loss becomes ...
QUANTUM METROLOGY WITHOUT QUANTUM ENTANGLEMENT quantum enhanced metrologyentangled statesBose-Einstein condensateslight-matter interfaces/ A0365B Foundations, theory of quantum measurement, miscellaneous quantum ... A Datta,A Shaji - 《Modern Physics Letters B》 被引量: 7发表: 2012年 Quantum metrology ...
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 ...
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...
There is a prevalent effort to achieve quantum-enhanced metrology using criticality. However, the extent to which estimation precision is enhanced through criticality still needs further exploration under the constraint of finite time resources. We clarify relations between quantum metrology and criticality...
Results Bounds on precision in quantum-enhanced metrology. The typical quantum metrology scenario is depicted in Fig. 1a. An ensemble of N quantum systems undergo in parallel the same transformation ouϕt p, uwthsitcahtediespmenedassuorend an unknown physical parameter ϕ. The and the ...
We theoretically investigate the quantum enhanced metrology using two-mode squeezed twin-Fock states and parity detection. Our results indicate that, for a given initial squeezing parameter, compared with the two-mode squeezed vacuum sta... L. Hou 侯,S. Wang 王,X. Xu 许 - 《Chinese Physics ...
A recent review of other approaches to quantum-enhanced metrology that avoid initial entanglement can be found in ref. 27. We study quantum-chaotic enhancement of sensitivity at the example of the measurement of a classical magnetic field with a spin-precession magnetometer. In these devices that ...
QUANTUM METROLOGY WITHOUT QUANTUM ENTANGLEMENT quantum enhanced metrologyentangled statesBose-Einstein condensateslight-matter interfaces/ A0365B Foundations, theory of quantum measurement, miscellaneous quantum ... A Datta,A Shaji - 《Modern Physics Letters B》 被引量: 7发表: 2012年 加载更多来源...