Linear optical quantum metrology with single photons:Experimental errors, resource counting, and quantum Cramér-Rao bounds
| Autor: | Jonathan P. Dowling, Keith R. Motes, Todd Moulder, Nick M. Studer, Margarite L. LaBorde, Peter P. Rohde, Jonathan P. Olson, Patrick M. Birchall |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
Quantum Physics Quantum discord General Physics Quantum sensor Quantum entanglement Quantum imaging 01 natural sciences 010309 optics Quantum technology Open quantum system QETLabs Quantum mechanics 0103 physical sciences Quantum metrology Quantum algorithm Statistical physics 010306 general physics |
| Zdroj: | Olson, J P, Motes, K R, Birchall, P M, Studer, N M, Laborde, M, Moulder, T, Rohde, P P & Dowling, J P 2017, ' Linear optical quantum metrology with single photons : Experimental errors, resource counting, and quantum Cramér-Rao bounds ', Physical Review A, vol. 96, no. 1, 013810 . https://doi.org/10.1103/PhysRevA.96.013810 |
| Popis: | Quantum number-path entanglement is a resource for super-sensitive quantum metrology and in particular provides for sub-shotnoise or even Heisenberg-limited sensitivity. However, such number-path entanglement has thought to have been resource intensive to create in the first place --- typically requiring either very strong nonlinearities, or nondeterministic preparation schemes with feed-forward, which are difficult to implement. Recently in [Phys. Rev. Lett. 114, 170802 (2015)] we showed that number-path entanglement from a BosonSampling inspired interferometer can be used to beat the shot-noise limit. In this manuscript we compare and contrast different interferometric schemes, discuss resource counting, calculate exact quantum Cram\'er-Rao bounds, and study details of experimental errors. Comment: 10 pages, 7 figures |
| Databáze: | OpenAIRE |
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