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Phase space Heisenberg-limited estimation of the average phase shift in a Mach–Zehnder interferometer
- Source :
- Gatto, D, Facchi, P & Tamma, V 2020, ' Phase space Heisenberg-limited estimation of the average phase shift in a Mach–Zehnder interferometer ', International Journal of Quantum Information . https://doi.org/10.1142/S0219749919410193
- Publication Year :
- 2020
- Publisher :
- World Scientific Pub Co Pte Lt, 2020.
-
Abstract
- We address the problem of distributed quantum metrology with a single squeezed-vacuum source by using the formalism of quantum mechanics in phase space. In particular, we demonstrate Heisenberg-limited sensitivity in the measurement of the average of two arbitrary phase shifts in the arms of a Mach–Zehnder interferometer. We obtain exact results for the measurement probability at the interferometer output for any value of the phases, which give us insight into the emergence of Heisenberg-limited sensitivity for periodical values of the phases.
- Subjects :
- Quantum optics
Physics
Physics and Astronomy (miscellaneous)
quantum metrology
02 engineering and technology
021001 nanoscience & nanotechnology
Mach–Zehnder interferometer
01 natural sciences
Formalism (philosophy of mathematics)
Heisenberg limit
squeezed states
Quantum mechanics
Phase space
0103 physical sciences
Quantum metrology
quantum optics
010306 general physics
0210 nano-technology
Subjects
Details
- ISSN :
- 17936918 and 02197499
- Volume :
- 18
- Database :
- OpenAIRE
- Journal :
- International Journal of Quantum Information
- Accession number :
- edsair.doi.dedup.....7cd54b1c163a19208a1a67225ad7cd46