Journal
PHYSICAL REVIEW A
Volume 85, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.85.043817
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Funding
- MIUR [RBFR10YQ3H]
- UK EPSRC [EP/I026436/1]
- MAE (INQUEST)
- UniMi
- UIF/UFI
- University of Trieste [FRA2009]
- EPSRC [EP/I026436/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I026436/1] Funding Source: researchfish
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Phase diffusion represents a crucial obstacle toward the implementation of high-precision interferometric measurements and phase-shift-based communication channels. Here we present a nearly optimal interferometric scheme based on homodyne detection and coherent signals for the detection of a phase shift in the presence of large phase diffusion. In our scheme the ultimate bound to interferometric sensitivity is achieved already for a small number of measurements, of the order of hundreds, without using nonclassical light.
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