TY  - JOUR
AU  - Karuseichyk, I.
AU  - Sorelli, G.
AU  - Walschaers, M.
AU  - Treps, N.
AU  - Gessner, M.
PY  - 2022
DA  - 2022//
TI  - Resolving mutually-coherent point sources of light with arbitrary statistics
T2  - Phys. Rev. Res.
JO  - Physical Review Research
SP  - 043010
EP  - 11pp
VL  - 4
IS  - 4
PB  - Amer Physical Soc
AB  - We analyze the problem of resolving two mutually coherent point sources with arbitrary quantum statistics, mutual phase, and relative and absolute intensity. We use a sensitivity measure based on the method of moments and compare direct imaging with spatial-mode demultiplexing (SPADE), analytically proving advantage of the latter. We show that the moment-based sensitivity of SPADE saturates the quantum Fisher information for all known cases, even for non-Gaussian states of the sources.
UR  - https://doi.org/10.1103/PhysRevResearch.4.043010
DO  - 10.1103/PhysRevResearch.4.043010
LA  - English
N1  - WOS:000876858200004
ID  - Karuseichyk_etal2022
ER  -