. . . . . . . . . . . . . . "SU (1,1) interferometry"@en . . . "1078915258"^^ . . "16101"^^ . . . . . . "SU(1,1) interferometry is a technique that uses parametric amplification for splitting and mixing of electromagnetic waves for precise estimation of phase change and achieves the Heisenberg limit of sensitivity with fewer optical elements than conventional interferometric techniques."@en . . "69807546"^^ . . . . "SU(1,1) interferometry is a technique that uses parametric amplification for splitting and mixing of electromagnetic waves for precise estimation of phase change and achieves the Heisenberg limit of sensitivity with fewer optical elements than conventional interferometric techniques."@en . . . . . . . . .