4 papers
Using anti-squeezed Schrödinger cat states for detection of a given phase shift
V. L. Gorshenin, K. D. Dyadkin, S. D. Chikalkin
We propose to use the antisqueezing-enhanced non-Gaussian Schrödinger cat quantum states of the probing light for the task of detection of a given phase shift in optical interferom…
Photon number projective measurement in Schrödinger cat quantum state preparation procedure after parametric down-conversion interaction
V. L. Gorshenin
Schrödinger-cat (SC) states are an important resource for continuous-variable quantum computing and quantum metrology. In our previous work [JOSA B, 42, 2 (2025)], we proposed a pr…
Heisenberg limit in phase measurements: the threshold detection approach
D. I. Salykina, V. S. Liamin, V. L. Gorshenin +2
The ultimate precision of phase estimation is limited by the Heisenberg scaling , where is a numerical prefactor and is the mean number of photons interact…
Using Schroedinger cat quantum state for detection of a given phase shift
V. L. Gorshenin
We show that injecting a light pulse prepared in the Shroedinger cat quantum state into the dark port of a two-arm interferometer and the strong classical light into the bright one…