6 papers
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 intera…
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 p…
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 interfero…
Preparation of Schrödinger cat quantum state using parametric down-conversion interaction
V. L. Gorshenin
The Schrödinger cat (SC) states are important in quantum optics because of their non-Gaussian properties. We propose a novel method of conditional generation of bright (multi-phot…
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…
Using non-Gaussian quantum states for detection of a given phase shift
V. L. Gorshenin, F. Ya. Khalili
Injecting a non-Gaussian (Fock or Shrödinger cat) quantum state into the dark port of a two-arm interferometer and a strong classical light into the bright one, it is possible, in…