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quant-ph2025
Amplified quantum non-demolition measurements of optical quadratures using quadratic nonlinearity
D. I. Salykina, V. S. Liamin, P. R. Sharapova +1
Quantum non-demolition (QND) measurement is a special technique that allows to evade quantum back-action. In this paper, we propose a new QND measurement scheme of the optical fiel…
quant-ph2025
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…
gr-qc2025
Increasing quantum speed meter sensitivity using optical spring
L. A. Barinov, F. Ya. Khalili
The double-pass interferometer scheme was proposed in Ref.\,[Light Sci. Appl. {\bf 7}, 11 (2018)] as the method of implementation of the quantum speed meter concept in future laser…