Generation of squeezed TEM ₀₁ modes with periodically poled KTiOPO ₄ crystal

Abstract

Spatial quantum optics and quantum information based on the high order transverse mode are of importance for the super-resolution measurement beyond the quantum noise level. We demonstrated experimentally the transverse plane TEM 01 Hermite-Gauss quantum squeezing. The squeezed TEM 01 mode is generated in a degenerate optical parametric amplifier with the nonlinear crystal of periodically poled KTiOPO 4 . The level of 2.2-dB squeezing is measured using a spatial balance homodyne detection system.

Generation of entangled TEM01modes with periodically poled KTiOPO4crystal

“…[12] In 2011, we demonstrated experimentally the transverse plane TEM 01 Hermite-Gauss quantum squeezing. [13] In 2013, a group from the Australia National University experimentally demonstrated biological measurement. [14] In addition, spatial transverse quantum correlation can be applied to sensitive measurement of minuteness displacement and tilt beyond the standard quantum limit, [15][16][17][18] noiseless images amplification.…”

Generation of a continuous-wave squeezed vacuum state at 1.3 μm by employing a home-made all-solid-state laser as pump source

“…[1,2] At the same time, they can be also used to construct entangled states of light, [3][4][5] which are crucial resources for secure quantum key distribution, for the generation of cluster states for quantum computing, [6] and for quantum information networks. [7][8][9] For any application of the squeezed states of light, mapping and transferring a squeezed state are two critical tasks not only for quantum information but also for ultra-precise optical measurement, since the quantum nature is very susceptive to optical loss. So squeezed states at atom transition and telecommunication (1.5 µm and 1.3 µm) wavelengths are particularly useful.…”

Experimental Demonstration of a Displacement Measurement of an Optical Beam beyond the Quantum Noise Limit

“…The first step of the experiment is to generate TEM 10 quadrature amplitude squeezing with OPA under the parametric de-amplification condition. [17] Blocking the intense light from the mode cleaner and turning off displacement modulation, we can obtain a TEM 10 quadrature amplitude squeezing. The results are plotted in Fig.…”