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Environmental Assisted Quantum Information Correction for Continuous Variables
Metin Sabuncu, Radim Filip, Gerd Leuchs +1
Quantum information protocols are inevitably affected by decoherence which is associated with the leakage of quantum information into an environment. In this paper we address the p…
Demonstration of Coherent State Discrimination Using a Displacement Controlled Photon Number Resolving Detector
Christoffer Wittmann, Ulrik L. Andersen, Masahiro Takeoka +2
We experimentally demonstrate a new measurement scheme for the discrimination of two coherent states. The measurement scheme is based on a displacement operation followed by a phot…
Discrimination of Optical Coherent States using a Photon Number Resolving Detector
Christoffer Wittmann, Ulrik L. Andersen, Gerd Leuchs
The discrimination of non-orthogonal quantum states with reduced or without errors is a fundamental task in quantum measurement theory. In this work, we investigate a quantum measu…
Correlation Measurement of Squeezed Light
Leonid A. Krivitsky, Ulrik L. Andersen, Ruifang Dong +3
We study the implementation of a correlation measurement technique for the characterization of squeezed light which is nearly free of electronic noise. With two different sources o…
A Novel Method for Polarization Squeezing with Photonic Crystal Fibers
Josip Milanovic, Mikael Lassen, Ulrik L. Andersen +1
Photonic Crystal Fibers can be tailored to increase the effective Kerr nonlinearity, while producing smaller amounts of excess noise compared to standard silicon fibers. Using thes…
Demonstration of Quadrature Squeezed Surface-Plasmons in a Gold Waveguide
Alexander Huck, Stephan Smolka, Peter Lodahl +4
We report on the efficient generation, propagation, and re-emission of squeezed long-range surface-plasmon polaritons (SPPs) in a gold waveguide. Squeezed light is used to excite t…
Continuous Variable Entanglement and Squeezing of Orbital Angular Momentum States
Mikael Lassen, Gerd Leuchs, Ulrik L. Andersen
We report the first experimental characterization of the first-order continuous variable orbital angular momentum states. Using a spatially non-degenerate optical parametric oscill…