Experimental Demonstration of Squeezed State Quantum Averaging
arXiv:1002.2324 · doi:10.1103/PhysRevA.82.021801
Abstract
We propose and experimentally demonstrate a universal quantum averaging process implementing the harmonic mean of quadrature variances. The harmonic mean protocol can be used to efficiently stabilize a set of fragile squeezed light sources with statistically fluctuating noise levels. The averaged variances are prepared probabilistically by means of linear optical interference and measurement induced conditioning. We verify that the implemented harmonic mean outperforms the standard arithmetic mean strategy. The effect of quantum averaging is experimentally tested both for uncorrelated and partially correlated noise sources with sub-Poissonian shot noise or super-Poissonian shot noise characteristics.
4 pages, 5 figures
References in corpus (6)
- Universal Quantum Computation with Continuous-Variable Cluster States
- Squeezing and entanglement in a Bose-Einstein condensate
- Demonstration of Quadrature Squeezed Surface-Plasmons in a Gold Waveguide
- Continuous Variable Entanglement and Squeezing of Orbital Angular Momentum States
- Experimental demonstration of continuous variable purification of squeezed states
- Experimental distillation of squeezing from non-Gaussian quantum states
Cited by in corpus (11)
- Conditional non-Gaussian quantum state preparation
- Testing higher-order quantum interference with many-particle states
- Enhancement of nonclassical properties of two-mode squeezed vacuum state with postselected von Neumann measurement
- Coupled three-mode squeezed vacuum: Gaussian steering and remote generation of Wigner negativity
- Quadrature Coherence Scale of Linear Combinations of Gaussian Functions in Phase Space
- Quantum counterfactuality with identical particles
- Nonclassical resource for continuous variable telecloning with non-Gaussian advantage
- Improving Continuous-variable Quantum Channels with Unitary Averaging
- Estimation of Wigner distribution of single mode Gaussian states: a comparative study
- Teleamplification on the Borealis boson-sampling device
- Single-Photon-Subtracted-Squeezed-Vacuum-State Based Postselected Weak Measurement and its Applications