Low-noise macroscopic twin beams
arXiv:1408.6407 · doi:10.1103/PhysRevA.93.043849
Abstract
Applying a multiphoton-subtraction technique to two-color macroscopic squeezed vacuum state of light generated via high-gain parametric down conversion we conditionally prepare a new state of light: bright multi-mode low-noise twin beams. The obtained results demonstrate up to 8-fold suppression of noise in each beam while preserving and even moderately improving the nonclassical photon number correlations between the beams. The prepared low-noise macroscopic state, containing up to 2000 photons per mode, is not among the states achievable through nonlinear optical processes. The proposed technique substantially improves the usefulness of twin beams for quantum technologies.
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- Quantum imaging with sub-Poissonian light: challenges and perspectives in optical metrology
- Multiphoton Effects Enhanced Due to Ultrafast Photon-Number Fluctuations
- Heralded Source of Bright Multi-mode Mesoscopic Sub-Poissonian Light
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- Full statistical mode reconstruction of a light field via a photon-number resolved measurement
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