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Two Color Entanglement
Aiko Samblowski, Christina E. Laukötter, Nicolai Grosse +2
We report on the generation of entangled states of light between the wavelengths 810 and 1550 nm in the continuous variable regime. The fields were produced by type I optical param…
Iterative Entanglement Distillation: Approaching full Elimination of Decoherence
Boris Hage, Aiko Samblowski, James DiGuglielmo +2
The distribution and processing of quantum entanglement form the basis of quantum communication and quantum computing. The realization of the two is difficult because quantum infor…
Quantum Enhancement of the Zero-Area Sagnac Interferometer Topology for Gravitational Wave Detection
Tobias Eberle, Sebastian Steinlechner, Jöran Bauchrowitz +5
Only a few years ago, it was realized that the zero-area Sagnac interferometer topology is able to perform quantum nondemolition measurements of position changes of a mechanical os…
Broadband squeezing of quantum noise in a Michelson interferometer with Twin-Signal-Recycling
André Thüring, Christian Gräf, Henning Vahlbruch +3
Twin-Signal-Recycling (TSR) builds on the resonance doublet of two optically coupled cavities and efficiently enhances the sensitivity of an interferometer at a dedicated signal fr…
The GEO600 squeezed light source
Henning Vahlbruch, Alexander Khalaidovski, Nico Lastzka +3
The next upgrade of the GEO600 gravitational wave detector is scheduled for 2010 and will, in particular, involve the implementation of squeezed light. The required non-classical l…
Realization of a monolithic high-reflectivity cavity mirror from a single silicon crystal
Frank Brückner, Daniel Friedrich, Tina Clausnitzer +6
We report on the first experimental realization of a high-reflectivity cavity mirror that solely consists of a single silicon crystal. Since no material was added to the crystal, t…