Publications (9)
Preparation of distilled and purified continuous variable entangled states
Boris Hage, Aiko Samblowski, James DiGuglielmo +3
The distribution of entangled states of light over long distances is a major challenge in the field of quantum information. Optical losses, phase diffusion and mixing with thermal…
Weak-signal conversion from 1550nm to 532nm with 84% efficiency
Aiko Samblowski, Christina E. Vollmer, Christoph Baune +2
We report on the experimental frequency conversion of a dim, coherent continuous-wave light field from 1550nm to 532nm with an external photon-number conversion efficiency of (84.4…
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…
Towards Einstein-Podolsky-Rosen quantum channel multiplexing
Boris Hage, Aiko Samblowski, Roman Schnabel
A single broadband squeezed field constitutes a quantum communication resource that is sufficient for the realization of a large number N of quantum channels based on distributed E…
Observation of one-way Einstein-Podolsky-Rosen steering
Vitus Händchen, Tobias Eberle, Sebastian Steinlechner +4
The distinctive non-classical features of quantum physics were first discussed in the seminal paper by A. Einstein, B. Podolsky and N. Rosen (EPR) in 1935. In his immediate respons…
Markov Chain Monte Carlo Estimation of Quantum States
James DiGuglielmo, Chris Messenger, Jaromir Fiurasek +4
We apply a Bayesian data analysis scheme known as the Markov Chain Monte Carlo (MCMC) to the tomographic reconstruction of quantum states. This method yields a vector, known as the…
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…
Continuous-wave non-classical light with GHz squeezing bandwidth
Stefan Ast, Aiko Samblowski, Moritz Mehmet +3
Squeezed states can be employed for entanglement-based continuous-variable quantum key distribution, where the secure key rate is proportional to the bandwidth of the squeezing. We…
Quantum non-Gaussianity of frequency up-converted single photons
Christoph Baune, Axel Schönbeck, Aiko Samblowski +2
Nonclassical states of light are an important resource in today's quantum communication and metrology protocols. Quantum up-conversion of nonclassical states is a promising approac…