The generation of macroscopic quantum states is a challenging goal throughout many fields of physics. Not only would it be fascinating to see quantum effects on a macroscopic scale, their generation is also a prerequisite if one wants to exploit quantum effects for real-world applications. In a joint publication, recently published in Physical Review Letters*, scientists from two groups at the University of Paderborn, the IQO and the MQO, in…

Stephan Krapick successfully defended his Ph.D. thesis titled "Cascaded Wavelength Conversion Processes in Lithium Niobate Waveguide Structures".

[Scientific Reports 5, 13495 (2015)] The aim for understanding transport phenomena is at the heart of many studies on processes in nature and man-made structures ranging from photosynthesis to information network applications. Recent research indicates that the combination of classical with quantum effects can explain or introduce highly unexpected behaviour of the overall system. In order to understand quantum transport processes on a random or…

Rebeccah Grotemeyer defended her bachelor's thesis with the title "Comparison of classically excited modes and modes excited through parametric down-conversion".

Laura Padberg defended her bachelor's thesis with the title "Periodisch gepolte Wellenleiter in Kaliumtitanylphosphat".

Jano Gil López defended his bachelor's thesis with the title "Near-infrared ultrafast laser shaping using spatial light modulators"

Sofía Herrero Simón defended her bachelor's thesis with the title "Characterization of the spatial modes of nonlinear KTP waveguides".

Scientists in the group of Christine Silberhorn in Paderborn and the group of Werner Vogel in Rostock have demonstrated a new method to identify nonclassical correlations between two parties sharing a quantum state. The method allows to characterize quantum states and resources in a simple and straight forward way. The results are published in Uncovering Quantum Correlations with Time-Multiplexed Click Detection, Phys. Rev. Lett. 115, 023601…

Sebastian Brauner defended his bachelor's thesis with the title "Elektrooptisch schaltbare Faserschleife zur Photonenspeicherung".

QUCHIP – Quantum Simulation on a Photonic Chip is a FET-ProActive project funded under the call FETPROACT-3-2014: Quantum simulation.

Unsere langjährige Stütze im Sekretariat geht nun endgültig in den wohlverdienten Ruhestand.

Die UNESCO hat 2015 zum “Internationalen Jahr des Lichts und der lichtbasierten Technologien” erklärt. Es steht unter dem Motto „Licht für Wandel“ und soll an die Bedeutung von Licht als elementare Lebensvoraussetzung erinnern sowie den gesellschaftlichen Nutzen der wissenschaftlichen Erkenntnisse über das Licht, z. B. in der Medizin oder im Bereich Kommunikation, ins Bewusstsein rücken.

In a joint cooperation of several research groups (including the IQO group), quantum teleportation over up to 25 km long fiber links and coupling to a solid state memory were demonstrated. Key results are now published in Nature Photonics.

On July 1st, Olga Driesner defended her Master's thesis entitled "Vergrabene Lichtwellenleiter in Kalium Titanly Phosphat".

On March 26th, 2014, Benjamin Brecht successfully defended his Ph.D. thesis titled "Engineering ultrafast quantum frequency conversion".