Heidelberg 2015 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 1: Quantum Optics I

Q 1.5: Talk

Monday, March 23, 2015, 12:30–12:45, C/HSO

Experimental implementation of a quantum pulse gate for ultrafast quantum temporal modes — •Vahid Ansari, Markus Allgaier, Raimund Ricken, Viktor Quiring, Hubertus Suche, Benjamin Brecht, and Christine Silberhorn — Integrierte Quantenoptik, Universität Paderborn, Warburger Str. 100, D-33098 Paderborn

We recently demonstrated a Quantum Pulse Gate (QPG), which can operate on temporal modes of ultrafast quantum states [1]. Here we experimentally present benchmarks for the operation of QPG utilising single photons generated in a process of Parametric Down-conversion (PDC) [2]. We show a highly efficient QPG operation on PDC photons using extremely low pump energies. In addition, we show the temporal mode-selective operation of QPG on the PDC photons. The application of QPG along with single photons in different temporal modes is a promising candidate for high-dimensional quantum information coding.

[1] Brecht, et al., Phys. Rev. A 90, 030302(R) (2014)

[2] Harder, et al., Opt. Exp. 21, 13975 (2013)