Hannover 2016 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 27: Poster: Quantum Optics and Photonics II
Q 27.38: Poster
Tuesday, March 1, 2016, 16:30–19:00, Empore Lichthof
Sub-Shot-Noise Regime in Light-Pulse Atom Interferometry — •Stephan Kleinert, Wolfgang P. Schleich, and the QUANTUS Team — Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm
Entanglement as a key feature of quantum mechanics is an useful resource in quantum information as well as in quantum metrology. In particular, entanglement in high-precision measurements is used to enhance the phase sensitivity of interferometer devices. The implementation of quantum correlated atoms for instance opens the possibility of beating the (classical) standard quantum limit.
The representation-free description of light-pulse atom interferometry [1] provides a general theoretical framework for arbitrary interferometer geometries in the presence of external potentials and non-inertial forces. Here, we generalize this representation-free approach in order to describe efficiently many-particle entanglement in light-pulse atom interferometers and thus operate beyond the shot-noise limit.
The QUANTUS project is supported by the German Space Agency (DLR) with
funds provided by the Federal Ministry of Economics and Energy (BMWi) under grant number 50WM1556.
[1] S. Kleinert, et al., Representation-free description of light-pulse atom interferometry including non-inertial effects, Physics Reports (2015).