Mainz 2026 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 71: Cavity QED and QED II
Q 71.5: Vortrag
Freitag, 6. März 2026, 12:00–12:15, P 4
Control of photon number wave packets in a microcavity — •Luca Nimmesgern1, Moritz Cygorek2, Doris E. Reiter2, and Vollrath Martin Axt1 — 1Universität Bayreuth, Germany — 2CMT, TU Dortmund, Germany
In order to implement quantum information algorithms, it is necessary to be able to directly control the quantum state of the underlying physical platform. Light is promising candidate, offering fast transmission and low decoherence. However, its infinite degrees of freedom make it challenging to define an optimal method for encoding information in its quantum state.
While most research is concerned with low photon numbers, our efforts are focused on states including higher, but not macroscopically large photon numbers. In this regime, structures, called photon number wave packets, which are characterised by an oscillating mean and finite width, have been recently investigated [1]. In this contribution, we show how the dynamics of these structures can be understood. Further, we demonstrate how additional packets can be dynamically created [2]. The conceptual simplicity of this manipulation might indicate the packet structure to be a suitable base for novel ways of information encoding.
[1] L. Nimmesgern et al., Phys. Rev. B 109, 155436 (2024).
[2] L. Nimmesgern et al. (submitted), arXiv:2509.03083.