Mainz 2017 – scientific programme

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A: Fachverband Atomphysik

A 20: Poster Session I

A 20.25: Poster

Tuesday, March 7, 2017, 17:00–19:00, P OG1

Control of X-Ray Interferences with Nuclei via Magnetic Switching — Gregor Ramien, •Jonas Gunst, Xiangjin Kong, Christoph H. Keitel, and Adriana Pálffy — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

While Moore’s law predicts the fast evolution of miniaturization, for future photonic devices the optical diffraction limit will emerge as bottleneck. This motivates the investigation of information carriers or flying qubits with particularly short wavelengths, e.g., x-ray photons, which range on the energy scale of low-lying nuclear transitions. Versatile control of the basic properties of such photons is the key requirement for short wavelength photonic qubits. Nuclear forward scattering, as it occurs with ⁵⁷Fe Mössbauer nuclei, presents a great basis for exerting coherent control on x-ray photons. The nuclear response can be controlled by subjecting the sample to a hyperfine magnetic field and to fast variations, i.e., switchings, of the latter. For instance, a timed on-/off-switching can lead to a coherent storage of the x-ray photon over a period of several dozen nanoseconds [1]. In this work, we investigate the implementation of periodic switching sequences: the switching affects the behaviour of the interference pattern of the nuclear forward scattering signal, the so-called quantum beat. Our focus lies on the field variation effects on the time and frequency spectrum, and identifying emerging patterns herein.

[1] W. Liao, A. Pálffy, C. H. Keitel, Phys. Rev. Lett. 109, 197403 (2012).