In this captivating episode, we're joined by Dr. Autti, a leading physicist who takes us into the mesmerizing world of time crystals - macroscopic quantum systems in periodic motion in their ground state.

The groundbreaking experiments by Dr. Autti and his team provide an in-depth look at two coupled time crystals made of spin-wave quasiparticles, known as magnons. These form a macroscopic two-level system with a fascinating twist: the two levels evolve over time based on an intrinsic nonlinear feedback, creating a form of spontaneous two-level dynamics.

Dr. Autti elucidates the process of a level crossing in these systems, where magnons move from the ground level to the excited level due to the Landau-Zener effect and Rabi population oscillations. This exploration of magnon time crystals reveals a way to access every detail of quantum-coherent interactions in a single experiment.

We also discuss the potential applications and implications of this research. Not only does this study open avenues for the detection of surface-bound Majorana fermions in the underlying superfluid system, but it also prompts the possibility of harnessing coherent magnon phenomena in technological applications - potentially even at room temperature.

Join us as we traverse the fascinating terrains of quantum physics, exploring the concept of time crystals, and uncover the potential they hold in the world of quantum technology.

Keywords: Dr. Autti, Time Crystals, Quantum Systems, Magnons, Quantum Coherent Interactions, Nonlinear Feedback, Landau-Zener Effect, Rabi Population Oscillations, Majorana Fermions, Superfluid Systems.

Autti, S., Heikkinen, P.J., Nissinen, J. et al. Nonlinear two-level dynamics of quantum time crystals. Nat Commun 13, 3090 (2022). https://doi.org/10.1038/s41467-022-30783-w