Schrödinger Cats 2027

Macroscopic quantum superpositions already intrigued the founding fathers of quantum mechanics. Their peculiar non-classical nature is often emphasized by reference to the seemingly paradoxical thought experiment of “Schrödinger cat states”, which signify something large, complex and in a superposition of at least two clearly distinct states – which would be classically mutually exclusive. 
In recent years, both theory and experiment have made several quantum leaps. It has become possible to generate quantum ground states of massive cantilevers, trapped nanoparticles, acoustic modes in bulk solids, in mesoscopic many-body systems and more. Mesoscopic quantum superpositions have been prepared with huge electron systems in SQUIDS, over half-meter scales with atoms and on the fractional micrometer scale still with particles composed of thousands of atoms. 
Three key motivations are driving this research:

1. Quest for an understanding of the foundations of physics: Investigating macroscopic superpositions deepens our comprehension of the quantum-to-classical transition, challenging and refining the boundaries of quantum mechanics.
2. Exploring the interface to gravitational physics: Such superpositions offer a unique platform to study the interplay between quantum mechanics and gravity, potentially shedding light on the quantum nature of gravity or the role of gravity in the classicalization of quantum mechanics.
3. Metrology and Quantum Sensing: Macroscopic superpositions may enhance sensitivity in metrology and the development of cutting-edge quantum sensors.

The goal of the meeting is to
Facilitate knowledge exchange: Provide a platform for experts and young scientists to share recent findings and theoretical advancements in macroscopic quantum   superpositions.

Highlight the best of the state-of-the-art: We will showcase recent breakthroughs in creating and observing cat states in various physical systems.

The conference language will be English. The Wilhelm and Else Heraeus-Foundation bears the cost of full-board accommodation for all participants.