Transformation of Spin in Quantum Reference Frames

Understand

In physical experiments, reference frames are standardly modelled through a specific choice of coordinates used to describe the physical systems, but they themselves are not considered as such.

• However, any reference frame is a physical system that ultimately behaves according to quantum mechanics.
• We develop a framework for rotational (i.e.
• spin) quantum reference frames, with respect to which quantum systems with spin degrees of freedom are described.