Quantum simulation of noncausal kinematic transformations

Phys Rev Lett. 2013 Aug 30;111(9):090503. doi: 10.1103/PhysRevLett.111.090503. Epub 2013 Aug 28.

Abstract

We propose the implementation of Galileo group symmetry operations or, in general, linear coordinate transformations in a quantum simulator. With an appropriate encoding, unitary gates applied to our quantum system give rise to Galilean boosts or spatial and time parity operations in the simulated dynamics. This framework provides us with a flexible toolbox that enhances the versatility of quantum simulation theory, allowing the direct access to dynamical quantities that would otherwise require full tomography. Furthermore, this method enables the study of noncausal kinematics and phenomena beyond special relativity in a quantum controllable system.