‘Free-space’ Chiral Quantum Optics and a ‘Few-Atom’ Quantum Antenna

Peter Zoller - University of Innsbruck

We start with an overview of chiral quantum optics as quantum light-atom interfaces with broken left- right symmetry and associated quantum optical phenomena and applications. While chiral quantum optics is traditionally discussed in context of nano-photonics and nano fibers , we propose here a novel ‘free-space’ chiral quantum optics realized as atoms in free space coupled to a ‘few-atom’ quantum antenna. In particular, we discuss free space photonic quantum links between atoms (qubits) equipped with sending and receiving quantum antennas. This provides a novel implementation of a chiral quantum network for ‘on-chip’ quantum communication to scale up atomic quantum computers.