Quantum coherence is at the heart of fundamental and applied research aimed at understanding the quantum-classical interface. The loss of coherence (decoherence) is often touted as an irreversible process which sets the entropic arrow of time and gives rise to a coarse-grained classical, non-entangled reality we all experience. Recent results, both theoretical and experimental, are pushing the limits of this conceptual paradigm. We want to build macroscopic systems which include massive coherence, at the many-body level. Specifically:

Design, fabricate and measure superconducting devices with multi-level coherence, to be controlled and measured in the lab.
Ensemble spectroscopy and dynamics in atomic systems (memory and spatial control of light)
Coupled systems for hybrid implementations (superconducting and rare-earth memory devices)

Superconducting Josephson Qubits

Atomic Ensembles