2013/11/15 by Arjan F. van Loo, Arkady Fedorov, Kevin Lalumière +3 · 3 citations
Computer Science · Physics and Astronomy · #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum optics and atomic interactions #cond-mat.mes-hall #cond-mat.supr-con #quant-ph
paper · pdf · doi:10.1126/science.1244324
published as Science 342, 1494 (2013) · 4 pages, 4 figures and supplementary material (1 page)
openalex publication_date 2013/11/15 · arxiv created 2014/07/24 · arxiv updated 2014/08/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/02
Photon-mediated interactions between atoms are of fundamental importance in quantum optics, quantum simulations and quantum information processing. The exchange of real and virtual photons between atoms gives rise to non-trivial interactions the strength of which decreases rapidly with distance in three dimensions. Here we study much stronger photon mediated interactions using two superconducting qubits in an open onedimensional transmission line. Making use of the unique possibility to tune these qubits by more than a quarter of their transition frequency we observe both coherent exchange interactions at an effective separation of 3λ/4 and the creation of super- and sub-radiant states at a separation of one photon wavelength λ. This system is highly suitable for exploring collective atom/photon interactions and applications in quantum communication technology.