2013/10/31 by Karsten Leonhardt, K. Leonhardt, Sebastian Wüster +3
Computer Science · Physics and Astronomy · #Atomic physics #Coherence (philosophical gambling strategy) #Conical intersection #Conical surface #Dipole #Excitation #Excited state #Exciton #Materials science #Physics #Quantum #Quantum Information and Cryptography #Quantum decoherence #Quantum entanglement #Quantum mechanics #Quantum optics and atomic interactions #Rydberg atom #Rydberg formula #Spectroscopy and Quantum Chemical Studies #physics.atom-ph
paper · pdf · doi:10.1103/physrevlett.113.223001
published as Phys. Rev. Lett. 113 (2014) 223001 · Letter with 4 pages and 4 figures. Supplemental material with 4 pages and 4 figures
openalex publication_date 2014/11/24 · arxiv created 2014/12/03 · arxiv updated 2014/12/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Exciton pulses transport excitation and entanglement adiabatically through Rydberg aggregates, assemblies of highly excited light atoms, which are set into directed motion by resonant dipole-dipole interaction. Here, we demonstrate the coherent splitting of such pulses as well as the spatial segregation of electronic excitation and atomic motion. Both mechanisms exploit local nonadiabatic effects at a conical intersection, turning them from a decoherence source into an asset. The intersection provides a sensitive knob controlling the propagation direction and coherence properties of exciton pulses. The fundamental ideas discussed here have general implications for excitons on a dynamic network.