Fluorescence quantum beats reveal tunable decoherence and the effect of transport in spin-entangled exciton pairs

Journal Article · Wed Oct 01 00:00:00 EDT 2025 · Optica Open

DOI:https://doi.org/10.1364/opticaopen.26885443.v1· OSTI ID:2997791

Biaggio, Ivan

Spin-decoherence in a population of entangled exciton pairs in an organic semiconductor can be tuned by the orientation of an applied magnetic field. Magnetic field dependent measurements of photoinduced fluorescence quantum beats and a model of spin coherence that accounts for transport-induced dephasing are used to derive the exciton hopping rate between inequivalent sites in a crystal lattice.

• Research Organization: Lehigh University
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
• Grant/Contract Number: SC0020981
• OSTI ID: 2997791
• Journal Information: Optica Open, Journal Name: Optica Open Vol. 9
• Publisher: Optica Publishing Group
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
triplet excitons
decoherence
dephasing
singlet fission
organic semiconductors
quantum breats