Fig. 4: Purcell-enhanced chirally coupled QD.

a Chiral measurements of a QD near the slow-light region. The PL was collected from the right outcoupler of the device. Strong chirality was observed using magnetic field at 3 T (red line) and −3T (blue line) for both 0 V bias (A point), and 3 V bias (point B). The broad line that emerges below the QD at 3 V might be a charge state with short lifetime or another QD. b PL scan for the chirally coupled QD. c Lifetime measurement for the QD at point A (red) and point B (blue) using non-resonant excitation pulse laser at 808 nm. The fitted decay time decreased from 420 ps to 255 ps on red-shifting the QD emission line from 874.4 (point A) to 876.1 nm (point B).