Femtosecond Transfer and Manipulation of Persistent Hot-Trion Coherence in a Single <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>CdSe</mml:mi><mml:mo>/</mml:mo><mml:mi>ZnSe</mml:mi></mml:math> Quantum Dot

Ultrafast transmission changes around the fundamental trion resonance are studied after exciting a p-shell exciton in negatively charged II-VI quantum dot. The biexcitonic induced absorption reveals beats between hot states at 133 GHz. While interband dephasing is dominated by relaxation of P-shell hole within 390 fs, trionic coherence remains stored spin system for 85 ps due to Pauli blocking triplet electron. complex spectro-temporal evolution explained analytically solving Maxwell-Liouville equations. Pump and probe polarizations provide full control over amplitude phase beats.