Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Femtosecond Transfer and Manipulation of Persistent Hot-Trion Coherence
  in a Single CdSe/ZnSe Quantum Dot   Ultrafast transmission changes around the fundamental trion resonance are
studied after exciting a p-shell exciton in a negatively charged II-VI quantum
dot. The biexcitonic induced absorption reveals quantum beats between hot trion
states at 133 GHz. While interband dephasing is dominated by relaxation of the
P-shell hole within 390 fs, trionic coherence remains stored in the spin system
for 85 ps due to Pauli blocking of the triplet electron. The complex
spectro-temporal evolution of transmission is explained analytically by solving
the Maxwell-Liouville equations. Pump and probe polarizations provide full
control over amplitude and phase of the quantum beats.

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The categories of this paper are: hep-ex
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The categories of this paper are: math
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
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The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
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The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol