Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Single Qubit Quantum State Tomography   In this paper, we derive analytic expressions for the starting (initial)
values of the parameters of the T-matrix that is frequently employed in the
construction of a theoretical density matrix in a Maximum Likelihood Estimate
(MLE) procedure; this optimization procedure is used to fit the experimental
data pertaining to single qubit state tomography. Appropriate starting values
are critical in achieving a global minimum in the fitting process. We also
indicate an analytic way of making the experimentally determined density matrix
physical without resorting to the MLE process, if optimality in quantum state
tomography can be disregarded, since the ultimate goal is optimality in quantum
process tomography.

29
The categories of this paper are: funct-an
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int