Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient state preparation for a register of quantum bits   We describe a quantum algorithm to prepare an arbitrary pure state of a
register of a quantum computer with fidelity arbitrarily close to 1. Our
algorithm is based on Grover's quantum search algorithm. For sequences of
states with suitably bounded amplitudes, the algorithm requires resources that
are polynomial in the number of qubits. Such sequences of states occur
naturally in the problem of encoding a classical probability distribution in a
quantum register.

16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin