Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum illumination versus coherent-state target detection   Lloyd [1] proved that a large performance gain accrues from use of
entanglement in single-photon target detection within a lossy, noisy
environment when compared to what can be achieved with unentangled
single-photon states. We show that the performance of Lloyd's "quantum
illumination" system is, at best, equal to that of a coherent-state
transmitter, and may be substantially worse. Nevertheless, as shown in [2],
quantum illumination may offer a significant performance gain when operation is
not limited to the single-photon regime.

33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat