Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unambiguous discrimination of extremely similar states by a weak
  measurement   In this paper, we propose a method to discriminate two extremely similar
quantum states via a weak measurement. For the two states with equal prior
probabilities, the optimum discrimination probability given by
Ivanovic-Dieks-Peres limit can be achieved by our protocol with an appropriate
choice of the interaction strength. However, compared with the conventional
method for state discrimination, our approach shows the advantage of
error-tolerance by achieving a better ratio of the success probability to the
probability of error.

23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
2
The categories of this paper are: math