Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental observation of anomalous weak value without post-selection   Weak measurement has been shown to play important roles in the investigation
of both fundamental and practical problems. Anomalous weak values are generally
believed to be observed only when post-selection is performed, i.e, only a
particular subset of the data is considered. Here, we experimentally
demonstrated an anomalous weak value can be obtained without discarding any
data by performing a sequential weak measurement on a single-qubit system. By
controlling the blazing density of the hologram on a spatial light modulator,
the measurement strength can be conveniently controlled. Such an anomalous
phenomenon disappears when the measurement strength becomes strong. Moreover,
we find that the anomalous weak value can not be observed without
post-selection when the sequential measurement is performed on each of the
components of a two-qubit system, which confirms that the observed anomalous
weak value is based on sequential weak measurement of two noncommutative
operators.

22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg