Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mitigation of Crosstalk Errors in a Quantum Measurement and Its
  Applications   In practical realizations of quantum information processing, there may exist
noise in a measurement readout stage where errors appear not only on individual
qubits but also on multiple ones collectively, the latter of which is called
crosstalk errors. In this work, we present a framework for mitigating
measurement errors, for both individual and crosstalk errors. The mitigation
protocol consists of two steps, firstly quantum pre-processing, which applies
local unitary transformations before a measurement, and classical
post-processing that manipulates measurement outcomes to recover noiseless
data. The local unitaries in quantum pre-processing can be constructed by
characterizing a noisy measurement via quantum detector tomography. We show
that the mitigation protocol can maintain a measurement error on multiple
qubits as much as that in a single-qubit readout, i.e., the error rates for
measurements on multiple qubits are suppressed up to a percent level. The
mitigation protocol is realized in IBMQ Sydney and applied to the certification
of entanglement-generating circuits. It is demonstrated that the mitigation
protocol can successfully eliminate measurement errors so that
entanglement-generation circuits can be efficiently certified.

23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics