Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Recovery algorithms for Clifford Hayden-Preskill problem   The Hayden-Preskill recovery problem has provided useful insights on physics
of quantum black holes as well as dynamics in quantum many-body systems from
the viewpoint of quantum error-correcting codes. While finding an efficient
universal information recovery procedure seems challenging, some interesting
classes of dynamical systems may admit efficient recovery algorithms. Here we
present simple deterministic recovery algorithms for the Hayden-Preskill
problem when its unitary dynamics is given by a Clifford operator. The
algorithms utilize generalized Bell measurements and apply feedback operations
based on the measurement result. The recovery fidelity and the necessary
feedback operation can be found by analyzing the operator growth. These
algorithms can also serve as a decoding strategy for entanglement-assisted
quantum error-correcting codes (EAQECCs). We also present a version of recovery
algorithms with local Pauli basis measurements, which can be viewed as a
many-body generalization of quantum teleportation with fault-tolerance. A
certain relation between out-of-time order correlation functions and discrete
Wigner functions is also discussed, which may be of independent interest.

15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg