Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A universal quantum rewinding protocol with an arbitrarily high
  probability of success   We present a universal mechanism that, acting on any target qubit, propagates
it to the state it had T time units before the experiment started. This
protocol works by setting the target on a superposition of flight paths, where
it is acted on by uncharacterized, but repeatable, quantum operations.
Independently of the effect of each of these individual operations on the
target, the successful interference of the paths causes it to leap to its past
state. We prove that, for generic interaction effects, the system will reach
the desired state with probability 1 after some finite number of steps.

5
The categories of this paper are: gr-qc
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The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
19
The categories of this paper are: eess
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The categories of this paper are: alg-geom
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The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
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The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: cs
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The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th