Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement Distillation using the Exchange Interaction   A key ingredient of quantum repeaters is entanglement distillation, i.e., the
generation of high-fidelity entangled qubits from a larger set of pairs with
lower fidelity. Here, we present entanglement distillation protocols based on
qubit couplings that originate from exchange interaction. First, we make use of
asymmetric bilateral two-qubit operations generated from anisotropic exchange
interaction and show how to distill entanglement using two input pairs. We
furthermore consider the case of three input pairs coupled through isotropic
exchange. Here, we characterize a set of protocols which are optimizing the
tradeoff between the fidelity increase and the probability of a successful run.

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The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
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The categories of this paper are: eess
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph