Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generation of discord through a remote joint continuous variable
  measurement   In quantum mechanics, continuously measuring an observable steers the system
into one eigenstate of that observable. This property has interesting and
useful consequences when the observable is a joint property of two remotely
separated qubits. In particular, if the measurement of the two-qubit joint
observable is performed in a way that is blind to single-qubit information,
quantum back-action generates correlation of the discord type even if the
measurement is weak and inefficient. We demonstrate the ability to generate
these quantum correlations in a circuit-QED setup by performing a weak joint
readout of two remote, non-interacting, superconducting transmon qubits using
the two non-degenerate modes of a Josephson Parametric Converter (JPC).
Single-qubit information is erased from the output in the limit of large gain
and with properly tailored cavity drive pulses. Our results of the measurement
of discord are in quantitative agreement with theoretical predictions, and
demonstrate the utility of the JPC as a which-qubit information eraser.

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The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
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The categories of this paper are: eess
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat