Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum dense coding using three qubits   We consider a situation in which two parties, Alice and Bob, share a 3-qubit
system coupled in an initial maximally entangled, GHZ state. By manipulating
locally two of the qubits, Alice can prepare any one of the eight 3-qubit GHZ
states. Thus the sending of Alice's two qubits to Bob, entails 3 bits of
classical information which can be recovered by Bob by means of a measurement
distinguishing the eight (orthonormal) GHZ states. This contrasts with the
2-qubit case, in which Alice can prepare any of the four Bell states by acting
locally only on one of the qubits.

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The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: stat
2
The categories of this paper are: math
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The categories of this paper are: eess
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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph
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The categories of this paper are: supr-con
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The categories of this paper are: dg-ga