Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Harmonic mixing in two coupled qubits: quantum synchronization via ac
  drives   Simulating a system of two driven coupled qubits, we show that the
time-averaged probability to find one driven qubit in its ground or excited
state can be controlled by an ac drive in the second qubit. Moreover,
off-diagonal elements of the density matrix responsible for quantum coherence
can also be controlled via driving the second qubit, i.e., quantum coherence
can be enhanced by appropriate choice of the bi-harmonic signal. Such a dynamic
synchronization of two differently driven qubits has an analogy with harmonic
mixing of Brownian particles forced by two signals through a substrate.
Nevertheless, the quantum synchronization in two qubits occurs due to
multiplicative coupling of signals in the qubits rather than via a nonlinear
harmonic mixing for a classical nano-particle.

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The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
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The categories of this paper are: math
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
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The categories of this paper are: cs
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The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
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The categories of this paper are: hep-ex
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The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg