Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dispersive readout scheme for a Josephson phase qubit   We present experimental results on a dispersive scheme for reading out a
Josephson phase qubit. A capacitively shunted dc-SQUID is used as a nonlinear
resonator which is inductively coupled to the qubit. We detect the flux state
of the qubit by measuring the amplitude and phase of a microwave pulse
reflected from the SQUID resonator. By this low-dissipative method, we reduce
the qubit state measurement time down to 25 microseconds, which is much faster
than using the conventional readout performed by switching the SQUID to its
non-zero dc voltage state. The demonstrated readout scheme allows for reading
out multiple qubits using a single microwave line by employing
frequency-division multiplexing.

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The categories of this paper are: adap-org
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The categories of this paper are: q-fin
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The categories of this paper are: econ
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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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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: chao-dyn
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The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
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The categories of this paper are: cs