Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fast Preparation and Detection of a Rydberg Qubit using Atomic Ensembles   We demonstrate a new approach for fast preparation, manipulation, and
collective readout of an atomic Rydberg-state qubit. By making use of Rydberg
blockade inside a small atomic ensemble, we prepare a single qubit within
3~$\mu$s with a success probability of $F_p=0.93 \pm 0.02$, rotate it, and read
out its state in $6$ $\mu s$ with a single-shot fidelity of $F_d=0.92 \pm
0.04$. The ensemble-assisted detection is $10^3$ times faster than imaging of a
single atom with the same optical resolution, and enables fast repeated
non-destructive measurement. We observe qubit coherence times of 15~$\mu$s,
much longer than the $\pi$ rotation time of 90~ns. Potential applications
ranging from faster quantum information processing in atom arrays to efficient
implementation of quantum error correction are discussed.

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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ex
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
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The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th
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The categories of this paper are: astro-ph
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The categories of this paper are: alg-geom