Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-Speed Low-Crosstalk Detection of a $^{171}$Yb$^+$ Qubit using
  Superconducting Nanowire Single Photon Detectors   Qubits used in quantum computing tend to suffer from errors, either from the
qubit interacting with the environment, or from imperfect control when quantum
logic gates are applied. Fault-tolerant construction based on quantum error
correcting codes (QECC) can be used to recover from such errors. Effective
implementation of QECC requires a high fidelity readout of the ancilla qubits
from which the error syndrome can be determined, without affecting the data
qubits in which relevant quantum information is stored for processing. Here, we
present a detection scheme for \yb trapped ion qubits, where we use
superconducting nanowire single photon detectors and utilize photon
time-of-arrival statistics to improve the fidelity and speed. Qubit shuttling
allows for creating a separate detection region where an ancilla qubit can be
measured without disrupting a data qubit. We achieve an average qubit state
detection time of 11$\mu$s with a fidelity of $99.931(6)\%$. The error due to
the detection crosstalk, defined as the probability that the coherence of the
data qubit is lost due to the process of detecting an ancilla qubit, is reduced
to $\sim2\times10^{-5}$ by creating a separation of 370$\mu$m between them.

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The categories of this paper are: hep-lat
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: stat
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
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The categories of this paper are: eess
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
1
The categories of this paper are: cs