Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-tone pulse sequences and robust two-tone shaped pulses for three
  silicon spin qubits with always-on exchange   Quantum computation requires high-fidelity single-qubit and two-qubit gates
on a scalable platform. Silicon spin qubits are a promising platform toward
realization of this goal. In this paper we show how to perform single-qubit and
CZ gates in a linear chain of three spin qubits with always-on exchange
coupling, which is relevant for certain dot- and donor-based silicon devices.
We also show how to make the CZ gate robust against both charge noise and pulse
length error using a two-tone pulse shaping method. The robust pulse maintains
a fidelity of 99.99% at 3.5% fluctuations in exchange or pulse amplitude, which
is an improvement over the uncorrected pulses where this fidelity can only be
maintained for fluctuations in exchange up to 2% or up to 0.2% in amplitude.

5
The categories of this paper are: gr-qc
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The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
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The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
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The categories of this paper are: hep-th
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
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The categories of this paper are: astro-ph