Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-temperature operation of a silicon qubit   This study alleviates the low operating temperature constraint of Si qubits.
A qubit is a key element for quantum sensors, memories, and computers. Electron
spin in Si is a promising qubit, as it allows both long coherence times and
potential compatibility with current silicon technology. Si qubits have been
implemented using gate-defined quantum dots or shallow impurities. However,
operation of Si qubits has been restricted to milli-Kelvin temperatures, thus
limiting the application of the quantum technology. In this study, we addressed
a single deep impurity, having strong electron confinement of up to 0.3 eV,
using single-electron tunnelling transport. We also achieved qubit operation at
5-10 K through a spin-blockade effect based on the tunnelling transport via two
impurities. The deep impurity was implemented by tunnel field-effect
transistors (TFETs) instead of conventional FETs. With further improvement in
fabrication and controllability, this work presents the possibility of
operating silicon spin qubits at elevated temperatures.

19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph