  Complementary metal-oxide semiconductor (CMOS) technology has radically
reshaped the world by taking humanity to the digital age. Cramming more
transistors into the same physical space has enabled an exponential increase in
computational performance, a strategy that has been recently hampered by the
increasing complexity and cost of miniaturization. To continue achieving
significant gains in computing performance, new computing paradigms, such as
quantum computing, must be developed. However, finding the optimal physical
system to process quantum information, and scale it up to the large number of
qubits necessary to build a general-purpose quantum computer, remains a
significant challenge. Recent breakthroughs in nanodevice engineering have
shown that qubits can now be manufactured in a similar fashion to silicon
field-effect transistors, opening an opportunity to leverage the know-how of
the CMOS industry to address the scaling challenge. In this article, we focus
on the analysis of the scaling prospects of quantum computing systems based on
CMOS technology.
