Precise manipulation of individual charge carriers in nanoelectronic circuits underpins
practical applications of their most basic quantum property—the universality and invariance …

The electric current, voltage, and resistance standards are the most important standards
related to electricity and magnetism. Of these three standards, only the ampere, which is the …

Molecular electronics originally proposed that small molecules sandwiched between
electrodes would accomplish electronic functions and enable ultimate scaling to be reached …

High-speed and high-accuracy pumping of a single electron is crucial for realizing an
accurate current source, which is a promising candidate for a quantum current standard …

We report on high-accuracy measurements of quantized current, sourced by a tunable-
barrier single-electron pump at frequencies f up to 1 GHz. The measurements were …

We report on characterizations of single-electron pumps at the highest accuracy level,
enabled by improvements of the small-current measurement technique. With these …

We review recent precision measurements on semiconductor tunable-barrier electron
pumps operating in a ratchet mode. Seven studies on five different designs of pumps have …

We report the single-electron tunneling behaviour of a silicon nanobridge where the
effective island is a single As dopant atom. The device is a gated silicon nanobridge with a …

Single-electron pumps based on semiconductor quantum dots are promising candidates for
the emerging quantum standard of electrical current. They can transfer discrete charges with …

An advanced understanding of ultrafast coherent electron dynamics is necessary for the
application of submicrometre devices under a non-equilibrium drive to quantum technology …