A nanometre-scale superconducting electrode connected to a reservoir via a Josephson
junction constitutes an artificial two-level electronic system: a single-Cooper-pair box. The …

Photonic cavities that strongly confine light are finding applications in many areas of physics
and engineering, including coherent electron–photon interactions, ultra-small filters,, low …

A metallic electrode connected to electron reservoirs by tunnel junctions has a series of
charge states corresponding to the number of excess electrons in the electrode. In contrast …

Following the demonstration of coherent control of the quantum state of a superconducting
charge qubit, a variety of qubits based on Josephson junctions have been implemented …

A scanning tunnelling microscope can image surfaces down to the atomic scale. Its very
high resolution is caused by its local probing mechanism: a tunnel current which flows …

A practical quantum computer, if built, would consist of a set of coupled two-level quantum
systems (qubits). Among the variety of qubits implemented, solid-state qubits are of …

Quantum mechanics demands that the act of measurement must affect the measured object.
When a linear amplifier is used to continuously monitor the position of an object, the …

The field of solid-state quantum computation is expanding rapidly initiated by our original
charge qubit demonstrations. Various types of solid-state qubits are being studied, and their …

We present experimental current-voltage (IV) measurements on an Al-Al 2 O 3-Al single-
electron tunneling transistor in the superconducting state. We observe a variety of features …

Spectroscopic measurements with increasingly higher time resolution are generally thought
to require increasingly shorter laser pulses, as illustrated by the recent monitoring of the …