Coherent control of macroscopic quantum states in a single-Cooper-pair box

Article Abstract:

A nanometre-scale superconducting electrode linked to a reservoir by a Josephson junction is a single-Cooper-pair box. Quantum oscillations in a single-Cooper-pair box have been observed. A short voltage pulse via a gate electrode controls the coherent quantum state evolution, and modifies the energies of the two charge states. The result superposition of the two charge states is detected by a tunnelling current.

Research, Quantum theory, Quantum mechanics, Superconductors

---

Demonstration of conditional gate operation using superconducting charge qubits

Article Abstract:

The conditional gate operation using a pair of coupled superconducting charge qubits is demonstrated. Using a pulse technique, different input states and their amplitude transformed by controlled-NOT (C-NOT) gate operation is presented.

Semiconductors and related devices, Semiconductor and Related Device Manufacturing, Solid State Devices NEC, Solid state devices, Gates (Electronics)

---

Single artificial-atom lasing

Article Abstract:

A lasing effect is shown with a single artificial atom, a Josephson-junction charge qubit, embedded in a superconducting resonator. The artificial-atom masers can be used as on-chip microwave sources and microwave amplifiers.

United States, Electronic components, not elsewhere classified, Other Electronic Component Manufacturing, Microwave Amplifiers, Josephson junction, Josephson junctions

Similar abstracts:

• Abstracts: Contribution of anthropogenic and natural sources to atmospheric methane variability. Recent patterns and mechanisms of carbon exchange by terrestrial ecosystems
• Abstracts: Development of a quantitative quality grading system for mature cow carcasses. Principles of ultrasound and measurement of intramuscular fat
• Abstracts: The energetic cost of agnostic behaviour in the velvet swimming crab, Necora(=Liocarcinus) puber (L.). How costly is fighting? Physiological effects of sustained exercise and fighting in swimming crabs, Necora puber (L.)(Brachyura, Portunidae)
• Abstracts: Essential functions of synapsins I and II in synaptic vesicle regulation. BCI10 activates the NF-kB pathway through ubiquitination of NEMO
• Abstracts: Breeding-season survival of male and female mallards in Canada's Prairie-Parklands

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.