http://www.cnr.it/ontology/cnr/individuo/prodotto/ID19251
Demonstration of two-qubit algorithms with a superconducting quantum processor (Articolo in rivista)
- Type
- Label
- Demonstration of two-qubit algorithms with a superconducting quantum processor (Articolo in rivista) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1038/nature08121 (literal)
- Alternative label
Di Carlo L., Chow J.M. , Gambetta J.M., Bishop L., Schuster D.I., Majer J., Blais A., Frunzio L., Girvin S.M., and Schoelkopf R.J (2009)
Demonstration of two-qubit algorithms with a superconducting quantum processor
in Nature (Lond.); NATURE PUBLISHING GROUP,, LONDON (Regno Unito)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Di Carlo L., Chow J.M. , Gambetta J.M., Bishop L., Schuster D.I., Majer J., Blais A., Frunzio L., Girvin S.M., and Schoelkopf R.J (literal)
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- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Departments of Physics and Applied Physics, Yale University, New Haven, Connecticut 06511, USA. (literal)
- Titolo
- Demonstration of two-qubit algorithms with a superconducting quantum processor (literal)
- Abstract
- Quantumcomputers,which harness the superposition andentanglement
of physical states, could outperform their classical counterparts
in solving problems with technological impact--such as
factoring large numbers and searching databases. A quantumprocessor
executes algorithms by applying a programmable sequence of
gates to an initialized register of qubits, which coherently evolves
into a final state containing the result of the computation. Building a
quantumprocessor is challenging because of the need tomeet simultaneously
requirements that are in conflict: state preparation, long
coherence times, universal gate operations and qubit readout.
Processors based on a few qubits have been demonstrated using
nuclear magnetic resonance, cold ion trap and optical systems,
but a solid-state realization has remained an outstanding challenge.
Here we demonstrate a two-qubit superconducting processor and
the implementation of the Grover search and Deutsch-Jozsa
quantum algorithms. We use a two-qubit interaction, tunable in
strength by two orders of magnitude on nanosecond timescales,
which is mediated by a cavity bus in a circuit quantum electrodynamics
architecture. This interaction allows the generation of
highly entangled states with concurrence up to 94 per cent.
Although this processor constitutes an important step in quantum
computing with integrated circuits, continuing efforts to increase
qubit coherence times, gate performance and register size will be
required to fulfil the promise of a scalable technology. (literal)
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