Format

Send to

Choose Destination

Links from PubMed

See comment in PubMed Commons below
Science. 2006 Sep 8;313(5792):1423-5.

Measurement of the entanglement of two superconducting qubits via state tomography.

Author information

1
Department of Physics and California Nano Systems Institute, University of California, Santa Barbara, CA 93106, USA.

Abstract

Demonstration of quantum entanglement, a key resource in quantum computation arising from a nonclassical correlation of states, requires complete measurement of all states in varying bases. By using simultaneous measurement and state tomography, we demonstrated entanglement between two solid-state qubits. Single qubit operations and capacitive coupling between two super-conducting phase qubits were used to generate a Bell-type state. Full two-qubit tomography yielded a density matrix showing an entangled state with fidelity up to 87%. Our results demonstrate a high degree of unitary control of the system, indicating that larger implementations are within reach.

PMID:
16960003
DOI:
10.1126/science.1130886
Free full text
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Support Center