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.
Original language | English |
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Pages (from-to) | 1423-1425 |
Number of pages | 3 |
Journal | Science |
Volume | 313 |
Issue number | 5792 |
DOIs | |
State | Published - 8 Sep 2006 |
Externally published | Yes |