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Science 8 September 2006:
Vol. 313. no. 5792, p. 1360
DOI: 10.1126/science.313.5792.1360e
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Entanglement between qubits is a necessary requirement for any proposed quantum computer architectures, and solid-state implementations, particularly superconducting qubits, have the added advantage of being compatible with existing fabrication techniques. To date, the behavior and manipulation of single superconductor-based qubits have shown promising results. Steffen et al. (p. 1423; see the Perspective by Siddiqi and Clarke) use state tomography to demonstrate that entanglement between two superconducting phase qubits is possible. These new results put solid-state qubits on the roadmap as a basis for a scalable quantum computer.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)