Quantum bus

A quantum bus is a device which can be used to store or transfer information between independent qubits in a quantum computer, or combine two qubits into a superposition. The concept was first demonstrated by researchers at the Schoelkopf lab at Yale in papers published in September 20 and September 27 issues of Nature in 2007.

Prior to the publication of these papers, the quantum bus had been described by scientists at NIST as one of the possible cornerstone building blocks in quantum computer architecture. [http://www.newsfactor.com/perl/story/20485.html]

References

* G.K. Brennen, D. Song, C.J. Williams, "Quantum-computer architecture using nonlocal interactions", Physical Review A no. 67 p.050302(R) (2003) [http://arxiv.org/abs/quant-ph/0301012v2] .
* All Aboard the Quantum 'Bus.' Photonics.com website, [http://www.photonics.com/content/news/2007/September/27/89134.aspx] .
* J. Majer, J. M. Chow, et al. "Coupling Superconducting Qubits via a Cavity Bus", Nature (London) no. 449 p. 443 (2007), preprint available [http://arxiv.org/abs/0709.2135v1] .
* A. A. Houck, D. I. Schuster, et al. "Generating Single Microwave Photons in a Circuit", Nature (London) no. 449 p. 328 (2007), preprint available [http://arxiv.org/abs/cond-mat/0702648v1] .
* M. A. Sillanpää, J. I. Park, R. W. Simmonds. "Coherent quantum state storage and transfer between two phase qubits via a resonant cavity", Nature (London) no. 449 p. 438 (2007)