01 December 2004

Adaptive Quantum Networks quantum topology » neural networks [IJTP] Our paper on adaptive quantum networks appears in this month's International Journal of Theoretical Physics. We introduce a novel model of superposed adaptive quantum networks, with considerations for high-dimensional dissipative quantum systems in both quantum computation and molecular biology. A preprint of the article is available via quant-ph 0311016.

25 November 2004

Quantum networks, quantum registers and developments in quantum computing Future Salon News summaries of recent developments in quantum information science and technology.

21 November 2004

Room-temperature Bose-Einstein condensation?

Hideyo OKUSHI, AIST Tsukuba Diamond Research Center, Japan The AIST Tsukuba Diamond Research Center has observed extremely sharp 235-nm exciton emission in fabricated single-crystal diamond film semiconductors at 300K. If the exciton lifetimes are long enough it is possible that Bose-Einstein condensation can occur in these diamond films, even at room temperature.

26 October 2004

Transfer of Nonclassical Properties from Microscopic Superpositions to Macroscopic Thermal States H. Jeong ,T.C. Ralph

Abstract quant-ph 0410210 "We have studied a more reasonable analogy of Schrodinger’s cat paradox where the virtual cat is a significantly mixed thermal state. Our discussion was motivated by the observation that a truly classical system cannot be in a pure quantum state. We have found that non-classical properties of microscopic quantum superpositions can be transferred to thermal states of large average photon numbers. The resulting states show strong quantum coherence and entanglement between severely mixed thermal states. Our examples are feasible in real physical systems and may be realized for some moderate cases using current technology. Finally, it will be an interesting future work to explore the possibility of quantum information processing using the thermal-state “superpositions” and entanglement studied in this paper."