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Evidence for Bound Entangled States with Negative Partial Transpose
David P. DiVincenzo, Peter W. Shor, John A. Smolin +2
We exhibit a two-parameter family of bipartite mixed states , in a Hilbert space, which are negative under partial transposition (NPT), but for which we conjec…
Unextendible Product Bases, Uncompletable Product Bases and Bound Entanglement
David P. DiVincenzo, Tal Mor, Peter W. Shor +2
We report new results and generalizations of our work on unextendible product bases (UPB), uncompletable product bases and bound entanglement. We present a new construction for bou…
Electron Spin Resonance Transistors for Quantum Computing in Silicon-Germanium Heterostructures
Rutger Vrijen, Eli Yablonovitch, Kang Wang +5
We apply the full power of modern electronic band structure engineering and epitaxial heterostructures to design a transistor that can sense and control a single donor electron spi…
Quantum information processing using quantum dot spins and cavity-QED
A. Imamoglu, D. D. Awschalom, G. Burkard +4
The electronic spin degrees of freedom in semiconductors typically have decoherence times that are several orders of magnitude longer than other relevant timescales. A solid-state…
Optimal Decompositions of Barely Separable States
David P. DiVincenzo, Barbara M. Terhal, Ashish V. Thapliyal
Two families of bipartite mixed quantum states are studied for which it is proved that the number of members in the optimal-decomposition ensemble --- the ensemble realizing the en…