| Publisher | HP Labs | ||
|---|---|---|---|
| Format | PDF, requires Acrobat Rdr 5 | Date added | 14 Aug 2003 |
| Topics | Nanotechnology | ||
| Downloads | 3 | ||
Previous investigations of entanglement manipulations have focused on the average properties of the outcomes and little is known about the actual probability distribution. Here we go beyond the average properties. We show that, for a pure entangled state shared between two separated persons Alice and Bob, the mathematical interchange symmetry of the Schmidt decomposition can be promoted into a physical symmetry between the actions of Alice and Bob. Consequently, the most general (multi-step two-way-communications) strategy of entanglement manipulation of a pure state is, in fact, equivalent to a strategy involving only a single (generalized) measurement by Alice followed by one-way communications of its result to Bob.
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