Bound Entanglement Can Be Activated
Abstract
Bound entanglement is the noisy entanglement which cannot be distilled to a singlet form. Thus it cannot be used alone for quantum communication purposes. Here we show that, nevertheless, the bound entanglement can be, in a sense, pumped into a single pair of free entangled particles. It allows for teleportation via the pair with the fidelity impossible to achieve without support of bound entanglement.
- Publication:
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Physical Review Letters
- Pub Date:
- February 1999
- DOI:
- 10.1103/PhysRevLett.82.1056
- arXiv:
- arXiv:quant-ph/9806058
- Bibcode:
- 1999PhRvL..82.1056H
- Keywords:
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- Quantum Physics
- E-Print:
- RevTeX, 4 pages