2011/08/13 by Koji Azuma, Go Kato · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physreva.85.060303
5 pages, 1 figure
arxiv created 2011/08/13 · arxiv updated 2015/05/29
We derive an optimal bound for arbitrary entanglement manipulation based on the transmission of a pulse in coherent states over a lossy channel followed by local operations and unlimited classical communication (LOCC). This stands on a theorem to reduce LOCC via a local unital qubit channel to local filtering. We also present an optimal protocol based on beam splitters and a quantum nondemolition (QND) measurement on photons. Even if we replace the QND measurement with photon detectors, the protocol outperforms known entanglement generation schemes.