Authors
Abstract
In this paper, we reproduce the harmonic oscillator bipartite coherent states with imperfect cloning of coherent states. We show that if these entangled coherent states are embedded in a vacuum environment, their entanglement is degraded but not totally lost . Also, the optimal fidelity of these states is worked out for investigating their teleportation
Keywords
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2. E Andersson, M Curty, and I Jex, Physical Review A 74 (2006) 022304
3. M Le Ballac, “A Short Introduction to Quantum Information and Quantum Computation”, Cambridge University press (2006).
4. C H Bennett, G Brassard, C Crépeau, R Jozsa, A Peres, and W K Wootters, Phys. Rev. Lett. 70 (1993) 1895.
5. A Barenco, D Dutch, A Ekert, and R Jozsa, Phys. Rev. Lett. 74 (1995) 4085.
6. BC Sanders, Journal of Physics A: Mathematical and Theoretical 45 (24) 244002.
7. K Fujii, “Coherent States and some Topics in Quantum Information Theory”, quant-ph/0207178
8. S J D Phoenix, Phys. Rev. A 41 (1990) 5132.
9. H Jeong, M S Kim, and J Lee1, Physical Review A 64 (2001) 052308
10. J Lee and M S Kim, Phys. Rev. Lett. 84 (2000) 4236; J Lee, M S Kim, Y –J Park, and S Lee, J. Mod. Opt. 47 (2000) 2151
11. R Horodecki, P Horodecki, and M Horodecki, Phys. Rev. A 60 (1999) 1888.
12. S Bose and V Vedral, Phys. Rev. A 61 (2000) 040101.
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