Production of entanglement in Raman three-level systems using feedback
Author(s)
Stevenson, Ross N.
Carvalho, Andre R. R.
Hope, Joseph J.
Griffith University Author(s)
Year published
2011
Metadata
Show full item recordAbstract
We examine the theoretical limits of the generation of entanglement in a damped coupled ion-cavity system using jump-based feedback. Using Raman transitions to produce entanglement between ground states reduces the necessary feedback bandwidth, but does not improve the overall effect of the spontaneous emission on the final entanglement. We find that the fidelity of the resulting entanglement will be limited by the asymmetries produced by vibrations in the trap, but that the concurrence remains above 0.88 for realistic ion trap sizes.We examine the theoretical limits of the generation of entanglement in a damped coupled ion-cavity system using jump-based feedback. Using Raman transitions to produce entanglement between ground states reduces the necessary feedback bandwidth, but does not improve the overall effect of the spontaneous emission on the final entanglement. We find that the fidelity of the resulting entanglement will be limited by the asymmetries produced by vibrations in the trap, but that the concurrence remains above 0.88 for realistic ion trap sizes.
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Journal Title
European Physical Journal D
Volume
61
Issue
2
Subject
Quantum Physics not elsewhere classified
Physical Sciences