A. M. Dyckovsky, S. Olmschenk
We theoretically evaluate establishing remote entanglement between
distinguishable matter qubits through interference and detection of two emitted
photons. The fidelity of the entanglement operation is analyzed as a function
of the temporal and frequency mode-matching between the photons emitted from
each quantum memory. With a general analysis, we define limits on the absolute
magnitudes of temporal and frequency mode-mismatches in order to maintain
entanglement fidelities greater than 99% with two-photon detection efficiencies
greater than 90%. We apply our analysis to several selected systems of quantum
memories. Results indicate that high fidelities may be achieved in each system
using current experimental techniques, while maintaining acceptable rates of
entanglement. Thus, it might be possible to use two-photon-mediated
entanglement operations between distinguishable quantum memories to establish a
network for quantum communication and distributed quantum computation.
View original:
http://arxiv.org/abs/1202.4028
No comments:
Post a Comment