7,204 research outputs found
Theoretical analysis of direct violation and differential decay width in in phase space around the resonances and
We perform a theoretical study on direct violation in in phase space around the intermediate states and
. The possible interference between the amplitudes corresponding to
the two resonances is taken into account, and the relative strong phase of the
two amplitudes is treated as a free parameter. Our analysis shows that by
properly chosen the strong phase, both the violation strength and
differential decay width accommodate to the experimental results.Comment: 15 pages, 5 figure
Stability of Phase-modulated Quantum Key Distribution System
Phase drift and random fluctuation of interference visibility in double
unbalanced M-Z QKD system are observed and distinguished. It has been found
that the interference visibilities are influenced deeply by the disturbance of
transmission fiber. Theory analysis shows that the fluctuation is derived from
the envioronmental disturbance on polarization characteristic of fiber,
especially including transmission fiber. Finally, stability conditions of
one-way anti-disturbed M-Z QKD system are given out, which provides a
theoretical guide in pragmatic anti-disturbed QKD.Comment: 9 pages, 3 figue
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