TY - JOUR
T1 - Initial conditions and entanglement sudden death
AU - Qian, Xiao Feng
AU - Eberly, J. H.
PY - 2012/10/1
Y1 - 2012/10/1
N2 - We report results bearing on the behavior of non-local decoherence and its potential for being managed or even controlled. The decoherence process known as entanglement sudden death (ESD) can drive prepared entanglement to zero at the same time that local coherences and fidelity remain non-zero. For a generic ESD-susceptible Bell superposition state, we provide rules restricting the occurrence and timing of ESD, amounting to management tools over a continuous variation of initial conditions. These depend on only three parameters: initial purity, entanglement and excitation. Knowledge or control of initial phases is not needed.
AB - We report results bearing on the behavior of non-local decoherence and its potential for being managed or even controlled. The decoherence process known as entanglement sudden death (ESD) can drive prepared entanglement to zero at the same time that local coherences and fidelity remain non-zero. For a generic ESD-susceptible Bell superposition state, we provide rules restricting the occurrence and timing of ESD, amounting to management tools over a continuous variation of initial conditions. These depend on only three parameters: initial purity, entanglement and excitation. Knowledge or control of initial phases is not needed.
KW - Entanglement dynamics
KW - Entanglement sudden death control
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U2 - 10.1016/j.physleta.2012.08.007
DO - 10.1016/j.physleta.2012.08.007
M3 - Article
AN - SCOPUS:84868158867
SN - 0375-9601
VL - 376
SP - 2931
EP - 2934
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 45
ER -