Anomalies of Wave-Particle Duality due to Translational-Internal   Entanglement
  We predict that if internal and momentum states of an interfering object are correlated (entangled), then by measuring its internal state we may infer both path (corpuscular) and phase (wavelike) information with much higher precision than for objects lacking such entanglement. We thereby partly circumvent the standard complementarity constraints of which-path detection. 
Michal Kolar, Tomas Opatrny, Nir Bar-Gill, Gershon Kurizki