Revisiting Bohr's principle of complementarity with a quantum device
Jian‐Shun Tang, Yu-Long Li, Chuan‐Feng Li, Guang‐Can Guo · Physical Review A · 2013
Bohr's principle of complementarity (BPC) is the cornerstone of quantum mechanics. According to this principle, the total wavelike and particlelike information of a particle is limited by the Englert-Greenberger (EG) duality relation. Here, by introducing a quantum detecting device into the experiment, we find that the limit of the EG duality relation is exceeded because of the interference between the wave and particle properties of the photon. A generalized EG duality relation is further developed. Our work provides a generalization of BPC and gives new insights into quantum mechanics.