Derivation and physical interpretation of the optimum detection operators for coherent-state signals
Masao Osaki, Masashi Ban, Osamu Hirota · Physical Review A · 1996
The optimum detection operators are derived for several linearly independent signal sets. The quantum minimax strategy is applied to the M-ary coherent state signals such as binary phase shift, ternary symmetric, ternary phase shift, and quadrature phase shift. It is shown that the detection process induces a kind of quantum interference between signal quantum states and measurement states. \textcopyright{} 1996 The American Physical Society.