Helstrom Bound for Squeezed Coherent States in Binary Communication
Evaldo M. F. Curado, Sofiane Faci, Jean‐Pierre Gazeau, Diego Noguera · Entropy · 2022
In quantum information processing, using a receiver device to differentiate between two non-orthogonal states leads to a quantum error probability. The minimum possible error is known as the Helstrom bound. In this work, we study the conditions for state discrimination using an alphabet of squeezed coherent states and compare them with conditions using the Glauber-Sudarshan, i.e., standard, coherent states.