Quantum-coherence quantifiers based on the Tsallis relative $\alpha$-entropies

Understand

The concept of coherence is one of cornerstones in physics.

• The development of quantum information science has lead to renewed interest in properly approaching the coherence at the quantum level.
• Various measures could be proposed to quantify coherence of a quantum state with respect to the prescribed orthonormal basis.
• To be a proper measure of coherence, each candidate should enjoy certain properties.