Quantum sensing is an important application of Quantum Information (QI) techniques and usually entangled Qubits are used for this task. The sensor sensitivity depends on QI metrics like Shannon Mutual Information (SMI). In this work we present a mathematical model for calculating 1-Qutrit SMI and compare that with 1-Qubit SMI. Qutrit in cascade configuration is found to have higher SMI and so it a better Quantum Sensor for constant fields.
Vinod K. Mishra, "Shannon mutual information of a qutrit in cascade model," Proc. SPIE 11013, Disruptive Technologies in Information Sciences II, 110130E (Presented at SPIE Defense + Commercial Sensing: April 15, 2019; Published: 10 May 2019); https://doi.org/10.1117/12.2519350.
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