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Protocol for unambiguous quantum state discrimination using quantum
coherence
(pp931-944)
Sunho
Kim, Longsuo Li, Asutosh Kumar, Chunhe Xiong, Sreetama Das, Ujjwal Sen,
Arun Kumar Pati, and Junde Wu
doi:
https://doi.org/10.26421/QIC21.11-12-2
Abstracts:
Roa
et al.
showed that quantum state discrimination between two
nonorthogonal
quantum states does not require quantum entanglement but quantum
dissonance only. We find that quantum coherence can also be utilized for
unambiguous quantum state discrimination. We present a protocol and
quantify the required coherence for this task. We discuss the optimal
unambiguous quantum state discrimination strategy in some cases. In
particular, our work illustrates an avenue to find the optimal strategy
for discriminating two
nonorthogonal
quantum states by measuring quantum coherence.
Key words:
Unambiguous
quantum state discrimination(UQSD),
Quantum coherence |
