Operational interpretation of the Choi rank through exclusion tasks
Benjamin Stratton, Chung-Yun Hsieh, and Paul Skrzypczyk
Phys. Rev. A 110, L050601 (2024) - Published 13 November, 2024
By identifying what messages were not encoded, rather than what messages were encoded, in a quantum state, quantum state exclusion can bring certainty to the task of communicating classical information via noisy quantum states. Here, this notion is used to define a task through which the Choi rank of a quantum channel can be given an operational interpretation.
Uncovering measurement-induced entanglement via directional adaptive dynamics and incomplete information
Yu-Xin Wang (王语馨), Alireza Seif, and Aashish A. Clerk
Phys. Rev. A 110, L050602 (2024) - Published 19 November, 2024
The authors propose a general recipe for mapping measurement-induced conditional entanglement dynamics to a corresponding measurement- and postselection-free dissipative system, utilizing directional interactions between the original system and a set of auxiliary register modes. They further apply this approach to deterministically capture transitions in measurement-induced entanglement dynamics, due to a competition between entangling measurements and local unitaries, in both single-mode and many-body bosonic lattices.
Quantum illumination with high-dimensional Bell states
Armanpreet Pannu, Amr S. Helmy, and Hesham El Gamal
Phys. Rev. A 110, L050603 (2024) - Published 25 November, 2024
This work explores a protocol for quantum illumination using high-dimensional Bell states, showing that discrete-variable states can be effective in detecting targets across different noise conditions. The findings suggest that Bell states may serve as a viable alternative to continuous-variable states in quantum sensing, expanding the possibilities for entanglement-enhanced applications.
