In a collision model, replacing the coherent partial-swap with an incoherent controlled-swap preserves homogenization but suppresses transient memory effects and synchronization.
Classical Limits and Contextuality in a Scenario of Multiple Observers
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abstract
Contextuality is regarded as a non-classical feature, challenging our everyday intuition; quantum contextuality is currently seen as a resource for many applications in quantum computation, being responsible for quantum advantage over classical analogs. In our work, we adapt the $N$-cycle scenarios with odd $N$ to multiple independent observers which measure the system sequentially. We analyze the possibility of violating the inequalities as a function of the number of observers and under different measurement protocols. We then reinterpret the results as an open quantum system where the environment is divided into fragments. In this context, the results show the emergence of non-contextuality in such a setting, bringing together the quantum behavior to our classical experience. We then compare such emergence of non-contextuality with that of objectivity under the `Environment as a Witness paradigm'.
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quant-ph 1years
2025 1verdicts
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Transient Dynamics and Homogenization in Incoherent Collision Models
In a collision model, replacing the coherent partial-swap with an incoherent controlled-swap preserves homogenization but suppresses transient memory effects and synchronization.