Quantum Entanglement in Time
Caslav Brukner, Samuel Taylor, Sancho Cheung, Vlatko Vedral
TL;DR
This paper introduces the concept of entanglement in time by deriving temporal Bell inequalities, showing quantum mechanics violates them, and exploring implications for quantum physics and potential tasks beyond classical capabilities.
Contribution
It presents the first formalization of entanglement in time through temporal Bell inequalities and demonstrates quantum violation, expanding the understanding of quantum correlations.
Findings
Quantum mechanics violates temporal Bell inequalities.
Entanglement in time can be introduced in quantum physics.
Potential for new quantum tasks beyond classical limits.
Abstract
The temporal Bell inequalities are derived from the assumptions of realism and locality in time. It is shown that quantum mechanics violates these inequalities and thus is in conflict with the two assumptions. This can be used for performing certain tasks that are not possible classically. Our results open up a possibility for introducing the notion of entanglement in time in quantum physics.
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Taxonomy
TopicsQuantum Mechanics and Applications · Quantum Information and Cryptography · Quantum Computing Algorithms and Architecture