Quantum causality extends the conventional notion of the fixed causal structure by allowing channels and operations to act in an indefinite causal order. The importance of such an indefinite causal order ranges from the foundational—e.g., towards a theory of quantum gravity—to the applied—e.g., for advantages in communication and computation. In this review, the authors will walk through the basic theory of indefinite causal order and focus on experiments that rely on a physically realizable indefinite causal ordered process—the quantum switch.
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Review Article| September 25 2020
Experiments on quantum causality
Special Collection: Optical Micromanipulation of Quantum Systems
K. Goswami ;
K. Goswami, J. Romero; Experiments on quantum causality. AVS Quantum Sci. 1 October 2020; 2 (3): 037101. https://doi.org/10.1116/5.0010747
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