Causal orders, quantum circuits and spacetime: distinguishing between definite and superposed causal orders
We study the notion of causal orders for the cases of (classical and quantum) circuits and spacetime events. We show that every circuit can be immersed into a classical spacetime, preserving the compatibility between the two causal structures. Using the process matrix formalism, we analyse the reali...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
2020-05-01
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| Series: | Quantum |
| Online Access: | https://quantum-journal.org/papers/q-2020-05-28-275/pdf/ |