Timeline for How to know whether or not we have an X-cut or Z-cut without information on the boundaries
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
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| Jan 20, 2022 at 16:06 | comment | added | Craig Gidney | When you write down the Pauli products of the logical X and Z observables, there are no terms on data qubits outside the diagrammed area. | |
| Jan 20, 2022 at 10:51 | comment | added | Marco Fellous-Asiani | For your second part: "Ideally you can rework those questions into things like 'how many logical qubits whose observables don't leave this area are here'". I don't get what this sentence means. What do you mean by observable don't leave this area? | |
| Jan 20, 2022 at 10:50 | comment | added | Marco Fellous-Asiani | Thank you for your answer. While I understand the philosophy behind your answer I do not completely see what you mean. When you say "the boundaries are unspecified but far enough way to be irrelevant", I don't get as the fact the boundaries are far or not does not really matter: if they do not respect the "good" behavior then we would'nt have created a logical qubit (and then from my understanding it cannot really be an X or Z cut). The whole purpose of the part associated to the graph is to create an actual logical qubit. | |
| Jan 19, 2022 at 22:34 | history | answered | Craig Gidney | CC BY-SA 4.0 |