Quantum teleportation implies symmetry-protected topological order
Public Deposited- Abstract
We constrain a broad class of teleportation protocols using insights from locality. In the ``standard'' teleportation protocols we consider, all outcome-dependent unitaries are Pauli operators conditioned on linear functions of the measurement outcomes. We find that all such protocols involve preparing a ``resource state'' exhibiting symmetry-protected topological (SPT) order with Abelian protecting symmetry . The logical states are teleported between the edges of the chain by measuring the corresponding string order parameters in the bulk and applying outcome-dependent Paulis. Hence, this single class of nontrivial SPT states is both necessary and sufficient for the standard teleportation of qubits. We illustrate this result with several examples, including the cluster state, variants thereof, and a nonstabilizer hypergraph state.
- Creator
- Date Issued
- 2024
- Academic Affiliation
- Journal Title
- Journal Volume
- 8
- Last Modified
- 2024-10-30
- Resource Type
- Rights Statement
- DOI
- ISSN
- 2521-327X
- Language
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q-2024-10-10-1499.pdf | 2024-10-30 | Public | Download |