dorsal/arxiv
View SchemaA Scalable Architecture for Coherence-Preserving Qubits
| Authors | Yaakov S. Weinstein, C. Stephen Hellberg |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0606157 |
| URL | https://arxiv.org/abs/quant-ph/0606157 |
| DOI | 10.1103/PhysRevLett.98.110501 |
| Journal | Phys. Rev. Lett. 98, 110501 (2007). |
Abstract
We propose scalable architectures for the coherence-preserving qubits introduced by Bacon, Brown, and Whaley [Phys. Rev. Lett. {\bf 87}, 247902 (2001)]. These architectures employ extra qubits providing additional degrees of freedom to the system. We show that these extra degrees of freedom can be used to counter errors in coupling strength within the coherence-preserving qubit and to combat interactions with environmental qubits. The presented architectures incorporate experimentally viable methods for inter-logical-qubit coupling and can implement a controlled phase gate via three simultaneous Heisenberg exchange operations. The extra qubits also provide flexibility in the arrangement of the physical qubits. Specifically, all physical qubits of a coherent-preserving qubit lattice can be placed in two spatial dimensions. Such an arrangement allows for universal cluster state computation.
{
"annotation_id": "62a5c421-8ab8-4250-bd3c-1b219c7bec38",
"date_created": "2026-03-02T18:02:27.690000Z",
"date_modified": "2026-03-02T18:02:27.690000Z",
"file_hash": "3558d603d6560f7ff044b77202b2f66c2e68ced3c1a8c9fbfcf812b33d9f5798",
"private": false,
"record": {
"abstract": "We propose scalable architectures for the coherence-preserving qubits\nintroduced by Bacon, Brown, and Whaley [Phys. Rev. Lett. {\\bf 87}, 247902\n(2001)]. These architectures employ extra qubits providing additional degrees\nof freedom to the system. We show that these extra degrees of freedom can be\nused to counter errors in coupling strength within the coherence-preserving\nqubit and to combat interactions with environmental qubits. The presented\narchitectures incorporate experimentally viable methods for inter-logical-qubit\ncoupling and can implement a controlled phase gate via three simultaneous\nHeisenberg exchange operations. The extra qubits also provide flexibility in\nthe arrangement of the physical qubits. Specifically, all physical qubits of a\ncoherent-preserving qubit lattice can be placed in two spatial dimensions. Such\nan arrangement allows for universal cluster state computation.",
"arxiv_id": "quant-ph/0606157",
"authors": [
"Yaakov S. Weinstein",
"C. Stephen Hellberg"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.98.110501",
"journal_ref": "Phys. Rev. Lett. 98, 110501 (2007).",
"title": "A Scalable Architecture for Coherence-Preserving Qubits",
"url": "https://arxiv.org/abs/quant-ph/0606157"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "812496df-a088-4fbc-9e61-575eac7272da",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}