dorsal/arxiv
View SchemaCreating Decoherence-Free Subspaces with Strong and Fast Pulses
| Authors | L. -A. Wu, D. A. Lidar |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0112144 |
| URL | https://arxiv.org/abs/quant-ph/0112144 |
| DOI | 10.1103/PhysRevLett.88.207902 |
| Journal | Phys. Rev. Lett. 88, 207902 (2002) |
Abstract
A decoherence-free subspace (DFS) isolates quantum information from deleterious environmental interactions. We give explicit sequences of strong and fast (``bang-bang'', BB) pulses that create the conditions allowing for the existence of DFSs that support scalable, universal quantum computation. One such example is the creation of the conditions for collective decoherence, wherein all system particles are coupled in an identical manner to their environment. The BB pulses needed for this are generated using only the Heisenberg exchange interaction. In conjunction with previous results, this shows that Heisenberg exchange is all by itself an enabler of universal fault tolerant quantum computation on DFSs.
{
"annotation_id": "ffd309de-c7e5-4075-ada6-6de8904f463e",
"date_created": "2026-03-02T18:01:49.213000Z",
"date_modified": "2026-03-02T18:01:49.213000Z",
"file_hash": "a9fcdedb00e412353b200f8c9c952cf8915f0dded710a9c78e4b1e4929aa0a3a",
"private": false,
"record": {
"abstract": "A decoherence-free subspace (DFS) isolates quantum information from\ndeleterious environmental interactions. We give explicit sequences of strong\nand fast (``bang-bang\u0027\u0027, BB) pulses that create the conditions allowing for the\nexistence of DFSs that support scalable, universal quantum computation. One\nsuch example is the creation of the conditions for collective decoherence,\nwherein all system particles are coupled in an identical manner to their\nenvironment. The BB pulses needed for this are generated using only the\nHeisenberg exchange interaction. In conjunction with previous results, this\nshows that Heisenberg exchange is all by itself an enabler of universal fault\ntolerant quantum computation on DFSs.",
"arxiv_id": "quant-ph/0112144",
"authors": [
"L. -A. Wu",
"D. A. Lidar"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.88.207902",
"journal_ref": "Phys. Rev. Lett. 88, 207902 (2002)",
"title": "Creating Decoherence-Free Subspaces with Strong and Fast Pulses",
"url": "https://arxiv.org/abs/quant-ph/0112144"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "758f2bb6-15a3-488c-9f5d-c4fe2f3035a5",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}