dorsal/arxiv
View SchemaUniversal Leakage Elimination
| Authors | Mark S. Byrd, Daniel A. Lidar, Lian-Ao Wu, Paolo Zanardi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0409049 |
| URL | https://arxiv.org/abs/quant-ph/0409049 |
| DOI | 10.1103/PhysRevA.71.052301 |
| Journal | Phys. Rev. A 71, 052301 (2005) |
Abstract
``Leakage'' errors are particularly serious errors which couple states within a code subspace to states outside of that subspace thus destroying the error protection benefit afforded by an encoded state. We generalize an earlier method for producing leakage elimination decoupling operations and examine the effects of the leakage eliminating operations on decoherence-free or noiseless subsystems which encode one logical, or protected qubit into three or four qubits. We find that by eliminating the large class of leakage errors, under some circumstances, we can create the conditions for a decoherence free evolution. In other cases we identify a combination decoherence-free and quantum error correcting code which could eliminate errors in solid-state qubits with anisotropic exchange interaction Hamiltonians and enable universal quantum computing with only these interactions.
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"abstract": "``Leakage\u0027\u0027 errors are particularly serious errors which couple states within\na code subspace to states outside of that subspace thus destroying the error\nprotection benefit afforded by an encoded state. We generalize an earlier\nmethod for producing leakage elimination decoupling operations and examine the\neffects of the leakage eliminating operations on decoherence-free or noiseless\nsubsystems which encode one logical, or protected qubit into three or four\nqubits. We find that by eliminating the large class of leakage errors, under\nsome circumstances, we can create the conditions for a decoherence free\nevolution. In other cases we identify a combination decoherence-free and\nquantum error correcting code which could eliminate errors in solid-state\nqubits with anisotropic exchange interaction Hamiltonians and enable universal\nquantum computing with only these interactions.",
"arxiv_id": "quant-ph/0409049",
"authors": [
"Mark S. Byrd",
"Daniel A. Lidar",
"Lian-Ao Wu",
"Paolo Zanardi"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.71.052301",
"journal_ref": "Phys. Rev. A 71, 052301 (2005)",
"title": "Universal Leakage Elimination",
"url": "https://arxiv.org/abs/quant-ph/0409049"
},
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