dorsal/arxiv
View SchemaQuantum Error Correction of a Qubit Loss in an Addressable Atomic System
| Authors | Jiri Vala, K. Birgitta Whaley, David S. Weiss |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0510021 |
| URL | https://arxiv.org/abs/quant-ph/0510021 |
| DOI | 10.1103/PhysRevA.72.052318 |
Abstract
We present a scheme for correcting qubit loss error while quantum computing with neutral atoms in an addressable optical lattice. The qubit loss is first detected using a quantum non-demolition measurement and then transformed into a standard qubit error by inserting a new atom in the vacated lattice site. The logical qubit, encoded here into four physical qubits with the Grassl-Beth-Pellizzari code, is reconstructed via a sequence of one projective measurement, two single-qubit gates, and three controlled-NOT operations. No ancillary qubits are required. Both quantum non-demolition and projective measurements are implemented using a cavity QED system which can also detect a general leakage error and thus allow qubit loss to be corrected within the same framework. The scheme can also be applied in quantum computation with trapped ions or with photons.
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"abstract": "We present a scheme for correcting qubit loss error while quantum computing\nwith neutral atoms in an addressable optical lattice. The qubit loss is first\ndetected using a quantum non-demolition measurement and then transformed into a\nstandard qubit error by inserting a new atom in the vacated lattice site. The\nlogical qubit, encoded here into four physical qubits with the\nGrassl-Beth-Pellizzari code, is reconstructed via a sequence of one projective\nmeasurement, two single-qubit gates, and three controlled-NOT operations. No\nancillary qubits are required. Both quantum non-demolition and projective\nmeasurements are implemented using a cavity QED system which can also detect a\ngeneral leakage error and thus allow qubit loss to be corrected within the same\nframework. The scheme can also be applied in quantum computation with trapped\nions or with photons.",
"arxiv_id": "quant-ph/0510021",
"authors": [
"Jiri Vala",
"K. Birgitta Whaley",
"David S. Weiss"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.72.052318",
"title": "Quantum Error Correction of a Qubit Loss in an Addressable Atomic System",
"url": "https://arxiv.org/abs/quant-ph/0510021"
},
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