dorsal/arxiv
View SchemaScalable quantum computation in systems with Bose-Hubbard dynamics
| Authors | Guido Pupillo, Ana Maria Rey, Gavin Brennen, Carl J. Williams, Charles W. Clark |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0403052 |
| URL | https://arxiv.org/abs/quant-ph/0403052 |
| DOI | 10.1080/09500340408231798 |
| Journal | Journal of Modern Optics 51, 2395 (2004) |
Abstract
Several proposals for quantum computation utilize a lattice type architecture with qubits trapped by a periodic potential. For systems undergoing many body interactions described by the Bose-Hubbard Hamiltonian, the ground state of the system carries number fluctuations that scale with the number of qubits. This process degrades the initialization of the quantum computer register and can introduce errors during error correction. In an earlier manuscript we proposed a solution to this problem tailored to the loading of cold atoms into an optical lattice via the Mott Insulator phase transition. It was shown that by adding an inhomogeneity to the lattice and performing a continuous measurement, the unit filled state suitable for a quantum computer register can be maintained. Here, we give a more rigorous derivation of the register fidelity in homogeneous and inhomogeneous lattices and provide evidence that the protocol is effective in the finite temperature regime.
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"abstract": "Several proposals for quantum computation utilize a lattice type architecture\nwith qubits trapped by a periodic potential. For systems undergoing many body\ninteractions described by the Bose-Hubbard Hamiltonian, the ground state of the\nsystem carries number fluctuations that scale with the number of qubits. This\nprocess degrades the initialization of the quantum computer register and can\nintroduce errors during error correction. In an earlier manuscript we proposed\na solution to this problem tailored to the loading of cold atoms into an\noptical lattice via the Mott Insulator phase transition. It was shown that by\nadding an inhomogeneity to the lattice and performing a continuous measurement,\nthe unit filled state suitable for a quantum computer register can be\nmaintained. Here, we give a more rigorous derivation of the register fidelity\nin homogeneous and inhomogeneous lattices and provide evidence that the\nprotocol is effective in the finite temperature regime.",
"arxiv_id": "quant-ph/0403052",
"authors": [
"Guido Pupillo",
"Ana Maria Rey",
"Gavin Brennen",
"Carl J. Williams",
"Charles W. Clark"
],
"categories": [
"quant-ph",
"cond-mat.other"
],
"doi": "10.1080/09500340408231798",
"journal_ref": "Journal of Modern Optics 51, 2395 (2004)",
"title": "Scalable quantum computation in systems with Bose-Hubbard dynamics",
"url": "https://arxiv.org/abs/quant-ph/0403052"
},
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