dorsal/arxiv
View SchemaAlternative scheme for two-qubit conditional phase gate by adiabatic passage under dissipation
| Authors | Z. J. Deng, K. L. Gao, F. Mang |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0612160 |
| URL | https://arxiv.org/abs/quant-ph/0612160 |
| DOI | 10.1088/0953-4075/40/2/008 |
Abstract
We check a recent proposal [H. Goto and K. Ichimura Phys. Rev. A 70, 012305 (2004)] for controlled phase gate through adiabatic passage under the influence of spontaneous emission and the cavity decay. We show a modification of above proposal could be used to generate the necessary conditional phase gates in the two-qubit Grover search. Conditioned on no photon leakage either from the atomic excited state or from the cavity mode during the gating period, we numerically analyze the success probability and the fidelity of the two-qubit conditional phase gate by adiabatic passage. The comparison made between our proposed gating scheme and a previous one shows that Goto and Ichimura's scheme is an alternative and feasible way in the optical cavity regime for two-qubit gates and could be generalised in principle to multi-qubit gates.
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"abstract": "We check a recent proposal [H. Goto and K. Ichimura Phys. Rev. A 70, 012305\n(2004)] for controlled phase gate through adiabatic passage under the influence\nof spontaneous emission and the cavity decay. We show a modification of above\nproposal could be used to generate the necessary conditional phase gates in the\ntwo-qubit Grover search. Conditioned on no photon leakage either from the\natomic excited state or from the cavity mode during the gating period, we\nnumerically analyze the success probability and the fidelity of the two-qubit\nconditional phase gate by adiabatic passage. The comparison made between our\nproposed gating scheme and a previous one shows that Goto and Ichimura\u0027s scheme\nis an alternative and feasible way in the optical cavity regime for two-qubit\ngates and could be generalised in principle to multi-qubit gates.",
"arxiv_id": "quant-ph/0612160",
"authors": [
"Z. J. Deng",
"K. L. Gao",
"F. Mang"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/0953-4075/40/2/008",
"title": "Alternative scheme for two-qubit conditional phase gate by adiabatic passage under dissipation",
"url": "https://arxiv.org/abs/quant-ph/0612160"
},
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