dorsal/arxiv
View SchemaProcess tomography of ion trap quantum gates
| Authors | M. Riebe, K. Kim, P. Schindler, T. Monz, P. O. Schmidt, T. K. Koerber, W. Haensel, H. Haeffner, C. F. Roos, R. Blatt |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0609228 |
| URL | https://arxiv.org/abs/quant-ph/0609228 |
| DOI | 10.1103/PhysRevLett.97.220407 |
| Journal | Phys. Rev. Lett. 97, 220407 (2006) |
Abstract
A crucial building block for quantum information processing with trapped ions is a controlled-NOT quantum gate. In this paper, two different sequences of laser pulses implementing such a gate operation are analyzed using quantum process tomography. Fidelities of up to 92.6(6)% are achieved for single gate operations and up to 83.4(8)% for two concatenated gate operations. By process tomography we assess the performance of the gates for different experimental realizations and demonstrate the advantage of amplitude--shaped laser pulses over simple square pulses. We also investigate whether the performance of concatenated gates can be inferred from the analysis of the single gates.
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"abstract": "A crucial building block for quantum information processing with trapped ions\nis a controlled-NOT quantum gate. In this paper, two different sequences of\nlaser pulses implementing such a gate operation are analyzed using quantum\nprocess tomography. Fidelities of up to 92.6(6)% are achieved for single gate\noperations and up to 83.4(8)% for two concatenated gate operations. By process\ntomography we assess the performance of the gates for different experimental\nrealizations and demonstrate the advantage of amplitude--shaped laser pulses\nover simple square pulses. We also investigate whether the performance of\nconcatenated gates can be inferred from the analysis of the single gates.",
"arxiv_id": "quant-ph/0609228",
"authors": [
"M. Riebe",
"K. Kim",
"P. Schindler",
"T. Monz",
"P. O. Schmidt",
"T. K. Koerber",
"W. Haensel",
"H. Haeffner",
"C. F. Roos",
"R. Blatt"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.97.220407",
"journal_ref": "Phys. Rev. Lett. 97, 220407 (2006)",
"title": "Process tomography of ion trap quantum gates",
"url": "https://arxiv.org/abs/quant-ph/0609228"
},
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