Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 220407 |
| Fachzeitschrift | Physical Review Letters |
| Jahrgang | 97 |
| Ausgabenummer | 22 |
| Publikationsstatus | Veröffentlicht - 1 Dez. 2006 |
| Extern publiziert | Ja |
Abstract
A crucial building block for quantum information processing with trapped ions is a controlled-NOT quantum gate. In this Letter, 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.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
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in: Physical Review Letters, Jahrgang 97, Nr. 22, 220407, 01.12.2006.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Process tomography of ion trap quantum gates
AU - Riebe, M.
AU - Kim, K.
AU - Schindler, P.
AU - Monz, T.
AU - Schmidt, Piet Oliver
AU - Körber, T. K.
AU - Hänsel, W.
AU - Häffner, H.
AU - Roos, C. F.
AU - Blatt, R.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - A crucial building block for quantum information processing with trapped ions is a controlled-NOT quantum gate. In this Letter, 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.
AB - A crucial building block for quantum information processing with trapped ions is a controlled-NOT quantum gate. In this Letter, 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.
UR - http://www.scopus.com/inward/record.url?scp=33845209325&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.97.220407
DO - 10.1103/PhysRevLett.97.220407
M3 - Article
AN - SCOPUS:33845209325
VL - 97
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 22
M1 - 220407
ER -