Details
| Original language | English |
|---|---|
| Article number | 260503 |
| Journal | Physical review letters |
| Volume | 123 |
| Issue number | 26 |
| Early online date | 26 Dec 2019 |
| Publication status | Published - 31 Dec 2019 |
Abstract
Microwave trapped-ion quantum logic gates avoid spontaneous emission as a fundamental source of decoherence. However, microwave two-qubit gates are still slower than laser-induced gates and hence more sensitive to fluctuations and noise of the motional mode frequency. We propose and implement amplitude-shaped gate drives to obtain resilience to such frequency changes without increasing the pulse energy per gate operation. We demonstrate the resilience by noise injection during a two-qubit entangling gate with ^{9}Be^{+} ion qubits. In the absence of injected noise, amplitude modulation gives an operation infidelity in the 10^{-3} range.
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In: Physical review letters, Vol. 123, No. 26, 260503, 31.12.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Robust and Resource-Efficient Microwave Near-Field Entangling ^{9}Be^{+} Gate
AU - Zarantonello, G.
AU - Hahn, H.
AU - Schulte, M.
AU - Bautista-Salvador, A.
AU - Werner, R. F.
AU - Hammerer, K.
AU - Ospelkaus, C.
AU - Morgner, J.
PY - 2019/12/31
Y1 - 2019/12/31
N2 - Microwave trapped-ion quantum logic gates avoid spontaneous emission as a fundamental source of decoherence. However, microwave two-qubit gates are still slower than laser-induced gates and hence more sensitive to fluctuations and noise of the motional mode frequency. We propose and implement amplitude-shaped gate drives to obtain resilience to such frequency changes without increasing the pulse energy per gate operation. We demonstrate the resilience by noise injection during a two-qubit entangling gate with ^{9}Be^{+} ion qubits. In the absence of injected noise, amplitude modulation gives an operation infidelity in the 10^{-3} range.
AB - Microwave trapped-ion quantum logic gates avoid spontaneous emission as a fundamental source of decoherence. However, microwave two-qubit gates are still slower than laser-induced gates and hence more sensitive to fluctuations and noise of the motional mode frequency. We propose and implement amplitude-shaped gate drives to obtain resilience to such frequency changes without increasing the pulse energy per gate operation. We demonstrate the resilience by noise injection during a two-qubit entangling gate with ^{9}Be^{+} ion qubits. In the absence of injected noise, amplitude modulation gives an operation infidelity in the 10^{-3} range.
UR - http://www.scopus.com/inward/record.url?scp=85077301889&partnerID=8YFLogxK
U2 - 10.48550/arXiv.1911.03954
DO - 10.48550/arXiv.1911.03954
M3 - Article
C2 - 31951443
AN - SCOPUS:85077301889
VL - 123
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 26
M1 - 260503
ER -