Multiqubit GHZ state preparation with $^{171}\text{Yb}^+$ ions for frequency standards
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912310714433536 |
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| author | Korolkov, A. E. Zalivako, I. V. Borisenko, A. S. Smirnov, V. N. Kamenskikh, P. A. Semerikov, I. A. Khabarova, K. Yu. Kolachevsky, N. N. |
| author_facet | Korolkov, A. E. Zalivako, I. V. Borisenko, A. S. Smirnov, V. N. Kamenskikh, P. A. Semerikov, I. A. Khabarova, K. Yu. Kolachevsky, N. N. |
| contents | Multiqubit Greenberger-Horne-Zeilinger (GHZ) state preparation is demonstrated on two to eight qubits in the chain of ten $^{171}Yb^+$ ions in the linear Paul trap with a sequence of single-qubit and two-qubit operations and pulsed dynamical decupling. Fidelity of the 8-qubit GHZ state is estimated to be $58.9 \pm 0.6\%$. The expected enhanced sensitivity of the parity oscillations phase to the analyzing pulse phase is observed. This result is a step towards a multi-ion optical clock with ytterbium ions with frequency averaging following $1/N$ scaling law in contrast to the slower $1/\sqrt{N}$ scaling for an ensemble of independent particles in case when the decoherence is dominated by the spontaneous decay. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_03853 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Multiqubit GHZ state preparation with $^{171}\text{Yb}^+$ ions for frequency standards Korolkov, A. E. Zalivako, I. V. Borisenko, A. S. Smirnov, V. N. Kamenskikh, P. A. Semerikov, I. A. Khabarova, K. Yu. Kolachevsky, N. N. Quantum Physics Atomic Physics Multiqubit Greenberger-Horne-Zeilinger (GHZ) state preparation is demonstrated on two to eight qubits in the chain of ten $^{171}Yb^+$ ions in the linear Paul trap with a sequence of single-qubit and two-qubit operations and pulsed dynamical decupling. Fidelity of the 8-qubit GHZ state is estimated to be $58.9 \pm 0.6\%$. The expected enhanced sensitivity of the parity oscillations phase to the analyzing pulse phase is observed. This result is a step towards a multi-ion optical clock with ytterbium ions with frequency averaging following $1/N$ scaling law in contrast to the slower $1/\sqrt{N}$ scaling for an ensemble of independent particles in case when the decoherence is dominated by the spontaneous decay. |
| title | Multiqubit GHZ state preparation with $^{171}\text{Yb}^+$ ions for frequency standards |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2504.03853 |