Details
| Original language | English |
|---|---|
| Article number | 042410 |
| Number of pages | 21 |
| Journal | Physical Review A |
| Volume | 106 |
| Issue number | 4 |
| Early online date | 7 Oct 2022 |
| Publication status | Published - Oct 2022 |
Abstract
Single atoms in dipole microtraps or optical tweezers have recently become a promising platform for quantum computing and simulation. Here we report a detailed theoretical analysis of the physics underlying an implementation of a Rydberg two-qubit gate in such a system - a cornerstone protocol in quantum computing with single atoms. We focus on a blockade-type entangling gate and consider various decoherence processes limiting its performance in a real system. We provide numerical estimates for the limits on fidelity of the maximally entangled states and predict the full process matrix corresponding to the noisy two-qubit gate. We consider different excitation geometries and show certain advantages for the gate realization with linearly polarized driving beams. Our methods and results may find implementation in numerical models for simulation and optimization of neutral atom based quantum processors.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Physical Review A, Vol. 106, No. 4, 042410, 10.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Coupled dynamics of spin qubits in optical dipole microtraps
T2 - Application to the error analysis of a Rydberg-blockade gate
AU - Gerasimov, L. V.
AU - Yusupov, R. R.
AU - Moiseevsky, A. D.
AU - Vybornyi, I.
AU - Tikhonov, K. S.
AU - Kulik, S. P.
AU - Straupe, S. S.
AU - Sukenik, C. I.
AU - Kupriyanov, D. V.
N1 - Funding Information: This work was supported by the Russian Science Foundation under Grant No. 18-72-10039. R.R.Y. acknowledges support from the Foundation for Assistance to Small Innovative Enterprises under grant UMNIK. S.P.K. and S.S.S. acknowledge support by the Interdisciplinary Scientific and Educational School of Moscow University Photonic and Quantum Technologies, Digital Medicine. D.V.K. and C.I.S. acknowledge support by the National Science Foundation under Grant No. 1606743. This work was supported by the Russian Roadmap on Quantum Computing.
PY - 2022/10
Y1 - 2022/10
N2 - Single atoms in dipole microtraps or optical tweezers have recently become a promising platform for quantum computing and simulation. Here we report a detailed theoretical analysis of the physics underlying an implementation of a Rydberg two-qubit gate in such a system - a cornerstone protocol in quantum computing with single atoms. We focus on a blockade-type entangling gate and consider various decoherence processes limiting its performance in a real system. We provide numerical estimates for the limits on fidelity of the maximally entangled states and predict the full process matrix corresponding to the noisy two-qubit gate. We consider different excitation geometries and show certain advantages for the gate realization with linearly polarized driving beams. Our methods and results may find implementation in numerical models for simulation and optimization of neutral atom based quantum processors.
AB - Single atoms in dipole microtraps or optical tweezers have recently become a promising platform for quantum computing and simulation. Here we report a detailed theoretical analysis of the physics underlying an implementation of a Rydberg two-qubit gate in such a system - a cornerstone protocol in quantum computing with single atoms. We focus on a blockade-type entangling gate and consider various decoherence processes limiting its performance in a real system. We provide numerical estimates for the limits on fidelity of the maximally entangled states and predict the full process matrix corresponding to the noisy two-qubit gate. We consider different excitation geometries and show certain advantages for the gate realization with linearly polarized driving beams. Our methods and results may find implementation in numerical models for simulation and optimization of neutral atom based quantum processors.
UR - http://www.scopus.com/inward/record.url?scp=85139879955&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.106.042410
DO - 10.1103/PhysRevA.106.042410
M3 - Article
AN - SCOPUS:85139879955
VL - 106
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 4
M1 - 042410
ER -