Scalable Heteronuclear Architecture of Neutral Atoms Based on EIT

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Abstract

Based on our recent paper [arXiv:2206.12176 (2022)], we propose a scalable heteronuclear architecture of parallel implementation of CNOT gates in arrays of alkali-metal neutral atoms for quantum information processing. We considered a scheme where we perform CNOT gates in a parallel manner within the array, while they are performed sequentially between the pairs of neighboring qubits by coherently transporting an array of atoms of one atomic species (ancilla qubits) using an array of mobile optical dipole traps generated by a 2D acousto-optic deflector (AOD). The atoms of the second atomic species (data qubits) are kept in the array of static optical dipole traps generated by spatial light modulator (SLM). The moving ancillas remain in the superposition of their logical ground states without loss of coherence, while their transportation paths avoid overlaps with the spatial positions of data atoms. We numerically optimized the system parameters to achieve the fidelity for parallelly implemented CNOT gates around F=95%">F=95% for the experimentally feasible conditions. Our design can be useful implementation of surface codes for quantum error correction. Renyi entropy and mutual information are also investigated to characterize the gate performance.

About the authors

A. M. Faruk

Novosibirsk State University;Faculty of Science, Al-Azhar University;Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences

Email: ahmed.farouk@azhar.edu.eg
Novosibirsk, 630090 Russia;Cairo, 11884 Egypt;Novosibirsk, 630090 Russia

I. I. Beterov

Novosibirsk State University;Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences;Institute of Laser Physics, Siberian Branch of Russian Academy of Sciences;Novosibirsk State Technical University

Email: beterov@isp.nsc.ru
Novosibirsk, 630090 Russia;Novosibirsk, 630090 Russia;Novosibirsk, 630090 Russia;Novosibirsk, 630073 Russia

Syuy Pen

State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences; Wuhan Institute of Quantum Technology

Email: beterov@isp.nsc.ru
Wuhan, 430071 China; Wuhan, 430206 China

I. I. Ryabtsev

Novosibirsk State University;Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences

Author for correspondence.
Email: beterov@isp.nsc.ru
Novosibirsk, 630090 Russia; Novosibirsk, 630090 Russia

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