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arXiv · 2306.08555

Quantum computing with subwavelength atomic arrays

Freya Shah·Taylor L. Patti·Oriol Rubies-Bigorda·Susanne F. Yelin
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Abstract

Photon-mediated interactions in subwavelength atomic arrays have numerous applications in quantum science. In this manuscript, we explore the potential of three-level quantum emitters, or ``impurities" embedded in a two-dimensional atomic array to serve as a platform for quantum computation. By exploiting the altered behavior of impurities as a result of the induced dipole-dipole interactions mediated by subwavelength array, we design and simulate a set of universal quantum gates consisting of the $\sqrt{\text{iSWAP}}$ and single-qubit rotations. We demonstrate that these gates have very high fidelities due to the long atomic dipole-dipole coherence times, as long as the atoms remain within a proximal range. Finally, we design and simulate quantum circuits leading to the generation of the maximally entangled two-qubit Bell states, as well as the entangled three-qubit GHZ state. These findings establish subwavelength emitter arrays as an alternative platform for quantum computation and quantum simulation.

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Freya Shah, Taylor L. Patti, Oriol Rubies-Bigorda, Susanne F. Yelin. 2023-06-14. Quantum computing with subwavelength atomic arrays. https://doi.org/10.1103/physreva.109.012613

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