Quantum computing with subwavelength atomic arrays

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.

arXiv comment10 pages and 4 figures in the main text, 9 pages and 2 figures in Appendix

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Cited by in corpus (5)

• Photon-mediated dipole-dipole interactions as a resource for quantum science and technology in cold atoms
• Emergence of an Epsilon-Near-Zero Medium from Microscopic Atomic Principles
• Spatial averaging for light reflection and transmission through cold atom arrays
• Directional quantum scattering transducer in cooperative Rydberg metasurfaces
• Long-range quantum emitter interactions mediated by a non-local metasurface: Application to qubit-qubit entanglement