Polarization-selective quantum cooperative response in dual-species atom arrays

• URL: http://arxiv.org/abs/2602.23237v1
• Date: Thu, 26 Feb 2026 17:12:54 GMT
• Title: Polarization-selective quantum cooperative response in dual-species atom arrays
• Authors: Huan Wang, Shangguo Zhu, Yun Long, Fei Zhang, Yinghui Guo, Mingbo Pu, Xiangang Luo,
• Abstract summary: We show that intrinsic polarizability difference breaks in-plane symmetry in subwavelength atom arrays.<n>By engineering the lattice spacing and detunings, the arrays exhibit polarization-dependent subradiant modes.<n>Our work establishes a dynamically reconfigurable atomic-photonic platform for versatile subwavelength quantum optical elements.
• Score: 9.891494760490133
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Atom arrays have emerged as a powerful platform for quantum light-matter interfaces, yet single-species arrays are constrained by in-plane symmetry, restricting polarization control. Here we investigate the cooperative optical response of dual-species subwavelength atom arrays, in which intrinsic polarizability difference breaks in-plane symmetry. By engineering the lattice spacing and detunings, the arrays exhibit polarization-dependent subradiant modes, enabling complete reflection of specific polarization component. Leveraging this mechanism, we assemble array units as functional pixels and demonstrate a scalable polarization-selective quantum light modulator. Our work establishes a dynamically reconfigurable atomic-photonic platform for versatile subwavelength quantum optical elements.

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