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<p>Photonic integrated stable, ultra-low-noise lasers are essential for scalable and portable quantum information systems. Trapped ions are a leading modality for quantum computing and optical clocks, with room-temperature operation enabling portable applications. Current systems rely on free-space lasers and stabilization cavities, frequency conversion, and cryogenic infrastructure, limiting size, weight, and power. We demonstrate a chip-scale coil-stabilized 674 nm Brillouin laser driving qubit state preparation and measurement and the optical clock transition in a room-temperature surface electrode trapped <sup>88</sup>Sr<sup>+</sup> ion without a bulk-optic reference cavity. The CMOS compatible silicon nitride integrated 3-meter coil and Brillouin laser achieve 8.8×10<sup>-13</sup> stability at 20 ms, sufficient to interrogate the 0.4 Hz quadrupole optical clock transition. The ion-disciplined laser achieves 5.3 <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\times {10}^{-13}/\sqrt{\tau }\)</EquationSource> <EquationSource Format="MATHML"><math> <mo>×</mo> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>−</mo> <mn>13</mn> </mrow> </msup> <mo>/</mo> <msqrt> <mrow> <mi>τ</mi> </mrow> </msqrt> </math></EquationSource> </InlineEquation> stability, spectroscopy with 1.5 kHz linewidths, and 99.6% qubit state preparation and measurement fidelity. These results light the way towards integration of stabilized lasers with trapped-ion chips for portable and robust quantum technologies.</p>

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Chip scale coil stabilized Brillouin laser driving a room temperature trapped ion qubit

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月3日

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  • Nitesh Chauhan,
  • Christopher Caron,
  • Andrei Isichenko,
  • Meiting Song,
  • Zhenyu Wei,
  • Nishat Helaly,
  • Kaikai Liu,
  • Jiawei Wang,
  • Robert J. Niffenegger,
  • Daniel J. Blumenthal

摘要

Photonic integrated stable, ultra-low-noise lasers are essential for scalable and portable quantum information systems. Trapped ions are a leading modality for quantum computing and optical clocks, with room-temperature operation enabling portable applications. Current systems rely on free-space lasers and stabilization cavities, frequency conversion, and cryogenic infrastructure, limiting size, weight, and power. We demonstrate a chip-scale coil-stabilized 674 nm Brillouin laser driving qubit state preparation and measurement and the optical clock transition in a room-temperature surface electrode trapped 88Sr+ ion without a bulk-optic reference cavity. The CMOS compatible silicon nitride integrated 3-meter coil and Brillouin laser achieve 8.8×10-13 stability at 20 ms, sufficient to interrogate the 0.4 Hz quadrupole optical clock transition. The ion-disciplined laser achieves 5.3 \(\times {10}^{-13}/\sqrt{\tau }\) × 10 − 13 / τ stability, spectroscopy with 1.5 kHz linewidths, and 99.6% qubit state preparation and measurement fidelity. These results light the way towards integration of stabilized lasers with trapped-ion chips for portable and robust quantum technologies.