Toward a spin-squeezed strontium optical lattice clock with state-of-the-art stability
ORAL
Abstract
Current state-of-the-art optical lattice clocks derive their performance by interrogating the clock transition of classical ensembles of thousands of atoms. With improving local oscillator technology, the independent stability of these clocks is approaching quantum projection noise [1], giving rise to considerable interest in employing spin squeezing to demonstrate a quantum advantage in frequency metrology. To date, implementation of spin squeezing in clocks has been demonstrated for either microwave clocks [2], or optical clocks at 10-13 level stability [3]. In this talk we will present progress toward the development of a spin-squeezed strontium optical clock, with the aim of demonstrating the positive impact of spin-squeezing at stability levels of 10-16 or better.
[1] Oelker, E., Hutson, R.B., Kennedy, C.J. et al. Demonstration of 4.8 × 10−17 stability at 1 s for two independent optical clocks. Nat. Photonics 13, 714–719 (2019).
[2] Kevin C. Cox, Graham P. Greve, Joshua M. Weiner, and James K. Thompson. Deterministic Squeezed States with Collective Measurements and Feedback. Phys. Rev. Lett. 116, 093602 (2016).
[3] Pedrozo-Peñafiel, E., Colombo, S., Shu, C. et al. Entanglement on an optical atomic-clock transition. Nature 588, 414–418 (2020).
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Presenters
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John M Robinson
JILA, NIST, and University of Colorado Boulder, JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, 440 UCB, Boulder, Colorado 80309, USA
Authors
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John M Robinson
JILA, NIST, and University of Colorado Boulder, JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, 440 UCB, Boulder, Colorado 80309, USA
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Maya Miklos*
JILA, NIST, and University of Colorado Boulder, JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, 440 UCB, Boulder, Colorado 80309, USA
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Yee Ming Tso
JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, 440 UCB, Boulder, Colorado 80309, USA
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Josephine Meyer
JILA, NIST, and University of Colorado Boulder, JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, 440 UCB, Boulder, Colorado 80309, USA
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Colin J Kennedy
JILA, NIST, and University of Colorado Boulder, JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, 440 UCB, Boulder, Colorado 80309, USA
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Tobias Bothwell
JILA, NIST, and University of Colorado Boulder, JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, 440 UCB, Boulder, Colorado 80309, USA, University of Colorado, Boulder
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James K Thompson
University of Colorado, Boulder, JILA, NIST, and University of Colorado Boulder, JILA, NIST, CU Boulder, University of Colorado, Boulder / NIST
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Jun Ye
JILA and University of Colorado Boulder, JILA, University of Colorado, Boulder, University of Colorado, Boulder, JILA, NIST, and University of Colorado Boulder, JILA, University of Colorado Boulder, JILA, University of Colorado and National Institute of Standards and Technology, and Department of Physics, University of Colorado, Boulder, Colorado 80309, USA, JILA, National Institute of Standards and Technology and Department of Physics, University of Colorado, Boulder, Colorado 80309, USA, JILA, NIST, and Department of Physics, University of Colorado, Boulder, JILA, NIST, and University of Colorado, Boulder, JILA, NIST, and University of Colorado at Boulder