Half-minute-scale atomic coherence and high relative stability in a tweezer clock.
Aaron W. Young,Aaron W. Young,William J. Eckner,William J. Eckner,William R. Milner,William R. Milner,Dhruv Kedar,Dhruv Kedar,Matthew A. Norcia,Matthew A. Norcia,Eric Oelker,Eric Oelker,Nathan Schine,Nathan Schine,Jun Ye,Jun Ye,Adam Kaufman,Adam Kaufman +17 more
TLDR
This work leverages the favourable properties of tweezer-trapped alkaline-earth (strontium-88) atoms and introduces a hybrid approach to tailoring optical potentials that balances scalability, high-fidelity state preparation, site-resolved readout and preservation of atomic coherence.Abstract:
The preparation of large, low-entropy, highly coherent ensembles of identical quantum systems is fundamental for many studies in quantum metrology1, simulation2 and information3. However, the simultaneous realization of these properties remains a central challenge in quantum science across atomic and condensed-matter systems2,4–7. Here we leverage the favourable properties of tweezer-trapped alkaline-earth (strontium-88) atoms8–10, and introduce a hybrid approach to tailoring optical potentials that balances scalability, high-fidelity state preparation, site-resolved readout and preservation of atomic coherence. With this approach, we achieve trapping and optical-clock excited-state lifetimes exceeding 40 seconds in ensembles of approximately 150 atoms. This leads to half-minute-scale atomic coherence on an optical-clock transition, corresponding to quality factors well in excess of 1016. These coherence times and atom numbers reduce the effect of quantum projection noise to a level that is comparable with that of leading atomic systems, which use optical lattices to interrogate many thousands of atoms in parallel11,12. The result is a relative fractional frequency stability of 5.2(3) × 10−17τ−1/2 (where τ is the averaging time in seconds) for synchronous clock comparisons between sub-ensembles within the tweezer array. When further combined with the microscopic control and readout that are available in this system, these results pave the way towards long-lived engineered entanglement on an optical-clock transition13 in tailored atom arrays. A tweezer clock containing about 150 88Sr atoms achieves trapping and optical excited-state lifetimes exceeding 40 seconds, and shows relative fractional frequency stability similar to that of leading atomic clocks.read more
Citations
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Quantum phases of matter on a 256-atom programmable quantum simulator
Sepehr Ebadi,Tout T. Wang,Harry Levine,Alexander Keesling,Giulia Semeghini,Ahmed Omran,Dolev Bluvstein,Rhine Samajdar,Hannes Pichler,Hannes Pichler,Wen Wei Ho,Wen Wei Ho,Soonwon Choi,Subir Sachdev,Markus Greiner,Vladan Vuletic,Mikhail D. Lukin +16 more
TL;DR: In this paper, a programmable quantum simulator based on deterministically prepared two-dimensional arrays of neutral atoms, featuring strong interactions controlled by coherent atomic excitation into Rydberg states, is presented.
Journal ArticleDOI
Resolving the gravitational redshift across a millimetre-scale atomic sample
TL;DR: In this paper , the authors measured a linear frequency gradient consistent with the gravitational redshift within a single millimeter scale sample of ultracold strontium and improved the fractional frequency measurement uncertainty by more than a factor of 10, reaching 7.6$\times 10^{-21}$.
Journal ArticleDOI
Quantum science with optical tweezer arrays of ultracold atoms and molecules
Adam Kaufman,Kang-Kuen Ni +1 more
TL;DR: Optical tweezers as mentioned in this paper have been used for the control of many-particle quantum systems and their applications in quantum information processing, quantum simulation and metrology, as well as many other applications.
Journal Article
Rydberg mediated entanglement in a two-dimensional neutral atom qubit array
TL;DR: Comparison with a detailed error model based on quantum process matrices indicates that finite atom temperature and laser noise are the dominant error sources contributing to the observed gate infidelity.
Journal ArticleDOI
Visible light photonic integrated Brillouin laser
Nitesh Chauhan,Andrei Isichenko,Kaikai Liu,Jiawei Wang,Qiancheng Zhao,Ryan O. Behunin,Peter T. Rakich,Andrew Jayich,C. Fertig,C. W. Hoyt,Daniel J. Blumenthal +10 more
TL;DR: In this paper, the first visible light photonic integrated Stimulated Brillouin scattering (SBS) laser was demonstrated at 674 nm to address the 88Sr+ optical clock transition.
References
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Quantum information with Rydberg atoms
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Probing many-body dynamics on a 51-atom quantum simulator.
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TL;DR: This work demonstrates a method for creating controlled many-body quantum matter that combines deterministically prepared, reconfigurable arrays of individually trapped cold atoms with strong, coherent interactions enabled by excitation to Rydberg states, and realizes a programmable Ising-type quantum spin model with tunable interactions and system sizes of up to 51 qubits.
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Quantum Simulation
TL;DR: The main theoretical and experimental aspects of quantum simulation have been discussed in this article, and some of the challenges and promises of this fast-growing field have also been highlighted in this review.
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TL;DR: In this article, the authors review the spectacular accuracy and stability gains that can be obtained when working with laser cooled ions or neutral atoms and discuss some important applications of these optical clocks, from geodesy to tests of fundamental theories to many body physics.
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Quantum Spin Liquids
Lucile Savary,Leon Balents +1 more
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