Teilprojekt B02 – SFB 1227 DQ-mat – Leibniz Universität Hannover

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Dawel F, Pelzer L, Dietze K, Kramer J, Hild M, King SA et al. High-stability optical clock based on a continuously ground-state cooled Al + ion without compromising its accuracy. Physical Review Research. 2026 Jun 23;8(2):023327. doi: 10.1103/48zr-2t1p

Dietze K, Pelzer L, Krinner L, Dawel F, Kramer J, Spethmann NCH et al. Entanglement-enhanced optical ion clock. Physical review letters. 2026 Feb 17;136(7):073601. doi: 10.1103/dyqm-k8p6

Gusching A, Benkler E, Dörscher S, Lisdat C. Cascaded distribution and amplification of ultra-stable laser light. Optics express. 2026 Jul 27;34(15):27610-27620. doi: 10.1364/OE.595717

Jiang J, Viatkina AV, Jk S, Steinel M, Filzinger M, Peik E et al. High-Resolution Spectroscopy of Yb¹⁷³⁺ Ions. Physical review letters. 2026 Jan 16;136(2):023001. doi: 10.1103/rcdh-s4d7

Door M, Yeh CH, Heinz M, Kirk F, Lyu C, Miyagi T et al. Probing New Bosons and Nuclear Structure with Ytterbium Isotope Shifts. Physical Review Letters. 2025 Feb 11;134(6):063002. doi: 10.1103/PhysRevLett.134.063002, 10.48550/arXiv.2403.07792

Filzinger M, Caddell AR, Jani D, Steinel M, Giani L, Huntemann N et al. Ultralight Dark Matter Search with Space-Time Separated Atomic Clocks and Cavities. Physical Review Letters. 2025 Jan 23;134(3):031001. Epub 2023 Dez 21. doi: 10.1103/PhysRevLett.134.031001

Hausser HN, Keller J, Nordmann T, Bhatt NM, Kiethe J, Liu H et al. ¹¹⁵In⁺ - ¹⁷²Yb⁺ Coulomb Crystal Clock with 2.5×10^-18 Systematic Uncertainty. Physical Review Letters. 2025 Jan 16;134(2):023201. doi: 10.48550/arXiv.2402.16807, 10.1103/PhysRevLett.134.023201

Jordan E, Brinkmann M, Didier A, Jansson E, Steinel M, Huntemann N et al. Scalable chip-based 3D ion traps. Quantum Science and Technology. 2025 Aug 5;10(4):045005. doi: 10.1088/2058-9565/adf2db

Lindvall T, Pizzocaro M, Godun RM, Abgrall M, Akamatsu D, Amy-Klein A et al. Coordinated international comparisons between optical clocks connected via fiber and satellite links. OPTICA. 2025 Jun 20;12(6):843-852. Epub 2025 Jun 12. doi: 10.1364/OPTICA.561754

Spieß LJ, Chen S, Wilzewski A, Wehrheim M, Gilles J, Surzhykov A et al. Excited-State Magnetic Properties of Carbon-like Ca^{14+}. Physical review letters. 2025 Jul 22;135(4):43002. 043002. doi: 10.1103/p88p-brnx

Banerjee A, Budker D, Filzinger M, Huntemann N, Paz G, Perez G et al. Oscillating nuclear charge radii as sensors for ultralight dark matter. Physical Review Letters. 2024 Nov 24;135(22):223001. Epub 2023 Jan 25. doi: 10.1103/37vw-gc1r, 10.48550/arXiv.2301.10784

Schmidt RP, Ramakrishna S, Peshkov AA, Huntemann N, Peik E, Fritzsche S et al. Atomic photoexcitation as a tool for probing purity of twisted light modes. Physical Review A. 2024 Mär 4;109(3):033103. doi: 10.1103/PhysRevA.109.033103

Dörscher S, Klose J, Maratha palli S, Lisdat C. Experimental determination of the E2−M1 polarizability of the strontium clock transition. Physical Review Research. 2023 Feb 7;5(1):L012013. doi: 10.1103/PhysRevResearch.5.L012013

Filzinger M, Dörscher S, Lange R, Klose J, Steinel M, Benkler E et al. Improved limits on the coupling of ultralight bosonic dark matter to photons from optical atomic clock comparisons. Physical Review Letters. 2023 Jun 22;130(25):253001. 253001. doi: 10.48550/arXiv.2301.03433, 10.1103/PhysRevLett.130.253001

Kedar D, Yu J, Oelker E, Staron A, Milner WR, Robinson JM et al. Frequency stability of cryogenic silicon cavities with semiconductor crystalline coatings. OPTICA. 2023 Apr 20;10(4):464-470. doi: 10.1364/OPTICA.479462

Peshkov AA, Bidasyuk YM, Lange R, Huntemann N, Peik E, Surzhykov A. Interaction of twisted light with a trapped atom: Interplay between electronic and motional degrees of freedom. Physical Review A. 2023 Feb 13;107(2):023106. doi: 10.1103/physreva.107.023106

Steinel M, Shao H, Filzinger M, Lipphardt B, Brinkmann M, Didier A et al. Evaluation of a ⁸⁸Sr⁺ Optical Clock with a Direct Measurement of the Blackbody Radiation Shift and Determination of the Clock Frequency. Physical Review Letters. 2023 Aug 23;131(8):083002. doi: 10.1103/PhysRevLett.131.083002, 10.48550/arXiv.2212.08687

Kazakov GA, Dubey S, Bychek A, Sterr U, Bober M, Zawada M. Ultimate stability of active optical frequency standards. Physical Review A. 2022 Nov 23;106(5):053114. doi: 10.48550/arXiv.2205.14130, 10.1103/PhysRevA.106.053114

Lange R, Huntemann N, Peshkov AA, Surzhykov A, Peik E. Excitation of an Electric Octupole Transition by Twisted Light. Physical review letters. 2022 Dez 12;129(25):253901. doi: 10.1103/PhysRevLett.129.253901

Schioppo M, Kronjäger J, Silva A, Ilieva R, Paterson JW, Baynham CFA et al. Comparing ultrastable lasers at 7 × 10−17 fractional frequency instability through a 2220 km optical fibre network. Nature Communications. 2022 Jan 11;13(1):212. doi: 10.1038/s41467-021-27884-3

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