Tests of Fundamental Physics: Spectroscopy – QuantumFrontiers

High-precision atomic spectroscopy experiments and theory to probe new physics, dark matter and the variation of constants.

Activities

Probing new physics through isotope shift spectroscopy using highly charged ions
Working on test theories beyond SME
Clock tests in gravitational fields
Spectroscopic tests of dark matter and variation of constants
Tests of fundamental decoherence

Scientific Output

Publications

Kalincev D, Dreissen LS, Kulosa AP, Yeh CH, Fürst HA, Mehlstäubler TE. Motional heating of spatially extended ion crystals. Quantum Science and Technology. 2021 Mai 7;6(3):034003. doi: 10.1088/2058-9565/abee99

King SA, Spieß LJ, Micke P, Wilzewski A, Leopold T, López-Urrutia JRC et al. Algorithmic Ground-State Cooling of Weakly Coupled Oscillators Using Quantum Logic. Physical Review X. 2021 Dez 10;11(4):041049 . doi: 10.48550/arXiv.2102.12427, 10.1103/PhysRevX.11.041049

Mosel P, Sankar P, Düsing JF, Dittmar G, Püster T, Jäschke P et al. X-ray dose rate and spectral measurements during ultrafast laser machining using a calibrated (High-sensitivity) novel x-ray detector. MATERIALS. 2021 Aug 5;14(16):4397. doi: 10.3390/ma14164397

Nicolas R, Shi L, Chanteau B, Franz D, Kholodstova M, Ripault Q et al. Plasmon-Amplified Third Harmonic Generation in Metal/Dielectric Resonators. Plasmonics. 2021 Dez;16(6):1883-1889. Epub 2021 Apr 29. doi: 10.1007/s11468-021-01444-3

Rehbehn NH, Rosner MK, Bekker H, Berengut JC, Schmidt PO, King SA et al. Sensitivity to new physics of isotope-shift studies using the coronal lines of highly charged calcium ions. Physical Review A. 2021 Apr 21;103(4):L040801. doi: 10.1103/PhysRevA.103.L040801

Shi L, Babushkin I, Husakou A, Melchert O, Frank B, Yi J et al. Femtosecond Field-Driven On-Chip Unidirectional Electronic Currents in Nonadiabatic Tunneling Regime. Laser & photonics reviews. 2021 Aug;15(8):2000475. Epub 2021 Jun 16. doi: 10.1002/lpor.202000475

Stark J, Warnecke C, Bogen S, Chen S, Dijck EA, Kühn S et al. An ultralow-noise superconducting radio-frequency ion trap for frequency metrology with highly charged ions. Review of scientific instruments. 2021 Aug 18;92(8):083203. doi: 10.1063/5.0046569

Appi E, Papadopoulou CC, Mapa JL, Wesavkar N, Jusko C, Mosel P et al. A synchronized VUV light source based on high-order harmonic generation at FLASH. Scientific Reports. 2020 Apr 22;10(1):6867. doi: 10.1038/s41598-020-63019-2

Fürst HA, Yeh CH, Kalincev D, Kulosa AP, Dreissen LS, Lange R et al. Coherent Excitation of the Highly Forbidden Electric Octupole Transition in ¹⁷²Yb⁺. Physical review letters. 2020 Okt 16;125(16):163001. doi: 10.1103/PhysRevLett.125.163001

Micke P, Leopold T, King SA, Benkler E, Spieß LJ, Schmöger L et al. Coherent laser spectroscopy of highly charged ions using quantum logic. NATURE. 2020 Feb 6;578:60-65. Epub 2020 Jan 29. doi: 10.48550/arXiv.2010.15984, 10.1038/s41586-020-1959-8

Nordmann T, Didier A, Doležal M, Balling P, Burgermeister T, Mehlstäubler TE. Sub-kelvin temperature management in ion traps for optical clocks. Review of scientific instruments. 2020 Nov 24;91(11):111301. doi: 10.48550/arXiv.2008.04231, 10.1063/5.0024693

Porsev SG, Safronova UI, Safronova MS, Schmidt PO, Bondarev AI, Kozlov MG et al. Optical clocks based on the Cf¹⁵⁺ and Cf¹⁷⁺ ions. Physical Review A. 2020 Jul 6;102(1):012802. doi: 10.48550/arXiv.2004.05978, 10.1103/PhysRevA.102.012802

Shi L, Evlyukhin AB, Reinhardt C, Babushkin I, Zenin VA, Burger S et al. Progressive Self-Boosting Anapole-Enhanced Deep-Ultraviolet Third Harmonic during Few-Cycle Laser Radiation. ACS PHOTONICS. 2020 Jul 15;7(7):1655-1661. Epub 2020 Jun 16. doi: 10.1021/acsphotonics.0c00753

Yerokhin VA, Müller RA, Surzhykov A, Micke P, Schmidt PO. Nonlinear isotope-shift effects in Be-like, B-like, and C-like argon. Physical Review A. 2020 Jan 6;101(1):012502. doi: 10.1103/PhysRevA.101.012502

Franz D, Kaassamani S, Gauthier D, Nicolas R, Kholodtsova M, Douillard L et al. All semiconductor enhanced high-harmonic generation from a single nanostructured cone. Scientific Reports. 2019 Apr 5;9:5663. Epub 2019 Apr 5. doi: 10.1038/s41598-019-41642-y, 10.1038/s41598-020-63113-5

Jusko C, Sridhar A, Appi E, Shi L, Morgner U, Kovacev M. Filamentation-assisted plasma lifetime measurements in atomic and molecular gases via third-harmonic enhancement. Journal of the Optical Society of America B: Optical Physics. 2019 Dez;36(12):3505-3513. Epub 2019 Nov 21. doi: 10.1364/josab.36.003505

Shi L, Cardoso de Andrade JR, Tajalli Seifi A, Geng J, Yi J, Heidenblut T et al. Generating Ultrabroadband Deep-UV Radiation and Sub-10 nm Gap by Hybrid-Morphology Gold Antennas. Nano Letters. 2019 Jun 17;19(7):4779-4786. doi: 10.1021/acs.nanolett.9b02100

Shi L, Andrade JRC, Yi J, Marinskas M, Reinhardt C, Almeida E et al. Nanoscale Broadband Deep-Ultraviolet Light Source from Plasmonic Nanoholes. ACS Photonics. 2019 Apr 17;6(4):858-863. Epub 2019 Mär 7. doi: 10.1021/acsphotonics.9b00127

von der Wense LC, Seiferle B, Schneider C, Jeet J, Amersdorffer I, Arlt N et al. The concept of laser-based conversion electron Mössbauer spectroscopy for a precise energy determination of ^229m Th. Hyperfine Interactions. 2019 Mär 13;240(1):23. Epub 2019 Mär 13. doi: 10.1007/s10751-019-1564-0, 10.48550/arXiv.1904.01245

TG Members

Involved Members and their Relevant Expertise

Members	Institution	Relevant Expertise
Elina Fuchs, Leader	LUH	High Energy Physics with Cold Atoms
Piet O. Schmidt	PTB / LUH	Quantum Logic Spectroscopy of Highly Charged Ions; Transportable Al+ Uhr
Tanja Mehlstäubler	PTB / LUH	Precision spectroscopy in In+ and Yb+ ions; Test of LLI
Silke Ospelkaus	LUH	Exotic Spin Systems with Molecules; Application of Ultracold Molecular Systems for Precision Measurements and Quantum Many-Body Physics
Fiona Kirk	LUH
Chih-Han Yeh	PTB	LLI test with Yb ions
Abhilasha Singh	PTB
Julian Pick	LUH	Atomic State Squeezing and their application in tests of GR
tbd/Hammerer	LUH	Atomic State Squeezing and their application in tests of GR
Uwe Morgner	LUH	Enhanced Optical Nonlinearities and High-Harmonic Generation
Milutin Kovacev	LUH	Enhanced Optical Nonlinearities and High-Harmonic Generation
Philip Mosel	LUH	Enhanced Optical Nonlinearities and High-Harmonic Generation
Christian Pfeifer	ZARM	Lorentz invariance violations, Standard Model Extensions
Claus Lämmerzahl	ZARM	General Relativity, QED, atomic clocks
Lukas Spieß	PTB
Alexander Wilzewski	PTB
Dennis Schlippert	LUH	Atom interferometry
Jonas Keller	PTB
Jialiang Yu	PTB
Nimrod Hausser	PTB
Jan Richter	PTB
Agnese Mariotti	LUH
Moritz von Boehn	PTB
Kai Grensemann
Fabian Wolf	PTB
Malte Wehrheim	PTB
Shuying Chen	PTB

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