Sören Dörscher

Physikalisch-Technische Bundesanstalt — Germany

Physics and Astronomy · Physical Sciences

15h-index2.3kcitations49works7.92yr avg
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Research Topics

Advanced Frequency and Time Standards(38), Cold Atom Physics and Bose-Einstein Condensates(27), Atomic and Subatomic Physics Research(14), Advanced Fiber Laser Technologies(9), Scientific Measurement and Uncertainty Evaluation(9)

Publications49 total

Entanglement-Enhanced Optical Ion Clock
Physical Review Letters·2026· 1 citedOpen Access
Transportable strontium lattice clock with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>4</mml:mn> <mml:mo>×</mml:mo> <mml:msup> <mml:mn>10</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>19</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math> blackbody radiation shift uncertainty
Quantum Science and Technology·2025· 2 citedOpen Access
Transportable strontium lattice clock with $4 \times 10^{-19}$ blackbody radiation shift uncertainty
arXiv (Cornell University)·2025Open Access
Entanglement-enhanced optical ion clock
arXiv (Cornell University)·2025· 1 citedOpen Access
Coordinated international comparisons between optical clocks connected via fiber and satellite links
Optica·2025· 7 citedOpen Access
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:msup><mml:mrow><mml:mi>In</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>115</mml:mn></mml:mrow></mml:mmultiscripts><mml:mtext>−</mml:mtext><mml:mrow><mml:mmultiscripts><mml:mrow><mml:msup><mml:mrow><mml:mi>Yb</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>172</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:mrow></mml:math> Coulomb Crystal Clock with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>2.5</mml:mn><mml:mo>×</mml:mo><mml:msup><mml:mrow><mml:mn>10</mml:mn></mml:mrow><mml:mrow><mml:mo>−</mml:mo><mml:mn>18</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math> Systematic Uncertainty
Physical Review Letters·2025· 26 citedOpen Access
Robust Optical Clocks for International Timescales (ROCIT)
Journal of Physics Conference Series·2024· 5 citedOpen Access
International comparison of optical frequencies with transportable optical lattice clocks
arXiv (Cornell University)·2024· 4 citedOpen Access
Long-distance chronometric leveling with a portable optical clock
Physical Review Applied·2024· 25 citedOpen Access
Long-distance chronometric leveling with a portable optical clock
arXiv (Cornell University)·2023· 1 citedOpen Access
Experimental determination of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>E</mml:mi><mml:mn>2</mml:mn><mml:mtext>−</mml:mtext><mml:mi>M</mml:mi><mml:mn>1</mml:mn></mml:mrow></mml:math> polarizability of the strontium clock transition
Physical Review Research·2023· 7 citedOpen Access
USOQS guideline document
Zenodo (CERN European Organization for Nuclear Research)·2022Open Access
Experimental determination of the E2-M1 polarizability of the strontium clock transition
arXiv (Cornell University)·2022· 1 citedOpen Access
Transportable clock laser system with an instability of 1.6 × 10<sup>−16</sup>
Optics Letters·2022· 43 cited
A transportable clock laser system with an instability of $1.6 \times 10^{-16}$
arXiv (Cornell University)·2022Open Access
Data for "Comparing ultrastable lasers at 7×10-17 fractional frequency instability through a 2220 km optical fibre network"
Zenodo (CERN European Organization for Nuclear Research)·2021· 1 citedOpen Access
Data for "Comparing ultrastable lasers at 7×10-17 fractional frequency instability through a 2220 km optical fibre network"
Zenodo (CERN European Organization for Nuclear Research)·2021Open Access
Blackbody radiation shift in strontium lattice clocks revisited
Physical Review Research·2021· 28 citedOpen Access
Optical frequency ratio of a <sup>171</sup>Yb<sup>+</sup> single-ion clock and a <sup>87</sup>Sr lattice clock
Metrologia·2020· 48 citedOpen Access
Dynamical decoupling of laser phase noise in compound atomic clocks
Communications Physics·2020· 22 citedOpen Access
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Frequent Co-authors

Christian Lisdat(42), Uwe Sterr(27), Ali Al-Masoudi(26), Erik Benkler(20), R. Schwarz(19), Sebastian Häfner(17), Alexander Kühl(14), Sebastian Koke(13), Jérôme Lodewyck(13), Rodolphe Le Targat(12), Paul-Éric Pottie(12), Gesine Grosche(11), Nils Huntemann(11), B. Lipphardt(11), Thomas Legero(10), Anne Amy‐Klein(10), Olivier Lopez(10), Ian R. Hill(10), Richard Hobson(10), H. S. Margolis(10)