Publications

21. Coherent Three-Photon Excitation of the Strontium Clock Transition

We report coherent Rabi oscillations between ground- and clock states using a three-photon coupling scheme.

Junyu He, Benjamin Pasquiou, Rodrigo Gonzalez Escudero, Sheng Zhou, Mateusz Borkowski, Florian Schreck

arXiv:2406.07530

20. Searching for new fundamental interactions via isotopic shifts in molecular lattice clocks

One could place limits on new gravitylike forces using isotope shifts measured by a molecular lattice clock.

Emily Tiberi, Mateusz Borkowski, Brandon Iritani, Robert Moszynski, Tanya Zelevinsky

Physical Review Research 6 (3), 033013 (2024)

19. Accurate Determination of Blackbody Radiation Shifts in a Strontium Molecular Lattice Clock

By directly measuring dynamic polarizabilities, we can control the blackbody radiation shifts in a molecular lattice clock to the 10^-16 level.

Brandon Iritani, Emily Tiberi, Wojciech Skomorowski, Robert Moszynski, Mateusz Borkowski, Tanya Zelevinsky

Physical Review Letters 131 (26), 263201 (2023)

18. Active stabilization of kilogauss magnetic fields to the ppm level for magnetoassociation on ultranarrow Feshbach resonances

We actively stabilize a magnetic field of over a thousand gauss to two parts per million — and have the microwave atomic spectra to prove it.

Mateusz Borkowski, Lukas Reichsöllner, Premjith Thekkeppatt, Vincent Barbé, Tijs van Roon, Klaasjan van Druten, Florian Schreck

Review of Scientific Instruments 94, 073202 (2023)

17. Analytic approximations to the strengths of near-threshold optical Feshbach resonances

The strengths of photoassociation lines can be written down in terms of analytic formulas. Also, the Rabi oscillation frequency for an optically driven atom pair in a lattice site follows a scaling law.

Mateusz Borkowski

Phys. Rev. A 107, 063101 (2023)

16. Terahertz Vibrational Molecular Clock with Systematic Uncertainty at the 10^-14 Level

We demonstrate a molecular lattice clock operating on a Raman transition between the least- and most deeply bound state of the strontium dimer.

Kon H. Leung, Brandon Iritani, Emily Tiberi, Iwona Majewska, Mateusz Borkowski, Robert Moszynski, Tanya Zelevinsky

Physical Review X 13 (1), 011047 (2023)

Featured in Physics article New Accuracy Record for Molecular Lattice Clock

15. Quantum chaos in Feshbach resonances of the ErYb system

The anisotropic interaction between erbium and ytterbium atoms gives rise to Feshbach resonances that could allow molecule formation. Also, the Feshbach spectrum exhibits quantum chaos.

Maciej B. Kosicki, Mateusz Borkowski, Piotr S. Żuchowski

New Journal of Physics 22 (2), 023024 (2020)

14. Weakly bound molecules as sensors of new gravitylike forces

Yukawa-type non-Newtonian gravity modifies the long-range atomic interactions in a manner detectable by a molecular lattice clock.

Mateusz Borkowski, Alexei A Buchachenko, Roman Ciuryło, Paul S Julienne, Hirotaka Yamada, Yuu Kikuchi, Yosuke Takasu, Yoshiro Takahashi

Scientific Reports 9 (1), 14807 (2019)

13. Modeling the electronic structures of the ground and excited states of the ytterbium atom and the ytterbium dimer: A modern quantum chemistry perspective

The ytterbium atom, with its half-filled inner electronic shell, makes calculating interatomic potentials a challenge to modern quantum chemistry. Here we present new ground- and excited-state potentials for the ytterbium dimer.

Paweł Tecmer, Katharina Boguslawski, Mateusz Borkowski, Piotr S Żuchowski, Dariusz Kędziera

International Journal of Quantum Chemistry 119 (18), e25983 (2019)

12. Guidelines for developing optical clocks with 10^-18 fractional frequency uncertainty

We collect advice on how to build 10^-18 atomic lattice clocks.

Moustafa Abdel-Hafiz, Piotr Ablewski, Ali Al-Masoudi, Héctor Álvarez Martínez, Petr Balling, Geoffrey Barwood, Erik Benkler, Marcin Bober, Mateusz Borkowski, William Bowden, Roman Ciuryło, Hubert Cybulski, Alexandre Didier, Miroslav Doležal, Sören Dörscher, Stephan Falke, Rachel M. Godun, Ramiz Hamid, Ian R. Hill, Richard Hobson, Nils Huntemann, Yann Le Coq, Rodolphe Le Targat, Thomas Legero, Thomas Lindvall, Christian Lisdat, Jérôme Lodewyck, Helen S. Margolis, Tanja E. Mehlstäubler, Ekkehard Peik, Lennart Pelzer, Marco Pizzocaro, Benjamin Rauf, Antoine Rolland, Nils Scharnhorst, Marco Schioppo, Piet O. Schmidt, Roman Schwarz, Çağrı Şenel, Nicolas Spethmann, Uwe Sterr, Christian Tamm, Jan W. Thomsen, Alvise Vianello, Michał Zawada

arXiv:1906.11495 (2019)

11. Optical Lattice Clocks with Weakly Bound Molecules

We propose a new type of molecular lattice clock based on electronic transitions between levels in the ground- and clock-state potentials.

Mateusz Borkowski

Physical Review Letters 120 (8), 083202 (2018)

10. Optical Feshbach resonances and ground-state-molecule production in the RbHg system

We show how to photoassociate ultracold RbHg molecules and then how to bring them to the rovibrational ground state via STIRAP.

Mateusz Borkowski, Rodolfo Muñoz Rodriguez, Maciej B. Kosicki, Roman Ciuryło, Piotr S. Żuchowski

Physical Review A 96 (6), 063411 (2017)

9. Beyond-Born-Oppenheimer effects in sub-kHz-precision photoassociation spectroscopy of ytterbium atoms

We show how Beyond-Born-Oppenheimer effects modify the mass-scaling behavior of near-threshold levels in ultracold ytterbium dimers.

Mateusz Borkowski, Alexei A. Buchachenko, Roman Ciuryło, Paul S. Julienne, Hirotaka Yamada, Yuu Kikuchi, Kakeru Takahashi, Yosuke Takasu, Yoshiro Takahashi

Physical Review A 96 (6), 063405 (2017)

Featured as an Editor's Suggestion.

8. Self-referenced, accurate and sensitive optical frequency comb spectroscopy with a virtually imaged phased array spectrometer

We present a cavity-enhanced optical frequency comb spectrometer using a virtually imaged phased array (VIPA) spectrometer.

Grzegorz Kowzan, Kevin F. Lee, Magdalena Paradowska, Mateusz Borkowski, Piotr Ablewski, Szymon Wójtewicz, Kamila Stec, Daniel Lisak, Martin E. Fermann, Ryszard S. Trawiński, Piotr Masłowski

Optics Letters 41 (5), 974-977 (2016)

7. Interactions and collisions of discrete breathers in two-species Bose-Einstein condensates in optical lattices

We simulate the fate of two travelling breathers colliding, each composed of a different atomic species. The outcome depends dramatically on the interspecies scattering length.

Russell Campbell, Gian-Luca Oppo, Mateusz Borkowski

Physical Review E 91 (1), 012909 (2015)

6. Mass scaling and nonadiabatic effects in photoassociation spectroscopy of ultracold strontium atoms

We report new ⁸⁶Sr photoassociation lines and reveal a rich complexity in the mass scaling of ¹S₀+³P₁ levels of the strontium dimer.

Mateusz Borkowski, Piotr Morzyński, Roman Ciuryło, Paul S. Julienne, Mi Yan, Brian J. DeSalvo, T.C. Killian

Physical Review A 90 (3), 032713

5. Scattering lengths in isotopologues of the RbYb system

We use two-color photoassociation spectroscopy to determine the s-wave scattering lengths for all isotopic combinations of rubidium and ytterbium.

Mateusz Borkowski, Piotr S Żuchowski, Roman Ciuryło, Paul S. Julienne, Dariusz Kędziera, Łukasz Mentel, Paweł Tecmer, Frank Münchow, Cristian Bruni, Axel Görlitz

Physical Review A 88 (5), 052708

4. Controlled production of subradiant states of a diatomic molecule in an optical lattice

First demonstration of ultracold subradiant molecules in an optical lattice.

Yosuke Takasu, Yutaka Saito, Yoshiro Takahashi, Mateusz Borkowski, Roman Ciuryło, Paul S. Julienne

Physical Review Letters 108 (17), 173002 (2012)

3. Photoassociative production of ultracold heteronuclear ytterbium molecules

Photoassociation spectroscopy of ultracold mixed-isotope ytterbium dimers.

Mateusz Borkowski, Roman Ciuryło, Paul S. Julienne, Rekishu Yamazaki, Hideaki Hara, Katsunari Enomoto, Shintaro Taie, Seiji Sugawa, Yosuke Takasu, Yoshiro Takahashi

Physical Review A 84(3), 030702 (2011)

2. A compact magneto-optical trap apparatus for calcium

We report a working calcium MOT apparatus, operating on the 423-nm cooling transition.

Umakanth Dammalapati, Ian Norris, Luke Maguire, Mateusz Borkowski, Erling Riis

Measurement Science and Technology 20, 095303 (2009)

1. Line shapes of optical Feshbach resonances in bosonic ytterbium

The large variation of scattering lengths displayed by the ytterbium isotopes leads to an equally large variation of line strengths in photoassociation spectra.
Mateusz Borkowski, Roman Ciuryło, Paul S. Julienne, Satoshi Tojo, Katsunari Enomoto, Yoshiro Takahashi
Physical Review A 80, 012715 (2009)

Research Highlights

News

ICAP 2024 Prize

Molecular lattice clocks could sense fifth forces via isotope shifts

Three-Photon Excitation of the Strontium Clock Transition

Determining the blackbody radiation shift in a molecular lattice clock

Magnetic field stabilized like never before

A molecular Raman clock

Publications

21.

Coherent Three-Photon Excitation of the Strontium Clock Transition

We report coherent Rabi oscillations between ground- and clock states using a three-photon coupling scheme.

20.

Searching for new fundamental interactions via isotopic shifts in molecular lattice clocks

One could place limits on new gravitylike forces using isotope shifts measured by a molecular lattice clock.

19.

Accurate Determination of Blackbody Radiation Shifts in a Strontium Molecular Lattice Clock

By directly measuring dynamic polarizabilities, we can control the blackbody radiation shifts in a molecular lattice clock to the 10-16 level.

18.

Active stabilization of kilogauss magnetic fields to the ppm level for magnetoassociation on ultranarrow Feshbach resonances

We actively stabilize a magnetic field of over a thousand gauss to two parts per million — and have the microwave atomic spectra to prove it.

17.

Analytic approximations to the strengths of near-threshold optical Feshbach resonances

The strengths of photoassociation lines can be written down in terms of analytic formulas. Also, the Rabi oscillation frequency for an optically driven atom pair in a lattice site follows a scaling law.

16.

Terahertz Vibrational Molecular Clock with Systematic Uncertainty at the 10-14 Level

We demonstrate a molecular lattice clock operating on a Raman transition between the least- and most deeply bound state of the strontium dimer.

15.

Quantum chaos in Feshbach resonances of the ErYb system

The anisotropic interaction between erbium and ytterbium atoms gives rise to Feshbach resonances that could allow molecule formation. Also, the Feshbach spectrum exhibits quantum chaos.

14.

Weakly bound molecules as sensors of new gravitylike forces

Yukawa-type non-Newtonian gravity modifies the long-range atomic interactions in a manner detectable by a molecular lattice clock.

13.

Modeling the electronic structures of the ground and excited states of the ytterbium atom and the ytterbium dimer: A modern quantum chemistry perspective

The ytterbium atom, with its half-filled inner electronic shell, makes calculating interatomic potentials a challenge to modern quantum chemistry. Here we present new ground- and excited-state potentials for the ytterbium dimer.

12.

Guidelines for developing optical clocks with 10-18 fractional frequency uncertainty

We collect advice on how to build 10-18 atomic lattice clocks.

11.

Optical Lattice Clocks with Weakly Bound Molecules

We propose a new type of molecular lattice clock based on electronic transitions between levels in the ground- and clock-state potentials.

10.

Optical Feshbach resonances and ground-state-molecule production in the RbHg system

We show how to photoassociate ultracold RbHg molecules and then how to bring them to the rovibrational ground state via STIRAP.

9.

Beyond-Born-Oppenheimer effects in sub-kHz-precision photoassociation spectroscopy of ytterbium atoms

We show how Beyond-Born-Oppenheimer effects modify the mass-scaling behavior of near-threshold levels in ultracold ytterbium dimers.

8.

Self-referenced, accurate and sensitive optical frequency comb spectroscopy with a virtually imaged phased array spectrometer

We present a cavity-enhanced optical frequency comb spectrometer using a virtually imaged phased array (VIPA) spectrometer.

7.

Interactions and collisions of discrete breathers in two-species Bose-Einstein condensates in optical lattices

We simulate the fate of two travelling breathers colliding, each composed of a different atomic species. The outcome depends dramatically on the interspecies scattering length.

6.

Mass scaling and nonadiabatic effects in photoassociation spectroscopy of ultracold strontium atoms

We report new 86Sr photoassociation lines and reveal a rich complexity in the mass scaling of 1S0+3P1 levels of the strontium dimer.

5.

Scattering lengths in isotopologues of the RbYb system

We use two-color photoassociation spectroscopy to determine the s-wave scattering lengths for all isotopic combinations of rubidium and ytterbium.

4.

Controlled production of subradiant states of a diatomic molecule in an optical lattice

First demonstration of ultracold subradiant molecules in an optical lattice.

3.

Photoassociative production of ultracold heteronuclear ytterbium molecules

Photoassociation spectroscopy of ultracold mixed-isotope ytterbium dimers.

2.

A compact magneto-optical trap apparatus for calcium

We report a working calcium MOT apparatus, operating on the 423-nm cooling transition.

1.

Line shapes of optical Feshbach resonances in bosonic ytterbium

About

See my full resume here.

By directly measuring dynamic polarizabilities, we can control the blackbody radiation shifts in a molecular lattice clock to the 10^-16 level.

Terahertz Vibrational Molecular Clock with Systematic Uncertainty at the 10^-14 Level

Guidelines for developing optical clocks with 10^-18 fractional frequency uncertainty

We collect advice on how to build 10^-18 atomic lattice clocks.

We report new ⁸⁶Sr photoassociation lines and reveal a rich complexity in the mass scaling of ¹S₀+³P₁ levels of the strontium dimer.