Publications

2025

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Al Hyder, R., Colussi, V., Cufar, M., Brand, J., Recati, A. & Bruun, G. (2025). Lattice Bose polarons at strong coupling and quantum criticality. SciPost Physics, 19(1), Artikel 002. https://doi.org/10.21468/SciPostPhys.19.1.002

Knakkergaard Nielsen, K., Zwierlein, M. & Bruun, G. (2025). Dual Spectroscopy of Quantum Simulated Fermi-Hubbard Systems. Physical Review Letters, 135(4), Artikel 043401. https://doi.org/10.1103/yfqr-y9ks

Kruk, M. B., Kulik, P., Andersen, R. M. F., Deuar, P., Gajda, M., Pawłowski, K., Witkowska, E., Arlt, J. J. & Rzążewski, K. (2025). On the fluctuations of the number of atoms in the condensate. Reports on Progress in Physics, 88(10), Artikel 106401. https://doi.org/10.1088/1361-6633/ae0e33

Massignan, P., Schmidt, R., Astrakharchik, G. E., İmamoglu, A., Zwierlein, M., Arlt, J. J. & Bruun, G. M. (2025). Polarons in atomic gases and two-dimensional semiconductors. Advance online publication.

Morgen, A. M., Balling, S. S., Nielsen, K. K., Pohl, T., Bruun, G. M. & Arlt, J. J. (2025). Quantum beat spectroscopy of repulsive Bose polarons. Physical Review Research , 7(2), Artikel L022002. https://doi.org/10.48550/arXiv.2310.18183, https://doi.org/10.1103/PhysRevResearch.7.L022002

Morgen, A. M., Balling, S. S., Strøe, M. T., Skov, T. G., Skou, M. R., Volosniev, A. G. & Arlt, J. J. (2025). Three-body Physics in the Impurity Limit of 39K Bose-Einstein Condensates. Physical Review A, 111, Artikel 063314. https://doi.org/10.1103/54hb-ksqx, https://doi.org/10.48550/arXiv.2503.13129

Nyhegn, J. H., Nielsen, K. K. & Bruun, G. M. (2025). Probing a quantum spin liquid with equilibrium and nonequilibrium hole dynamics. Physical Review B, 111(3), Artikel 035142. https://doi.org/10.1103/PhysRevB.111.035142

Nyhegn, J. H., Nielsen, K., Balents, L. & Bruun, G. (2025). Spin-Charge Bound States and Emerging Fermions in a Quantum Spin Liquid. PRX Quantum, 6(4), 1. Artikel 040347. https://doi.org/10.1103/w23h-dhrk

Shi, R., Drewsen, M. & Pérez-Ríos, J. (2025). Effects of the delocalized charge distribution in trapped ion-atom collisions. Communications Physics, 8(1), Artikel 479. https://doi.org/10.1038/s42005-025-02381-x

Vashisht, A., Amelio, I., Vanderstraeten, L., Bruun, G., Diessel, O. & Goldman, N. (2025). Chiral polaron formation on the edge of topological quantum matter. Nature Communications, 16(1), 1. Artikel 4918. https://doi.org/10.1038/s41467-025-60166-w

Yang, F., Yarloo, H., Zhang, H. C., Mølmer, K. & Nielsen, A. E. B. (2025). Probing Hilbert space fragmentation with strongly interacting Rydberg atoms. Physical Review B, 111(14), Artikel 144313. https://doi.org/10.1103/PhysRevB.111.144313

2024

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Baroni, C., Huang, B., Fritsche, I., Dobler, E., anich, G., Kirilov, E., Grimm, R., Bastarrachea Magnani, M. A., Massignan , P. & Bruun, G. (2024). Mediated interactions between Fermi polarons and the role of impurity quantum statistics. Nature Physics, 20(1), 68-73. Artikel 68. https://doi.org/10.1038/s41567-023-02248-4

Biss, H., Sobirey, L., Luick, N., Bohlen, M., Kinnunen, J. J., Bruun, G. M., Lompe, T. & Moritz, H. (2024). Biss et al. Reply. Physical Review Letters, 133(10), Artikel 109302. https://doi.org/10.1103/PhysRevLett.133.109302

Camacho-Guardian, A., Bruun, G. & Paredes, R. (2024). Interactions mediated by atoms, photons, electrons, and excitons. Physical Review A, 110(3), Artikel 030101. https://doi.org/10.1103/PhysRevA.110.030101

Christensen, E. R., Camacho-Guardin, A., Cotlet, O., Imamoglu, A., wouters, M., Bruun, G. & Carusotto, I. (2024). Microscopic theory of polariton-polariton interactions. Physical Review B, 110(19), Artikel 195435. https://doi.org/10.1103/PhysRevB.110.195435

Christiansen, V. R., Lund, M. M., Yang, F. & Mølmer, K. (2024). Jaynes-Cummings interaction with a traveling light pulse. Journal of the Optical Society of America B: Optical Physics, 41(8), C140-C147. https://doi.org/10.1364/JOSAB.523292

Julku, A. J., Ding, S. & Bruun, G. (2024). Exciton interacting with a moiré lattice: Polarons, strings, and optical probing of spin correlations. Physical Review Research , 6(3), Artikel 033119. https://doi.org/10.1103/PhysRevResearch.6.033119

Lund, M. M., Yang, F., Christiansen, V. R., Kornovan, D. & Mølmer, K. (2024). Subtraction and Addition of Propagating Photons by Two-Level Emitters. ArXiv. https://doi.org/10.48550/arXiv.2404.12328

Lund, M. M., Yang, F., Christiansen, V. R., Kornovan, D. & Mølmer, K. (2024). Subtraction and Addition of Propagating Photons by Two-Level Emitters. Physical Review Letters, 133(10), Artikel 103601. https://doi.org/10.1103/PhysRevLett.133.103601

Panyella Pedersen, S., Bruun, G. & Pohl, T. (2024). Green's function approach to interacting lattice polaritons and optical nonlinearities in subwavelength arrays of quantum emitters. Physical Review Research , 6(4), Artikel 043264. https://doi.org/10.1103/PhysRevResearch.6.043264

Sheng, X., Davidson, N., Bruun, G., Sun, M. & Wu, Z. (2024). Strongly Interacting Bose-Fermi Mixtures: Mediated Interaction, Phase Diagram, and Sound Propagation. Physical Review Letters, 132(3), Artikel 033401. https://doi.org/10.1103/PhysRevLett.132.033401

Tziperman, O., Christiansen, V. R., Kaminer, I. & Mølmer, K. (2024). Parametric amplification of a quantum pulse. Physical Review A, 110(5), Artikel 053712. https://doi.org/10.1103/PhysRevA.110.053712

Vibel, T., Christensen, M. B., Kristensen, M. A., Thuesen, J. J., Stokholm, L. N., Weidner, C. A. & Arlt, J. J. (2024). Spatial calibration of high-density absorption imaging. Journal of Physics B: Atomic, Molecular and Optical Physics, 57(14), Artikel 145301. https://doi.org/10.1088/1361-6455/ad53ae

Vibel, T., Christensen, M. B., Andersen, R. M. F., Stokholm, L. N., Pawlowski, K., Rzazewski, K., Kristensen, M. & Arlt, J. J. (2024). Atom Number Fluctuations in Bose Gases - Statistical analysis of parameter estimation. Journal of Physics B: Atomic, Molecular and Optical Physics, 57(19), Artikel 195301. https://doi.org/10.1088/1361-6455/ad7458

2023

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Sánchez-Baena, J., Politi, C., Maucher, F., Ferlaino, F. & Pohl, T. (2023). Heating a dipolar quantum fluid into a solid. Nature Communications, 14(1), Artikel 1868. https://doi.org/10.1038/s41467-023-37207-3

Pedersen, S. P., Zhang, L. & Pohl, T. (2023). Quantum nonlinear metasurfaces from dual arrays of ultracold atoms. Physical Review Research , 5(1), Artikel L012047. https://doi.org/10.1103/PhysRevResearch.5.L012047

Pedersen, S. P. (2023). Nonlinear Quantum Optics in an Atomic Cavity: Towards a quantum fluid of light. [Ph.d.-afhandling, Aarhus Universitet]. Institut for Fysik og Astronomi, Aarhus Universitet.

Nyhegn, J. H., Bruun, G. M. & Nielsen, K. K. (2023). Wave function and spatial structure of polarons in an antiferromagnetic bilayer. Physical Review B, 108(7), Artikel 075141. https://doi.org/10.1103/PhysRevB.108.075141

Lund, M. M., Yang, F. & Mølmer, K. (2023). Perfect splitting of a two-photon pulse. Physical Review A, 107(2), Artikel 023715. https://doi.org/10.1103/PhysRevA.107.023715

Lenler-Eriksen, E., Drewsen, M. & Carlesso, M. (2023). Testing Continuous Spontaneous Localization model with charged macro-molecules.

Kruk, M. B., Hryniuk, D., Kristensen, M., Vibel, T., Pawłowski, K., Arlt, J. & Rzazewski, K. (2023). Microcanonical and canonical fluctuations in atomic Bose-Einstein condensates: Fock state sampling approach. SciPost Physics, 14(3), Artikel 036. https://doi.org/10.21468/SciPostPhys.14.3.036

Kruk, M. B., Vibel, T., Arlt, J., Kulik, P., Pawłowski, K. & Rzążewski, K. (2023). Fock State Sampling Method - Characteristic Temperature of Maximal Fluctuations for Interacting Bosons in Box Potentials. Acta Physica Polonica A, 143(6), S171-S178. https://doi.org/10.12693/APhysPolA.143.S171

Khanahmadi, M. & Mølmer, K. (2023). Qubit readout and quantum sensing with pulses of quantum radiation. Physical Review A, 107(1), Artikel 013705. https://doi.org/10.1103/PhysRevA.107.013705

Julku, A. J., Ding, S. & Bruun, G. (2023). An exciton interacting with a moire lattice -- polarons, strings, and optical probing of spin correlations. (2311.03482 udg.) https://doi.org/10.48550/arXiv.2311.03482

Ding, S., Domínguez-Castro, G. A., Julku, A., Camacho-Guardian, A. & Bruun, G. M. (2023). Polarons and bipolarons in a two-dimensional square lattice. SciPost Physics, 14(6), Artikel A3. https://doi.org/10.21468/SciPostPhys.14.6.143

Christiansen, V. R., Kiilerich, A. H. & Mølmer, K. (2023). Interactions of quantum systems with pulses of quantized radiation: From a cascaded master equation to a traveling mode perspective. Physical Review A, 107(1), Artikel 013706. https://doi.org/10.1103/PhysRevA.107.013706

2022

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Zhang, Y., Shan, C. & Mølmer, K. (2022). Active Frequency Measurement on Superradiant Strontium Clock Transitions. Physical Review Letters, 128(1), Artikel 013604. https://doi.org/10.1103/PhysRevLett.128.013604

Zhang, Y. X. & Mølmer, K. (2022). Free-Fermion Multiply Excited Eigenstates and Their Experimental Signatures in 1D Arrays of Two-Level Atoms. Physical Review Letters, 128(9), Artikel 093602. https://doi.org/10.1103/PhysRevLett.128.093602

Zhang, Y., Wu, Q., Su, S. L., Lou, Q., Shan, C. & Mølmer, K. (2022). Cavity Quantum Electrodynamics Effects with Nitrogen Vacancy Center Spins Coupled to Room Temperature Microwave Resonators. Physical Review Letters, 128(25), Artikel 253601. https://doi.org/10.1103/PhysRevLett.128.253601

Zhang, L., Walther, V., Mølmer, K. & Pohl, T. (2022). Photon-photon interactions in Rydberg-atom arrays. Quantum, 6. https://doi.org/10.22331/Q-2022-03-30-674

Zhang, Y., Wu, Q., Wu, H., Yang, X., Su, S. L., Shan, C. & Mølmer, K. (2022). Microwave mode cooling and cavity quantum electrodynamics effects at room temperature with optically cooled nitrogen-vacancy center spins. Quantum Information and Computation, 8(1), Artikel 125. https://doi.org/10.1038/s41534-022-00642-z

Yang, F., Lund, M. M., Pohl, T., Lodahl, P. & Mølmer, K. (2022). Deterministic Photon Sorting in Waveguide QED Systems. Physical Review Letters, 128(21), Artikel 213603. https://doi.org/10.1103/PhysRevLett.128.213603

Wu, Q., Zhang, Y., Yang, X., Su, S. L., Shan, C. & Mølmer, K. (2022). A superradiant maser with nitrogen-vacancy center spins. Science China: Physics, Mechanics and Astronomy, 65(1), Artikel 217311. https://doi.org/10.1007/s11433-021-1780-6

Wu, X., Yang, F., Yang, S., Mølmer, K., Pohl, T., Tey, M. K. & You, L. (2022). Manipulating synthetic gauge fluxes via multicolor dressing of Rydberg-atom arrays. Physical Review Research , 4(3), Artikel L032046. https://doi.org/10.1103/PhysRevResearch.4.L032046

Van De Kraats, J., Nielsen, K. K. & Bruun, G. M. (2022). Holes and magnetic polarons in a triangular lattice antiferromagnet. Physical Review B, 106(23), Artikel 235143. https://doi.org/10.1103/PhysRevB.106.235143

Tzortzakakis, A. F., Petrosyan, D., Fleischhauer, M. & Mølmer, K. (2022). Microscopic dynamics and an effective Landau-Zener transition in the quasiadiabatic preparation of spatially ordered states of Rydberg excitations. Physical Review A, 106(6), Artikel 063302. https://doi.org/10.1103/PhysRevA.106.063302

Skou, M. G., Nielsen, K. K., Skov, T. G., Morgen, A. M., Jørgensen, N. B., Camacho-Guardian, A., Pohl, T., Bruun, G. M. & Arlt, J. J. (2022). Life and death of the Bose polaron. Physical Review Research , 4(4), Artikel 043093. https://doi.org/10.1103/PhysRevResearch.4.043093

Patra, A., Buchmann, L. F., Motzoi, F., Mølmer, K., Sherson, J. & Nielsen, A. E. B. (2022). Single-shot determination of quantum phases via continuous measurements. Physical Review A, 106(3), Artikel 032215. https://doi.org/10.1103/PhysRevA.106.032215

O'Sullivan, J. D. B., Kennedy, O. W., Debnath, K., Alexander, J., Zollitsch, C. W., Šimėnas, M., Hashim, A., Thomas, C., Withington, S., Siddiqi, I., Mølmer, K. & Morton, J. J. L. (2022). Random-Access Quantum Memory Using Chirped Pulse Phase Encoding. Physical Review X, 12(4), Artikel 041014. https://doi.org/10.1103/PhysRevX.12.041014

Nyhegn, J. H., Nielsen, K. K. & Bruun, G. M. (2022). Equilibrium and nonequilibrium dynamics of a hole in a bilayer antiferromagnet. Physical Review B, 106(15), Artikel 155160. https://doi.org/10.1103/PhysRevB.106.155160

Nielsen, K. K., Pohl, T. & Bruun, G. M. (2022). Nonequilibrium Hole Dynamics in Antiferromagnets: Damped Strings and Polarons. Physical Review Letters, 129(24), Artikel 246601 . https://doi.org/10.1103/PhysRevLett.129.246601

Kinos, A., Dalgaard, M. & Mølmer, K. (2022). Optical control of the complex phase of a quantum ground-state amplitude. Physical Review A, 105(6), Artikel 062441. https://doi.org/10.1103/PhysRevA.105.062441

Julku, A., Kinnunen, J. J., Camacho-Guardian, A. & Bruun, G. M. (2022). Light-induced topological superconductivity in transition metal dichalcogenide monolayers. Physical Review B, 106(13), Artikel 134510. https://doi.org/10.1103/PhysRevB.106.134510

Jensen, J. H. M. & Mølmer, K. (2022). Gaussian theory for estimating fluctuating perturbations with backaction-evading oscillator variables. Physical Review A - Atomic, Molecular, and Optical Physics, 106(2), Artikel 022613. https://doi.org/10.1103/PhysRevA.106.022613

Ding, S., Drewsen, M., Arlt, J. J. & Bruun, G. M. (2022). Mediated interactions between ions in quantum degenerate gases. Physical Review Letters, 129(15), Artikel 153401 . https://doi.org/10.1103/PhysRevLett.129.153401

Ding, D.-S., Liu, Z.-K., Shi, B.-S., Guo, G.-C., Mølmer, K. & Adams, C. S. (2022). Enhanced metrology at the critical point of a many-body Rydberg atomic system. Nature Physics, 18(12), 1447-1452. https://doi.org/10.1038/s41567-022-01777-8

Clausen, E. H., Jarlaud, V., Fisher, K., Meyer, S., Solaro, C. & Drewsen, M. (2022). Unresolved sideband photon recoil spectroscopy of molecular ions. Physical Review A, 105(6), Artikel 063709. https://doi.org/10.1103/PhysRevA.105.063709

Christensen, E. R., Camacho-Guardian, A. & Bruun, G. (2022). Mobile ion in a Fermi sea. Physical Review A, 105(2), Artikel 023309 . https://doi.org/10.1103/PhysRevA.105.023309

Camacho-Guardian, A., Bastarrachea Magnani, M. A., Pohl, T. & Bruun, G. (2022). Strong photon interactions from weakly interacting particles. Physical Review B, 106(8), Artikel L081302. https://doi.org/10.1103/PhysRevB.106.L081302

Blocher, P. D., Asaad, S., Mourik, V., Johnson, M., Morello, A. & Mølmer, K. (2022). Measuring out-of-time-ordered correlation functions without reversing time evolution. Physical Review A, 106(4), Artikel 042429. https://doi.org/10.1103/PhysRevA.106.042429

Biss, H., Sobirey, L., Luick, N., Bohlen, M., Kinnunen, J., Bruun, G., Lompe, T. & Moritz, H. (2022). Excitation Spectrum and Superfluid Gap of an Ultracold Fermi Gas. Physical Review Letters, 128(10), Artikel 100401. https://doi.org/10.1103/PhysRevLett.128.100401

Andersen, A. L. & Mølmer, K. (2022). Quantum Nondemolition Measurements of Moving Target States. Physical Review Letters, 129(12), Artikel 120402. https://doi.org/10.1103/PhysRevLett.129.120402

Alonso, I., Alpigiani, C., Altschul, B., Araújo, H., Arduini, G., Arlt, J., Badurina, L., Balaž, A., Bandarupally, S., Barish, B. C., Barone, M., Barsanti, M., Bass, S., Bassi, A., Battelier, B., Baynham, C. F. A., Beaufils, Q., Belić, A., Bergé, J. ... Zupanič, E. (2022). Cold atoms in space: community workshop summary and proposed road-map. EPJ Quantum Technology, 9, Artikel 30. https://doi.org/10.1140/epjqt/s40507-022-00147-w

Al Hyder, R. & Bruun, G. (2022). Mobile impurity probing a two-dimensional superfluid phase transition. Physical Review A, 105(6), Artikel 063303. https://doi.org/10.1103/PhysRevA.105.063303