Publications

Here you find publications from our group. You can also check out Witlef’s google scholar, ORCID, or scopus site for a more complete list.

Directly jump to peer-reviewed articles, popular science articles, and theses.

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Pre-prints

• Macroscopic Quantum Interference of the Center-of-Mass Motion of Levitated Superconducting Microparticles enabled by Magnetic Higher-Order Traps
  Jaume Cunill-Subiranas, Fabian Resare, Suocheng Zhao, Sofia Qvarfort, A. Metelmann, Carles Navau, Witlef Wieczorek
  arXiv:2607.03622 [quant-ph] (2026)
• Magnetic Omniconversion: Source-Independent Molding of Magnetostatic Fields
  Jaume Cunill-Subiranas, Natanael Bort-Soldevila, Fabian Resare, Nuria Del-Valle, Witlef Wieczorek, Carles Navau
  arxiv:2603.01155 [physics.app-ph] (2026)
• Efficient flip-chip and on-chip-based modulation of flux-tunable superconducting resonators
  Achintya Paradkar, Paul Nicaise, Karim Dakroury, Fabian Resare, Christian Dejaco, Lukas Deeg, Gerhard Kirchmair, Witlef Wieczorek
  arXiv: 2512.23119 [quant-ph] (2025); data: 10.5281/zenodo.18079253

Peer-reviewed articles

2026

• Nonlinear quantum optomechanics in a Fano-mirror microcavity system
  Lei Du, Juliette Monsel, Witlef Wieczorek, Janine Splettstoesser
  Quantum Science and Technology 11, 035035 (2026); arXiv:2602.20085 [quant-ph] (2026)

2025

• Modification of adhesion between microparticles and engineered silicon surfaces
  Fabian Resare, Somiya Islam Soke, Witlef Wieczorek
  J. Appl. Phys. 138, 225304 (2025); arXiv:2508.13887 [physics.app-ph] (2025); data: 10.5281/zenodo.16902268
• Ultrathin 3R-MoS2 metasurfaces with atomically precise edges for efficient nonlinear nanophotonics
  George Zograf, Betül Küçüköz, Alexander Yu. Polyakov, Andrew B. Yankovich, Alok Ranjan, Maria Bancerek, Abhay V. Agrawal, Eva Olsson, Witlef Wieczorek, Tomasz J. Antosiewicz, Timur O. Shegai
  Communications Physics 8, 271 (2025); arXiv:2410.20960 [physics.optics] (2024)
• Membrane phononic crystals for high-Q_m mechanical defect modes at MHz frequencies in piezoelectric aluminum nitride
  Anastasiia Ciers, Laurentius Radit Nindito, Alexander Jung, Hannes Pfeifer, Armin Dadgar, Andre Strittmatter, Witlef Wieczorek
  Appl. Phys. Lett. 126, 253503 (2025); arXiv:2501.19151 [physics.app-ph] (2025), data: 10.5281/zenodo.14778127
• Superconducting flip-chip devices using indium microspheres on Au-passivated Nb or NbN as under-bump metallization layer
  Achintya Paradkar, Paul Nicaise, Karim Dakroury, Fabian Resare, Witlef Wieczorek
  Appl. Phys. Lett. 126, 022601 (2025) [on the cover of volume 126, issue 2]; arXiv:2408.14655v1 [cond-mat.supr-con] (2024); data: 10.5281/zenodo.13377107
• Coherent feedback control for cavity optomechanical systems with a frequency-dependent mirror
  Lei Du, Juliette Monsel, Witlef Wieczorek, Janine Splettstoesser
  Phys. Rev. A 111, 013506 (2025); arXiv:2405.13624 [quant-ph] (2024)

2024

• Thickness dependence of the mechanical properties of piezoelectric high-Q_m nanomechanical resonators made from aluminium nitride
  Anastasiia Ciers, Alexander Jung, Joachim Ciers, Laurentius Radit Nindito, Hannes Pfeifer, Armin Dadgar, Jürgen Bläsing, André Strittmatter, Witlef Wieczorek
  Materials for Quantum Technology 4, 046301 (2024) [included in focus on Opto- and Electromechanical Systems]; arXiv:2410.03944 [cond-mat.mes-hall] (2024); data: 10.5281/zenodo.13890719
• Modeling magnetically levitated superconducting ellipsoids, cylinders, and cuboids for quantum magnetomechanics
  Natanael Bort-Soldevila, Jaume Cunill-Subiranas, Nuria Del-Valle, Witlef Wieczorek, Gerard Higgins, Michael Trupke, Carles Navau
  Phys. Rev. Research 6, 043046 (2024); arXiv:2404.05710 [physics.app-ph] (2024).
• Nanomechanical crystalline AlN resonators with high quality factors for quantum optoelectromechanics
  Anastasiia Ciers, Alexander Jung, Joachim Ciers, Laurentius Radit Nindito, Hannes Pfeifer, Armin Dadgar, Andre Strittmatter, Witlef Wieczorek
  Advanced Materials 36, 2403155 (2024); arXiv:2402.12196 [cond-mat.mes-hall] (2024).; data: 10.5281/zenodo.10679216
  Mentioned in Physik Journal 1/2025, Chalmers press release
• Dissipative and dispersive cavity optomechanics with a frequency-dependent mirror
  Juliette Monsel, Anastasiia Ciers, Sushanth Kini Manjeshwar, Witlef Wieczorek, Janine Splettstoesser
  Phys. Rev. A 109, 043532 (2024); arXiv:2311.15311 [physics.optics] (2023).
• Quasibound states in the continuum in photonic-crystal-based optomechanical microcavities
  Cindy Peralle, Sushanth Kini Manjeshwar, Anastasiia Ciers, Witlef Wieczorek, Philippe Tassin
  Phys. Rev. B 109, 035407 (2024); arXiv:2306.17831 [physics.optics] (2023).

2023

• Localization and interaction of interlayer excitons in MoSe2/WSe2 heterobilayers
  Hanlin Fang, Qiaoling Lin, Yi Zhang, Joshua Thompson, Sanshui Xiao, Zhipei Sun, Ermin Malic, Saroj Dash, Witlef Wieczorek
  Nature Communications 14, 6910 (2023); arXiv:2307.03842 [cond-mat.mes-hall] (2023)
  Mentioned in attocube’s newsletter May 2024
• Integrated microcavity optomechanics with a suspended photonic crystal mirror above a distributed Bragg reflector
  Sushanth Kini Manjeshwar, Anastasiia Ciers, Juliette Monsel, Hannes Pfeifer, Cindy Peralle, Shu Min Wang, Philippe Tassin, Witlef Wieczorek
  Optics Express 31, 30212 (2023); arXiv:2305.13511 [physics.optics] (2023)
  Highlighted in Spotlight on Optics
• High-Q magnetic levitation and control of superconducting microspheres at millikelvin temperatures
  Joachim Hofer, Rudolf Gross, Gerard Higgins, Hans Huebl, Oliver F. Kieler, Reinhold Kleiner, Dieter Koelle, Philip Schmidt, Joshua A. Slater, Michael Trupke, Kevin Uhl, Thomas Weimann, Witlef Wieczorek, Markus Aspelmeyer,
  Phys. Rev. Lett. 131, 043603 (2023), arXiv:2211.06289 [quant-ph] (2022)
• High-Q Trampoline Resonators from Strained Crystalline InGaP for Integrated Free-Space Optomechanics
  Sushanth Kini Manjeshwar, Anastasiia Ciers, Fia Hellman, Jürgen Bläsing, André Strittmater, Witlef Wieczorek,
  Nano Lett. 23, 5076 (2023), arXiv:2211.12469 [physics.app-ph] (2022)
• Superconducting microsphere magnetically levitated in an anharmonic potential with integrated magnetic readout
  Martí Gutierrez Latorre, Gerard Higgins, Achintya Paradkar, Thilo Bauch, Witlef Wieczorek,
  Phys. Rev. Applied 19, 054047 (2023) [Editor’s suggestion], arXiv:2210.13451 [quant-ph] (2022)
  Highlighted as a Research update in physicsworld; highlighted in LeviNets newsletter

2022

• A chip-based superconducting magnetic trap for levitating superconducting microparticles
  Martí Gutierrez Latorre, Achintya Paradkar, David Hambraeus, Gerard Higgins, Witlef Wieczorek
  IEEE Transactions on Applied Superconductivity 32, 1800305 (2022), arXiv:2109.15071 [cond-mat.supr-con] (2021)
• Valley-exchange coupling probed by angle-resolved photoluminescence
  Joshua J. P. Thompson, Samuel Brem, Hanlin Fang, Carlos Antón-Solanas, Bo Han, Hangyong Shan, Saroj P. Dash, Witlef Wieczorek, Christian Schneider and Ermin Malic
  Nanoscale Horizons 7, 77-84 (2022), arXiv:2111.10237 [cond-mat.mes-hall]

2021

• Optomechanical cooling with coherent and squeezed light: the thermodynamic cost of opening the heat valve
  Juliette Monsel, Nastaran Dashti, Sushanth Kini Manjeshwar, Jakob Eriksson, Henric Ernbrink, Ebba Olsson, Emelie Torneus, Witlef Wieczorek, Janine Splettstoesser
  Phys. Rev. A 103, 063519 (2021), arXiv:2103.03596 [quant-ph]
• Vibrational signatures for the identification of single-photon emitters in hexagonal boron nitride
  Christopher Linderälv, Witlef Wieczorek, Paul Erhart
  Phys. Rev. B 103, 115421 (2021); arXiv:2008.05817 [cond-mat.mtrl-sci]
• Cavity Optomechanics with Photonic Bound States in the Continuum
  Jamie M. Fitzgerald, Sushanth Kini Manjeshwar, Witlef Wieczorek, Philippe Tassin
  Phys. Rev. Research 3, 013131 (2021); arXiv:2007.07883 [quant-ph]

2020

• Criteria for deterministic single-photon emission in two-dimensional atomic crystals
  Joshua J. P. Thompson, Samuel Brem, Hanlin Fang, Joey Frey, Saroj P. Dash, Witlef Wieczorek, and Ermin Malic
  Phys. Rev. Materials 4, 084006 (2020); arXiv:2008.10501 [cond-mat.mes-hall]
• Suspended photonic crystal membranes in AlGaAs heterostructures for integrated multi-element optomechanics
  Sushanth Kini Manjeshwar, Karim Elkhouly, Jamie M. Fitzgerald, Martin Ekman, Yanchao Zhang, Fan Zhang, Shu Min Wang, Philippe Tassin, Witlef Wieczorek
  Appl. Phys. Lett. 116, 264001 (2020); arXiv:2004.12454 [physics.app-ph]; MC2 news article
• Chip-based superconducting traps for levitation of micrometer-sized particles in the Meissner state
  Martí Gutierrez Latorre, Joachim Hofer, Matthias Rudolph, Witlef Wieczorek
  Supercond. Sci. Technol. 33, 105002 (2020); arXiv:2002.03868 [physics.app-ph]
• Stationary optomechanical entanglement between a mechanical oscillator and its measurement apparatus
  C. Gut, K. Winkler, J. Hoelscher-Obermaier, S. G. Hofer, R. Moghadas Nia, N. Walk, A. Steffens, J. Eisert, W. Wieczorek, J. A. Slater, M. Aspelmeyer, K. Hammerer
  Phys. Rev. Research 2, 033244 (2020); arXiv:1912.01635 [quant-ph]
• Geometric Scaling of Two-Level-System Loss in Superconducting Resonators
  David Niepce, Jonathan Burnett, Martí Gutierrez Latorre, Jonas Bylander
  Supercond. Sci. Technol. 33 025013 (2020); arXiv:1908.02606 [physics.app-ph]

2019

• Optimal Control of Hybrid Optomechanical Systems for Generating Non-Classical States of Mechanical Motion
  Ville Bergholm, Witlef Wieczorek, Thomas Schulte-Herbrueggen, Michael Keyl
  Quantum Science and Technology 4, 034001 (2019); arXiv:1812.06042

2018

• Experimental Determination of Irreversible Entropy Production in out-of-Equilibrium Mesoscopic Quantum Systems
  M. Brunelli, L. Fusco, R. Landig, W. Wieczorek, J. Hoelscher-Obermaier, G. Landi, F. L. Semião, A. Ferraro, N. Kiesel, T. Donner, G. De Chiara, and M. Paternostro
  Phys. Rev. Lett. 121, 160604 (2018); arXiv:1602.06958 [quant-ph]
• Electro-mechanical Casimir effect
  M. Sanz, W. Wieczorek, S. Gröblacher, E. Solano
  Quantum 2, 91 (2018); arXiv:1712.08060 [quant-ph]

2017

• Ultrasensitive Inertial and Force Sensors with Diamagnetically Levitated Magnets
  J. Prat-Camps, C. Teo, C. C. Rusconi, W. Wieczorek, O. Romero-Isart
  Phys. Rev. Applied 8, 034002 (2017); arXiv:1703.00221 [quant-ph]

2015

• Optimal State Estimation for Cavity Optomechanical Systems
  W. Wieczorek, S. G. Hofer, J. Hoelscher-Obermaier, R. Riedinger, K. Hammerer, M. Aspelmeyer
  Phys. Rev. Lett. 114, 223601 (2015); arXiv:1505.01060 [quant-ph]

2014

• Tensile strained In_xGa_1-xP membranes for cavity optomechanics
  G. D. Cole, P.-L. Yu, C. Gärtner, K. Siquans, R. M. Nia, J. Schmöle, J. Hoelscher-Obermaier, T. P. Purdy, W. Wieczorek, C. A. Regal, M. Aspelmeyer
  Appl. Phys. Lett. 104, 201908 (2014); arXiv:1404.0029 [quant-ph]

2013

• Highly efficient heralding of entangled single photons
  S. Ramelow, A. Mech, M. Giustina, S. Gröblacher, W. Wieczorek, J. Beyer, A. Lita, B. Calkins, T. Gerrits, S. W. Nam, A. Zeilinger, R. Ursin
  Optics Express 21, 6, 6707-6717 (2013); arXiv:1211.5059 [quant-ph]

2011

• Quantum entanglement and teleportation in pulsed cavity optomechanics
  S. G. Hofer, W. Wieczorek, M. Aspelmeyer, K. Hammerer
  Phys. Rev. A 84, 052327, 1-10 (2011); arXiv:1108.2586
• Useful Multiparticle Entanglement and Sub-Shot-Noise Sensitivity in Experimental Phase Estimation
  R. Krischek, C. Schwemmer, W. Wieczorek, H. Weinfurter, P. Hyllus, L. Pezze, A. Smerzi
  Phys. Rev. Lett. 107, 080504 (2011); arXiv:1108.6002 [quant-ph]

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Popular science articles

• Licht macht Druck
  N. Kiesel, W. Wieczorek, S. Gröblacher, M. Aspelmeyer
  Physik in unserer Zeit 6, 276-284 (2011) 

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Theses

PhD theses

• Achintya Paradkar, Coupling a Flux-Tunable Resonator to a Magnetically Levitated Superconducting Microparticle, 2026, PhD thesis, Chalmers
• Sushanth Kini Manjeshwar, Free-space cavity optomechanical systems on a chip with III-V heterostructures, 2023, PhD thesis, Chalmers
• Martí Gutierrez Latorre, Chip-based magnetic levitation of superconducting microparticles, 2023, PhD thesis, Chalmers

Master theses

• Einar Carlsson, Master thesis, Development of Acoustic Metamaterial Vibrational Shields for Application at Cryogenic Temperatures, 2026, Chalmers
• Rishab Ramanathan, Master thesis, Noise characterization and frequency-locking of superconducting flux-tunable resonators, 2026, Chalmers
• Johanna Örgård, Master thesis, A vacuum integrated fibre Fabry-Pérot cavity setup for optical and optomechanical characterisation, 2025, Chalmers
• Somiya Islam Soke, Master thesis, Surface modifications of silicon chips to reduce the adhesion force of metallic microparticles, 2025, Chalmers/GU
• Laurentius Radit Nindito, Master thesis, Tensile-strained crystalline aluminium nitride nanomechanical resonators, 2024, Chalmers
• Karim Dakroury, Master thesis, Superconducting flux transformers for the modulation of flux-tunable resonators, 2024, Chalmers
• Anton Söderqvist, Master thesis, Cryogenic Vibration Isolation For Low Frequency Levitation Experiments, 2023, University of Glasgow and Chalmers
• Fia Hellman, Master thesis, Tensile-strained micromechanical resonators made from crystalline InGaP with low mechanical dissipation and high optical reflectivity, 2022, Chalmers
• Avan Mirkhan, Master thesis, Towards flux-tunable superconducting coplanar waveguide resonators for inductive coupling to levitated superconducting particles, 2022, Chalmers
• Johan Kolvik, Master thesis, Towards cavity optomechanics with integrated multi-element mechanical resonators, 2021, Chalmers
• Joey Frey, Master thesis, Optical characterisation of two-dimensional WSe2 flakes for quantum light emission, June 2020, Chalmers
• Karim Elkhouly, Master thesis, High Reflectivity GaAs-based Photonic Crystal Reflectors for Cavity Optomechanics, August 2019, Chalmers

Bachelor theses

• Jakob Eriksson, Henric Ernbrink, Ebba Olsson, Emelie Torneus, Bachelor thesis, A nano-optomechanical refrigerator: Quantifying the thermodynamic performance of sideband cooling, May 2019, Chalmers/Gothenburg University