Anton Frisk Kockum, PhD

​

56. Mitigation of frequency collisions in superconducting quantum processors
Amr Osman, Jorge Fernández-Pendás, Chris Warren, Sandoko Kosen, Marco Scigliuzzo, Anton Frisk Kockum, Giovanna Tancredi, Anita Fadavi Roudsari, and Jonas Bylander

Physical Review Research 5, 043001 (2023)

arXiv:2303.04663

​

55. Gaussian conversion protocol for heralded generation of generalized Gottesman-Kitaev-Preskill states
Yu Zheng, Alessandro Ferraro, Anton Frisk Kockum, and Giulia Ferrini

Physical Review A 108, 012603 (2023)

arXiv:2301.10030

​

54. Extensive characterization and implementation of a family of efficient three-qubit gates at the coherence limit
Christopher W. Warren, Jorge Fernández-Pendás, Shahnawaz Ahmed, Tahereh Abad, Andreas Bengtsson, Janka Biznárová, Kamanasish Debnath, Xiu Gu, Christian Krizan, Amr Osman, Anita Fadavi Roudsari, Per Delsing, Göran Johansson, Anton Frisk Kockum, Giovanna Tancredi, and Jonas Bylander

npj Quantum Information 9, 44 (2023)

arXiv:2207.02938​

​

53. Gradient-descent quantum process tomography by learning Kraus operators
Shahnawaz Ahmed, Fernando Quijandría, and Anton Frisk Kockum

Physical Review Letters 130, 150402 (2023)

arXiv:2208.00812

​

52. Transmon qubit readout fidelity at the threshold for quantum error correction without a quantum-limited amplifier
Liangyu Chen, Hang-Xi Li, Yong Lu, Christopher W. Warren, Christian J. Krizan, Sandoko Kosen, Marcus Rommel, Shahnawaz Ahmed, Amr Osman, Janka Biznárová, Anita Fadavi Roudsari, Benjamin Lienhard, Marco Caputo, Kestutis Grigoras, Leif Grönberg, Joonas Govenius, Anton Frisk Kockum, Per Delsing, Jonas Bylander, and Giovanna Tancredi

npj Quantum Information 9, 26 (2023)

arXiv:2208.05879

​

51. Interaction between giant atoms in a one-dimensional structured environment
Ariadna Soro, Carlos Sánchez Muñoz, and Anton Frisk Kockum

Physical Review A 107, 013710 (2023)

arXiv:2208.04102

​

50. Universal fidelity reduction of quantum operations from weak dissipation
Tahereh Abad, Jorge Fernández-Pendás, Anton Frisk Kockum, and Göran Johansson

Physical Review Letters 129, 150504 (2022)

arXiv:2110.15833

​

49. Deterministic loading and phase shaping of microwaves onto a single artificial atom
Wei-Ju Lin, Yong Lu, Ping-Yi Wen, Yu-Ting Chen, Ching-Ping Lee, Kuan-Ting Lin, Kuan-Hsun Chiang, Ming Che Hsieh, Jeng-Chung Chen, C.-S. Chuu, Franco Nori, Anton Frisk Kockum, Guin-Dar Lin, Per Delsing, and Io-Chun Hoi

Nano Letters 22, 8137 (2022)

arXiv:2012.15084

​

48. Robust preparation of Wigner-negative states with optimized SNAP-displacement sequences
Marina Kudra, Mikael Kervinen, Ingrid Strandberg, Shahnawaz Ahmed, Marco Scigliuzzo, Amr Osman, Daniel Pérez Lozano, Mats O. Tholén, Riccardo Borgani, David B. Haviland, Giulia Ferrini, Jonas Bylander, Anton Frisk Kockum, Fernando Quijandría, Per Delsing, and Simone Gasparinetti

PRX Quantum 3, 030301 (2022)

Selected as an Editors' Suggestion

arXiv:2111.07965

​

47. Building blocks of a flip-chip integrated superconducting quantum processor
Sandoko Kosen, Hang-Xi Li, Marcus Rommel, Daryoush Shiri, Christopher Warren, Leif Grönberg, Jaakko Salonen, Tahereh Abad, Janka Biznárová, Marco Caputo, Liangyu Chen, Kestutis Grigoras, Göran Johansson, Anton Frisk Kockum, Christian Križan, Daniel Pérez Lozano, Graham Norris, Amr Osman, Jorge Fernández-Pendás, Anita Fadavi Roudsari, Slawomir Simbierowicz, Giovanna Tancredi, Andreas Wallraff, Christopher Eichler, Joonas Govenius, and Jonas Bylander

Quantum Science and Technology 7, 035018 (2022)

arXiv:2112.02717

​

46. Giant atoms in a synthetic frequency dimension
Lei Du, Yan Zhang, Jin-Hui Wu, Anton Frisk Kockum, and Yong Li

Physical Review Letters 128, 223602 (2022)

arXiv:2111.05584

​

45. The XYZ^2 hexagonal stabilizer code
Basudha Srivastava, Anton Frisk Kockum, and Mats Granath

Quantum 6, 698 (2022)

arXiv:2112.06036

​

44. Error-rate-agnostic decoding of topological stabilizer codes
Karl Hammar, Alexei Orekhov, Patrik Wallin Hybelius, Anna Katariina Wisakanto, Basudha Srivastava, Anton Frisk Kockum, and Mats Granath

Physical Review A 105, 042616 (2022)

arXiv:2112.01977

​

43. Deterministic one-way logic gates on a cloud quantum computer
Zhi-Peng Yang, Alakesh Baishya, Huan-Yu Ku, Yu-Ran Zhang, Anton Frisk Kockum, Yueh-Nan Chen, Fu-Li Li, Jaw-Shen Tsai, and Franco Nori

Physical Review A 105, 042610 (2022)

arXiv:2108.03865

​

42. Steady-state heat transport and work with a single artificial atom coupled to a waveguide: emission without external driving
Yong Lu, Neill Lambert, Anton Frisk Kockum, Ken Funo, Andreas Bengtsson, Simone Gasparinetti, Franco Nori, and Per Delsing

PRX Quantum 3, 020305 (2022)

arXiv:2107.12700

​

41. Organic charged polaritons in the ultrastrong coupling regime
Mao Wang, Suman Mallick, Anton Frisk Kockum, and Karl Börjesson

Physical Review Research 4, 023016 (2022)

arXiv:2108.13901

​

40. Revealing higher-order light and matter energy exchanges using quantum trajectories in ultrastrong coupling
Vincenzo Macrì, Fabrizio Minganti, Anton Frisk Kockum, Alessandro Ridolfo, Salvatore Savasta, and Franco Nori

Physical Review A 105, 023720 (2022)

arXiv:2107.08759

​

39. Chiral quantum optics with giant atoms
Ariadna Soro and Anton Frisk Kockum

Physical Review A 105, 023712 (2022)

arXiv:2106.11946

​

38. Fast multi-qubit gates through simultaneous two-qubit gates
Xiu Gu, Jorge Fernández-Pendás, Pontus Vikstål, Tahereh Abad, Christopher Warren, Andreas Bengtsson, Giovanna Tancredi, Vitaly Shumeiko, Jonas Bylander, Göran Johansson, and Anton Frisk Kockum

PRX Quantum 2, 040348 (2021)

arXiv:2108.11358

​

37. Classification and reconstruction of optical quantum states with deep neural networks
Shahnawaz Ahmed, Carlos Sánchez Muñoz, Franco Nori, and Anton Frisk Kockum

Physical Review Research 3, 033278 (2021)

arXiv:2012.02185

​

36. Quantum state tomography with conditional generative adversarial networks
Shahnawaz Ahmed, Carlos Sánchez Muñoz, Franco Nori, and Anton Frisk Kockum

Physical Review Letters 127, 140502 (2021)

arXiv:2008.03240

​

35. Ultimate quantum limit for amplification: a single atom in front of a mirror
Emely Wiegand, Ping-Yi Wen, Per Delsing, Io-Chun Hoi, and Anton Frisk Kockum

New Journal of Physics 23, 043048 (2021)

arXiv:2012.09800

​

34. Characterizing decoherence rates of a superconducting qubit by direct microwave scattering
Yong Lu, Andreas Bengtsson, Jonathan J. Burnett, Emely Wiegand, Baladitya Suri, Philip Krantz, Anita Fadavi Roudsari, Anton Frisk Kockum, Simone Gasparinetti, Göran Johansson, and Per Delsing

npj Quantum Information 7, 35 (2021)

arXiv:1912.02124

​

33. Engineering the level structure of a giant artificial atom in waveguide quantum electrodynamics
A. M. Vadiraj, Andreas Ask, Thomas G. McConkey, Ibrahim Nsanzineza, C. W. Sandbo Chang, Anton Frisk Kockum, and

C. M. Wilson

Physical Review A 103, 023710 (2021)

arXiv:2003.14167

​

32. Tunable chiral bound states with giant atoms
Xin Wang, Tao Liu, Anton Frisk Kockum, Hong-Rong Li, and Franco Nori

Physical Review Letters 126, 043602 (2021)

arXiv:2008.13560

​

31. Oscillating bound states for a giant atom
Lingzhen Guo, Anton Frisk Kockum, Florian Marquardt, and Göran Johansson

Physical Review Research 2, 043014 (2020)

arXiv:1911.13028

​

30. Simulating ultrastrong-coupling processes breaking parity conservation in Jaynes-Cummings systems
Carlos Sánchez Muñoz, Anton Frisk Kockum, Adam Miranowicz, and Franco Nori

Physical Review A 102, 033716 (2020)

arXiv:1910.12875

​

29. Improved success probability with greater circuit depth for the quantum approximate optimization algorithm

Andreas Bengtsson, Pontus Vikstål, Christopher Warren, Marika Svensson, Xiu Gu, Anton Frisk Kockum, Philip Krantz, Christian Krizan, Daryoush Shiri, Ida-Maria Svensson, Giovanna Tancredi, Göran Johansson, Per Delsing, Giulia Ferrini, and Jonas Bylander

Physical Review Applied 14, 034010 (2020)

arXiv:1912.10495

​

28. Waveguide quantum electrodynamics with giant superconducting artificial atoms
Bharath Kannan, Max J. Ruckriegel, Daniel L. Campbell, Anton Frisk Kockum, Jochen Braumüller, David K. Kim, Morten Kjaergaard, Philip Krantz, Alexander Melville, Bethany M. Niedzielski, Antti Vepsäläinen, Roni Winik, Jonilyn L. Yoder, Franco Nori, Terry P. Orlando, Simon Gustavsson, and William D. Oliver

Nature 583, 775 (2020)

arXiv:1912.12233

​

27. Deep Q-learning decoder for depolarizing noise on the toric code
David Fitzek, Mattias Eliasson, Anton Frisk Kockum, and Mats Granath

Physical Review Research 2, 023230 (2020)

arXiv:1912.12919

​

26. Large collective Lamb shift of two distant superconducting artificial atoms
Ping Yi Wen*, K.-T. Lin*, Anton Frisk Kockum*, Baladitya Suri, Hou Ian, Jeng-Chung Chen, S. Y. Mao, C. C. Chiu, Per Delsing, Franco Nori, Guin-Dar Lin, and Io-Chun Hoi

Physical Review Letters 123, 233602 (2019)

arXiv:1904.12473

*Equal author contributions

​

25. Interaction of mechanical oscillators mediated by the exchange of virtual photon pairs
Omar Di Stefano, Alessio Settineri, Vincenzo Macrì, Alessandro Ridolfo, Roberto Stassi, Anton Frisk Kockum, Salvatore Savasta, and Franco Nori

Physical Review Letters 122, 030402 (2019)

arXiv:1712.00121

​

24. Ultrastrong coupling between light and matter
Anton Frisk Kockum, Adam Miranowicz, Simone De Liberato, Salvatore Savasta, and Franco Nori

Nature Reviews Physics 1, 19 (2019)

arXiv:1807.11636

​

23. Simple preparation of Bell and GHZ states using ultrastrong-coupling circuit QED
Vincenzo Macrì, Franco Nori, and Anton Frisk Kockum

Physical Review A 98, 062327 (2018)

arXiv:1810.09808

​

22. Photodetection probability in quantum systems with arbitrarily strong light-matter interaction
Omar Di Stefano, Anton Frisk Kockum, Alessandro Ridolfo, Salvatore Savasta, and Franco Nori

Scientific Reports 8, 17825 (2018)

arXiv:1711.10698

​

21. Dissipation and thermal noise in hybrid quantum systems in the ultrastrong coupling regime
Alessio Settineri, Vincenzo Macrì, Alessandro Ridolfo, Omar Di Stefano, Anton Frisk Kockum, Franco Nori, and Salvatore Savasta

Physical Review A 98, 053834 (2018)

arXiv:1807.06348

​

20. Decoherence-free interaction between giant atoms in waveguide quantum electrodynamics
Anton Frisk Kockum, Göran Johansson, and Franco Nori

Physical Review Letters 120, 140404 (2018)

arXiv:1711.08863

​

19. Nonperturbative dynamical Casimir effect in optomechanical systems: vacuum Casimir-Rabi splittings
Vincenzo Macrì, Alessandro Ridolfo, Omar Di Stefano, Anton Frisk Kockum, Franco Nori, and Salvatore Savasta

Physical Review X 8, 011031 (2018)

arXiv:1706.04134

​

18. Reflective amplification without population inversion from a strongly driven superconducting qubit
Ping Yi Wen, Anton Frisk Kockum, Hou Ian, Jeng-Chung Chen, Franco Nori, and Io-Chun Hoi

Physical Review Letters 120, 063603 (2018)

arXiv:1707.06400

​

17. Microwave photonics with superconducting quantum circuits
Xiu Gu*, Anton Frisk Kockum*, Adam Miranowicz, Yu-xi Liu, and Franco Nori

Physics Reports 718-719, 1-102 (2017)

arXiv:1707.02046

*Equal author contributions

​

16. Circuit quantum acoustodynamics with surface acoustic waves
Riccardo Manenti, Anton Frisk Kockum, Andrew Patterson, Tanja Behrle, Joseph Rahamim, Giovanna Tancredi, Franco Nori, and Peter J. Leek

Nature Communications 8, 975 (2017)

arXiv:1703.04495

​

15. Quantum nonlinear optics without photons
Roberto Stassi, Vincenzo Macrì, Anton Frisk Kockum, Omar Di Stefano, Adam Miranowicz, Salvatore Savasta, and Franco Nori

Physical Review A 96, 023818 (2017)

arXiv:1702.00660

​

14. Frequency conversion in ultrastrong cavity QED
Anton Frisk Kockum, Vincenzo Macrì, Luigi Garziano, Salvatore Savasta, and Franco Nori

Scientific Reports 7, 5313 (2017)

arXiv:1701.07973

​

13. Deterministic quantum nonlinear optics with single atoms and virtual photons
Anton Frisk Kockum, Adam Miranowicz, Vincenzo Macrì, Salvatore Savasta, and Franco Nori

Physical Review A 95, 063849 (2017)

arXiv:1701.05038

​

12. Feynman-diagrams approach to the quantum Rabi model for ultrastrong cavity QED: stimulated emission and reabsorption of virtual particles dressing a physical excitation
Omar Di Stefano, Roberto Stassi, Luigi Garziano, Anton Frisk Kockum, Salvatore Savasta, and Franco Nori

New Journal of Physics 19, 053010 (2017)

Selected as a Highlight of 2017

arXiv:1603.04984

​

11. Giant acoustic atom: A single quantum system with a deterministic time delay
Lingzhen Guo, Arne L. Grimsmo, Anton Frisk Kockum, Mikhail Pletyukhov, and Göran Johansson

Physical Review A 95, 053821 (2017)

Selected as an Editors' Suggestion

arXiv:1612.00865

​

10. Leggett–Garg inequality violations with a large ensemble of qubits
Neill Lambert, Kamanasish Debnath, Anton Frisk Kockum, George C. Knee, William J. Munro, and Franco Nori
Physical Review A 94, 012105 (2016)
arXiv:1604.04059

​

9. Multiphoton quantum Rabi oscillations in ultrastrong cavity QED
Luigi Garziano, Roberto Stassi, Vincenzo Macrì, Anton Frisk Kockum, Salvatore Savasta, and Franco Nori
Physical Review A 92, 063830 (2015)
arXiv:1509.06102

​

8. Probing the quantum vacuum with an artificial atom in front of a mirror

Io-Chun Hoi, Anton Frisk Kockum, Lars Tornberg, Arsalan Pourkabirian, Göran Johansson, Per Delsing, and C. M. Wilson
Nature Physics 11, 1045 (2015)
arXiv:1410.8840

​

7. Propagating phonons coupled to an artificial atom
Martin V. Gustafsson, Thomas Aref, Anton Frisk Kockum, Maria K. Ekström, Göran Johansson, and Per Delsing
Science 346, 207 (2014)

Selected for an accompanying Perspective
arXiv:1404.0401

​

6. Designing frequency-dependent relaxation rates and Lamb shifts for a giant artificial atom
Anton Frisk Kockum, Per Delsing, and Göran Johansson
Physical Review A 90, 013837 (2014)

arXiv:1406.0350

​

5. Quantum nondemolition detection of a propagating microwave photon
Sankar R. Sathyamoorthy, Lars Tornberg, Anton Frisk Kockum, Ben Q. Baragiola, Joshua Combes, C. M. Wilson, Thomas M. Stace, and Göran Johansson
Physical Review Letters 112, 093601 (2014)
arXiv:1308.2208

​

4. Detailed modelling of the susceptibility of a thermally populated, strongly driven circuit-QED system
Anton Frisk Kockum*, Martin Sandberg*, Michael R. Vissers, Jiansong Gao, Göran Johansson, and David P. Pappas

Journal of Physics B: Atomic, Molecular and Optical Physics 46, 224014 (2013)

Selected for an accompanying Lab Talk

*Equal author contributions

​

3. Giant cross-Kerr effect for propagating microwaves induced by an artificial atom

Io-Chun Hoi, Anton Frisk Kockum, Tauno Palomaki, Thomas M. Stace, Bixuan Fan, Lars Tornberg, Sankar R. Sathyamoorthy, Göran Johansson, Per Delsing, and C. M. Wilson

Physical Review Letters 111, 053601 (2013)
arXiv:1207.1203

​

2. Breakdown of the cross-Kerr scheme for photon counting
Bixuan Fan, Anton Frisk Kockum, Joshua Combes, Göran Johansson, Io-Chun Hoi, C. M. Wilson, Per Delsing, G. J. Milburn, and Thomas M. Stace
Physical Review Letters 110, 053601 (2013)
arXiv:1210.0991

​

1. Undoing measurement-induced dephasing in circuit QED

Anton Frisk Kockum, Lars Tornberg, and Göran Johansson

Physical Review A 85, 052318 (2012)
arXiv:1202.2386

​