Preprints

  1. M. Naghiloo, K. Peng, Y. Ye, G. Cunningham, K. P. O'Brien. "Broadband Microwave Isolation with Adiabatic Mode Conversion in Coupled Superconducting Transmission Lines" arXiv:2103.07793 (2021)

Publications

  1. J. Y. Qiu, A. Grimsmo, K. Peng, B. Kannan, B. Lienhard, Y. Sung, P. Krantz, V. Bolkhovsky, G. Calusine, D. Kim, A. Melville, B. M. Niedzielski, J. Yoder, M. E. Schwartz, T. P. Orlando, I. Siddiqi, S. Gustavsson, K. P. O’Brien, W. D. Oliver. "Broadband squeezed microwaves and amplification with a Josephson traveling-wave parametric amplifier" Nature Physics (2023) | arXiv:2201.11261, 1-29 (2022). See also: Press Release from MIT News Office
  2. K. Peng, M. Naghiloo, J. Wang, G. D. Cunningham, Y. Ye, and K. P. O’Brien. "Floquet-Mode Traveling-Wave Parametric Amplifiers" PRX Quantum 3, 020306 (2022)
  3. K. Peng, R. Poore, P. Krantz, D. E. Root, K. P. O'Brien. "X-parameter based design and simulation of Josephson traveling-wave parametric amplifiers for quantum computing applications" IEEE International Conference on Quantum Computing and Engineering (2022) 331-340
  4. J. Ville, A. Morvan, A. Hashim, R. K. Naik, M. Lu, B. Mitchell, J. Kreikebaum, K. P. O'Brien, J. J. Wallman, I. Hincks, J. Emerson, E. Smith, E. Younis, C. Iancu, D. I. Santiago, and I. Siddiqi. "Leveraging randomized compiling for the quantum imaginary-time-evolution algorithm" Physical Review Research 4 033140 (2021).
  5. A. Hashim, R. K. Naik, A. Morvan, J.-L. Ville, B. Mitchell, J. M. Kreikebaum, M. Davis, E. Smith, C. Iancu, K. P. O’Brien, I. Hincks, J. J. Wallman, J. Emerson, and I. Siddiqi. "Randomized Compiling for Scalable Quantum Computing on a Noisy Superconducting Quantum Processor" Phys. Rev. X 11, 041039, 1-12 (2021).
  6. Y. Ye, K. Peng, M. Naghiloo, G. Cunningham, K. P. O'Brien. "Engineering Purely Nonlinear Coupling Using a Quarton" Phys. Rev. Lett. 127, 050502 (2021)
  7. A. Morvan, V. V. Ramasesh, M. S. Blok, J.M. Kreikebaum, K. O'Brien, L. Chen, B. K. Mitchell, R. K. Naik, D. I. Santiago, I. Siddiqi. "Qutrit Randomized Benchmarking" Phys. Rev. Lett. 126, 210504 (2021)
  8. A. Grimsmo, B. Royer, J. M. Kreikebaum, Y. Ye, K. O'Brien, I. Siddiqi, A. Blais. "Quantum Metamaterial for Broadband Detection of Single Microwave Photons" Phys. Rev. Applied 15, 034074 (2021)
  9. M. S. Blok, V. V. Ramasesh, T. Schuster, K. O'Brien, J.M. Kreikebaum, D. Dahlen, A. Morvan, B. Yoshida, N. Y. Yao, I. Siddiqi. "Quantum Information Scrambling on a Superconducting Qutrit Processor" Phys. Rev. X 11, 021010 (2021)
  10. J. M. Kreikebaum, K. P. O'Brien, A. Morvan, I. Siddiqi. "Improving wafer-scale Josephson junction resistance variation in superconducting quantum coherent circuits." Supercond. Sci. Technol. 33 06LT02 (2020) doi:10.1088/1361-6668/ab8617
  11. B. Lienhard, J. Braumüller, W. Woods, D. Rosenberg, G. Calusine, S. Weber, A. Vepsäläinen, K. O'Brien, T. P. Orlando, S. Gustavsson, W. D. Oliver. "Microwave Packaging for Superconducting Qubits." Proceedings of the 2019 IEEE/MTT-S International Microwave Symposium (2019) arXiv:1906.05425
  12. L.M. Procopio, L. A. Rozema, Z. J. Wong, D. R. Hamel, K. O'Brien, X. Zhang, B. Dakić, and P. Walther. "Single-photon test of hyper-complex quantum theories using a metamaterial." Nat. Comm. 8, 15044 (2017) doi:10.1038/ncomms15044
  13. Z. J. Wong*, Y. Xu*, J. Kim*, K. O'Brien, Y. Wang, L. Feng, and X. Zhang. "Lasing and anti-lasing in a single cavity." Nat. Phot. 10, 796-801 (2016). doi:10.1038/nphoton.2016.216
  14. S. S. Kruk, Z. J. Wong, E. Pshenay-Severin, K. O'Brien, D. Neshev, and Y. S. Kivshar, and X. Zhang. "Magnetic hyperbolic optical metamaterials." Nat. Comm. 7 11329 (2016) doi:10.1038/ncomms11329
  15. K. O'Brien, C. Macklin, D. Hover, M. E. Schwartz, V. Bolkhovsky, X. Zhang, W. D. Oliver, I. Siddiqi. "Towards quantum-noise limited multiplexed microwave readout of qubits" Proceedings of the 2016 IEEE/MTT-S International Microwave Symposium (2016)doi:10.1109/MWSYM.2016.7540350
  16. F. J. Diaz, T. Hatakeyama, J. Rho, Y. Wang, K. O'Brien, X. Zhang, C. M. de Sterke, B. T. Kuhlmey, and S. Palomba. "Sensitive method for measuring third order nonlinearities in compact dielectric and hybrid plasmonic waveguides." Opt. Express 24, 545-554 (2016). doi:10.1364/OE.24.000545
  17. C. Macklin, K. O'Brien, D. Hover, M. E. Schwartz, V. Bolkhovsky, X. Zhang, W. D. Oliver, I. Siddiqi. "A near-quantum-limited Josephson traveling-wave parametric amplifier." Science 350, 307-310 (2015). doi:10.1126/science.aaa8525
  18. M. Mrejen*, H. Suchowski*, T. Hatakeyama*, C. Wu, L. Feng, K. O'Brien, Y. Wang, X. Zhang. "Adiabatic elimination-based coupling control in densely packed subwavelength waveguides." Nat. Comm. 6, 7565 (2015). doi:10.1038/ncomms8565
  19. K. O'Brien*, H. Suchowski*, J. Rho, A. Salandrino, B. Kanté, X. Yin, X. Zhang. "Predicting nonlinear properties of metamaterials from the linear response." Nat. Mat. 14, 379-383 (2015). doi:10.1038/nmat4214
  20. S. N. David, Y. Zhai, A. M. van der Zande, K. O'Brien, P. Y. Huang, D. A. Chenet, J. C. Hone, X. Zhang, and X. Yin. "Rapid, all-optical crystal orientation imaging of two-dimensional transition metal dichalcogenide monolayers." Appl. Phys. Lett. 107, 111902 (2015). doi:10.1063/1.4930232
  21. K. O'Brien, C. Macklin, I. Siddiqi, X. Zhang. "Resonant Phase Matching of Josephson Junction Traveling Wave Parametric Amplifiers." Phys. Rev. Lett. 113, 157001 (2014). doi:10.1103/PhysRevLett.113.157001
  22. Z. Ye*, T. Cao*, K. O'Brien, H. Zhu, X. Yin, Y. Wang, S. G. Louie, X. Zhang. "Probing excitonic dark states in single-layer tungsten disulphide." Nature 513, 214-218 (2014). doi:10.1038/nature13734
  23. K. O'Brien*, N. D. Lanzillotti-Kimura*, J. Rho, H. Suchowski, X. Yin, X. Zhang. "Ultrafast acousto-plasmonic control and sensing in complex nanostructures." Nat. Comm. 5, 4042 (2014). doi:10.1038/ncomms5042
  24. X. Yin*, Z. Ye*, D. A. Chenet*, Y. Ye*, K. O'Brien, J. C. Hone, X. Zhang. "Edge Nonlinear Optics on a MoS2 Atomic Monolayer." Science 344, 488-490 (2014). doi:10.1126/science.1250564
  25. H. Suchowski*, K. O'Brien*, Z. J. Wong*, A. Salandrino, X. Yin, X. Zhang. "Phase Mismatch-Free Nonlinear Propagation in Optical Zero-Index Materials." Science 342, 1223-1226 (2013). doi:10.1126/science.1244303
  26. B. Kanté, Y. Park, K. O'Brien, D. Shuldman, N. D. Lanzillotti-Kimura, Z. J. Wong, X. Yin, X. Zhang. "Symmetry breaking and optical negative index of closed nanorings." Nat. Comm. 3, 1180 (2012). doi:10.1038/ncomms2161
  27. K. O'Brien, N. D. Lanzillotti-Kimura, H. Suchowski, B. Kanté, Y. Park, X. Yin, X. Zhang. "Reflective interferometry for optical metamaterial phase measurements." Opt. Lett. 37, 4089-4091 (2012). doi:10.1364/OL.37.004089
  28. B. Kanté, K. O'Brien, A. Niv, X. Yin, X. Zhang. "Proposed isotropic negative index in three-dimensional optical metamaterials." Phys. Rev. B 85, 041103 (2012). doi:10.1103/PhysRevB.85.041103

Theses

  1. Y. Ye. "Nonlinearity engineering with the Quarton." S.M. thesis. Massachusetts Institute of Technology (2020) Link
  2. K. Peng. "Quantum efficiency of Josephson traveling wave parametric amplifiers with many-Mode processes." S.M. thesis. Massachusetts Institute of Technology (2020) Link
  3. K. O'Brien. "Nonlinear Light-Matter Interactions in Metamaterials." University of California, Berkeley (2016) Link