QC2 · Publications

MPStab: an hybrid stabilizers tensor-network quantum circuit simulator

Giulio Crognaletti, Mattia Robbiano, Michele Grossi, Matteo Robbiati

Electrical post-fabrication tuning of aluminum Josephson junctions at room temperature

Christian Križan, Maurizio Toselli, Irshad Ahmad, Hadi Khaksaran, Marcus Rommel, Nermin Trnjanin, Janka Biznárová, Mamta Dahiya, Emil Hogedal, Halldór Jakobsson, Andreas Nylander, Jonas Bylander, Per Delsing, Giovanna Tancredi

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Published Version

DOI: https://doi.org/10.1088/2633-4356/ae7fe1

Demonstrating and Benchmarking Classical Shadows for Lindblad Tomography

Rune Thinggaard Birke, Johann Bock Severin, Malthe A. Marciniak, Emil Hogedal, Andreas Nylander, Irshad Ahmad, Amr Osman, Janka Biznárová, Marcus Rommel, Anita Fadavi Roudsari, Jonas Bylander, Giovanna Tancredi, Daniel Stilck França, Albert Werner, Christopher W. Warren, Jacob Hastrup, Svend Krøjer, Morten Kjaergaard

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Real-time adaptive tracking of fluctuating relaxation rates in superconducting qubits

Fabrizio Berritta, Jacob Benestad, Jan A. Krzywda, Oswin Krause, Malthe A. Marciniak, Svend Krøjer, Christopher W. Warren, Emil Hogedal, Andreas Nylander, Irshad Ahmad, Amr Osman, Janka Biznárová, Marcus Rommel, Anita Fadavi Roudsari, Jonas Bylander, Giovanna Tancredi, Jeroen Danon, Jacob Hastrup, Ferdinand Kuemmeth, Morten Kjaergaard

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Published Version

DOI: https://doi.org/10.1103/gk1b-stl3

Quantum Process Tomography with Digital Twins of Error Matrices

Tangyou Huang, Akshay Gaikwad, Ilya Moskalenko, Anuj Aggarwal, Tahereh Abad, Marko Kuzmanovic, Yu-Han Chang, Ognjen Stanisavljevic, Emil Hogedal, Christopher Warren, Irshad Ahmad, Janka Biznárová, Amr Osman, Mamta Dahiya, Marcus Rommel, Anita Fadavi Rousari, Andreas Nylander, Liangyu Chen, Jonas Bylander, Gheorghe Sorin Paraoanu, Anton Frisk Kockum, Giovanna Tancredi

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Published Version

DOI: https://doi.org/10.1103/dpgy-rtxr

Neural-network-based design and implementation of fast and robust quantum gates

Marko Kuzmanović, Ilya Moskalenko, Yu-Han Chang, Ognjen Stanisavljević, Christopher Warren, Emil Hogedal, Anuj Aggarwal, Irshad Ahmad, Janka Biznárová, Mamta Dahiya, Marcus Rommel, Andreas Nylander, Giovanna Tancredi, Gheorghe Sorin Paraoanu

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Mitigating transients in flux-control signals in a superconducting quantum processor

Anuj Aggarwal, Jorge Fernández-Pendás, Tahereh Abad, Daryoush Shiri, Halldór Jakobsson, Marcus Rommel, Andreas Nylander, Emil Hogedal, Amr Osman, Janka Biznárová, Robert Rehammar, Michele Faucci Giannelli, Anita Fadavi Roudsari, Jonas Bylander, Giovanna Tancredi

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Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture

Christian Križan, Janka Biznárová, Liangyu Chen, Emil Hogedal, Amr Osman, Christopher W. Warren, Sandoko Kosen, Hang-Xi Li, Tahereh Abad, Anuj Aggarwal, Marco Caputo, Jorge Fernández-Pendás, Akshay Gaikwad, Leif Grönberg, Andreas Nylander, Robert Rehammar, Marcus Rommel, Olga I. Yuzephovich, Anton Frisk Kockum, Joonas Govenius, Giovanna Tancredi, Jonas Bylander

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Published Version

DOI: https://doi.org/10.1088/1367-2630/adeba7

Fast unconditional reset and leakage reduction in fixed-frequency transmon qubits

Liangyu Chen, Simon Pettersson Fors, Zixian Yan, Anaida Ali, Tahereh Abad, Amr Osman, Eleftherios Moschandreou, Benjamin Lienhard, Sandoko Kosen, Hang-Xi Li, Daryoush Shiri, Tong Liu, Stefan Hill, Abdullah-Al Amin, Robert Rehammar, Mamta Dahiya, Andreas Nylander, Marcus Rommel, Anita Fadavi Roudsari, Marco Caputo, Grönberg Leif, Joonas Govenius, Miroslav Dobsicek, Michele Faucci Giannelli, Anton Frisk Kockum, Jonas Bylander, Giovanna Tancredi

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Published Version

DOI: https://doi.org/10.1038/s41534-026-01356-2

Characterization of process-related interfacial dielectric loss in aluminum-on-silicon by resonator microwave measurements, materials analysis, and imaging

Lert Chayanun, Janka Biznárová, Lunjie Zeng, Per Malmberg, Andreas Nylander, Amr Osman, Marcus Rommel, Pui Lam Tam, Eva Olsson, August Yurgens, Jonas Bylander, Anita Fadavi Roudsari

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Published Version

DOI: https://doi.org/10.1063/5.0208140

Quantum synchronization in one-dimensional topological systems

Tong Liu, Laura García-Álvarez, Giovanna Tancredi

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Published Version

DOI: https://doi.org/10.1103/mr1f-v8cv

A small footprint travelling-wave parametric amplifier with a high Signal-to-Noise Ratio improvement in a wide band

Hampus Renberg Nilsson, Liangyu Chen, Giovanna Tancredi, Robert Rehammar, Daryoush Shiri, Filip Nilsson, Amr Osman, Vitaly Shumeiko, Per Delsing

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Dispersive Qubit Readout with Intrinsic Resonator Reset

M. Jerger, F. Motzoi, Y. Gao, C. Dickel, L. Buchmann, A. Bengtsson, G. Tancredi, C.W. Warren, J. Bylander, D. DiVincenzo, R. Barends, P. A. Bushev

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Signal crosstalk in a flip-chip quantum processor

Sandoko Kosen, Hang-Xi Li, Marcus Rommel, Robert Rehammar, Marco Caputo, Leif Grönberg, Jorge Fernández-Pendás, Anton Frisk Kockum, Janka Biznárová, Liangyu Chen, Christian Križan, Andreas Nylander, Amr Osman, Anita Fadavi Roudsari, Daryoush Shiri, Giovanna Tancredi, Joonas Govenius, Jonas Bylander

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Published Version

DOI: https://doi.org/10.1103/PRXQuantum.5.030350

Experimentally verified, fast analytic and numerical design of superconducting resonators in flip-chip architectures

Hang-Xi Li, Daryoush Shiri, Sandoko Kosen, Marcus Rommel, Lert Chayanun, Andreas Nylander, Robert Rehammar, Giovanna Tancredi, Marco Caputo, Kestutis Grigoras, Leif Grönberg, Joonas Govenius, Jonas Bylander

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Published Version

DOI: https://doi.org/10.1109/tqe.2023.3302371

Mitigation of interfacial dielectric loss in aluminum-on-silicon superconducting qubits

Janka Biznárová, Amr Osman, Emil Rehnman, Lert Chayanun, Christian Križan, Per Malmberg, Marcus Rommel, Christopher Warren, Per Delsing, August Yurgens, Jonas Bylander, Anita Fadavi Roudsari

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Published Version

DOI: https://doi.org/10.1038/s41534-024-00868-z

Mitigation of frequency collisions in superconducting quantum processors

Amr Osman, Jorge Fernàndez-Pendàs, Christopher Warren, Sandoko Kosen, Marco Scigliuzzo, Anton Frisk Kockum, Giovanna Tancredi, Anita Fadavi Roudsari, Jonas Bylander

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Published Version

DOI: https://doi.org/10.1103/PhysRevResearch.5.043001

Three-wave mixing traveling-wave parametric amplifier with periodic variation of the circuit parameters

Hampus Renberg Nilsson, Liangyu Chen, Giovanna Tancredi, Robert Rehammar, Daryoush Shiri, Filip Nilsson, Amr Osman, Vitaly Shumeiko, Per Delsing

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Published Version

DOI: https://doi.org/10.1063/5.0127690

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. Križan, 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, Giovanna Tancredi

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Published Version

DOI: https://doi.org/10.1038/s41534-023-00689-6

Extensive characterization 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 Križan, Amr Osman, Anita Fadavi Roudsari, Per Delsing, Göran Johansson, Anton Frisk Kockum, Giovanna Tancredi, Jonas Bylander

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Published Version

DOI: https://doi.org/10.1038/s41534-023-00711-x

Measurement and control of a superconducting quantum processor with a fully-integrated radio-frequency system on a chip

Mats O. Tholén, Riccardo Borgani, Giuseppe Ruggero Di Carlo, Andreas Bengtsson, Christian Križan, Marina Kudra, Giovanna Tancredi, Jonas Bylander, Per Delsing, Simone Gasparinetti, David B. Haviland

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Published Version

DOI: https://doi.org/10.1063/5.0101398

QC2 Lab archive

MPStab: an hybrid stabilizers tensor-network quantum circuit simulator

Electrical post-fabrication tuning of aluminum Josephson junctions at room temperature

Demonstrating and Benchmarking Classical Shadows for Lindblad Tomography

Real-time adaptive tracking of fluctuating relaxation rates in superconducting qubits

Quantum Process Tomography with Digital Twins of Error Matrices

Neural-network-based design and implementation of fast and robust quantum gates

Mitigating transients in flux-control signals in a superconducting quantum processor

Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture

Fast unconditional reset and leakage reduction in fixed-frequency transmon qubits

Characterization of process-related interfacial dielectric loss in aluminum-on-silicon by resonator microwave measurements, materials analysis, and imaging

Quantum synchronization in one-dimensional topological systems

A small footprint travelling-wave parametric amplifier with a high Signal-to-Noise Ratio improvement in a wide band

Dispersive Qubit Readout with Intrinsic Resonator Reset

Signal crosstalk in a flip-chip quantum processor

Experimentally verified, fast analytic and numerical design of superconducting resonators in flip-chip architectures

Mitigation of interfacial dielectric loss in aluminum-on-silicon superconducting qubits

Mitigation of frequency collisions in superconducting quantum processors

Three-wave mixing traveling-wave parametric amplifier with periodic variation of the circuit parameters

Transmon qubit readout fidelity at the threshold for quantum error correction without a quantum-limited amplifier

Extensive characterization of a family of efficient three-qubit gates at the coherence limit

Measurement and control of a superconducting quantum processor with a fully-integrated radio-frequency system on a chip