Zobrazeno 1 - 10
of 495
pro vyhledávání: '"Johansson Göran"'
Autor:
Yang, Jiaying, Khanahmadi, Maryam, Strandberg, Ingrid, Gaikwad, Akshay, Castillo-Moreno, Claudia, Kockum, Anton Frisk, Ullah, Muhammad Asad, Johansson, Göran, Eriksson, Axel Martin, Gasparinetti, Simone
A distributed quantum computing network requires a quantum communication channel between spatially separated processing units. In superconducting circuits, such a channel can be implemented based on propagating microwave photons to encode and transfe
Externí odkaz:
http://arxiv.org/abs/2410.23202
Autor:
Kockum, Anton Frisk, Soro, Ariadna, García-Álvarez, Laura, Vikstål, Pontus, Douce, Tom, Johansson, Göran, Ferrini, Giulia
These are the lecture notes of the master's course "Quantum Computing", taught at Chalmers University of Technology every fall since 2020, with participation of students from RWTH Aachen and Delft University of Technology. The aim of this course is t
Externí odkaz:
http://arxiv.org/abs/2311.08445
Publikováno v:
Phys. Rev. Research 6, 033112 (2024)
Protein folding processes are a vital aspect of molecular biology that is hard to simulate with conventional computers. Quantum algorithms have been proven superior for certain problems and may help tackle this complex life science challenge. We anal
Externí odkaz:
http://arxiv.org/abs/2311.04186
Quantum state transfer by propagating wave packets of electromagnetic radiation requires tunable couplings between the sending and receiving quantum systems and the propagation channel or waveguide. The highest fidelity of state transfer in experimen
Externí odkaz:
http://arxiv.org/abs/2306.12127
The fidelity of quantum operations is often limited by incoherent errors, which typically can be modeled by fundamental Markovian noise processes such as amplitude damping and dephasing. In Phys. Rev. Lett. 129, 150504 (2022; https://doi.org/10.1103/
Externí odkaz:
http://arxiv.org/abs/2302.13885
Autor:
Sreedhar, Rishi, Vikstål, Pontus, Svensson, Marika, Ask, Andreas, Johansson, Göran, García-Álvarez, Laura
Variational quantum algorithms constitute one of the most widespread methods for using current noisy quantum computers. However, it is unknown if these heuristic algorithms provide any quantum-computational speedup, although we cannot simulate them c
Externí odkaz:
http://arxiv.org/abs/2207.03404
Autor:
Warren, Christopher W., Fernández-Pendás, Jorge, Ahmed, Shahnawaz, Abad, Tahereh, Bengtsson, Andreas, Biznárová, Janka, Debnath, Kamanasish, Gu, Xiu, Križan, Christian, Osman, Amr, Roudsari, Anita Fadavi, Delsing, Per, Johansson, Göran, Kockum, Anton Frisk, Tancredi, Giovanna, Bylander, Jonas
Publikováno v:
npj Quantum Inf 9, 44 (2023)
While all quantum algorithms can be expressed in terms of single-qubit and two-qubit gates, more expressive gate sets can help reduce the algorithmic depth. This is important in the presence of gate errors, especially those due to decoherence. Using
Externí odkaz:
http://arxiv.org/abs/2207.02938
Autor:
Kosen, Sandoko, Li, Hang-Xi, Rommel, Marcus, Shiri, Daryoush, Warren, Christopher, Grönberg, Leif, Salonen, Jaakko, Abad, Tahereh, Biznárová, Janka, Caputo, Marco, Chen, Liangyu, Grigoras, Kestutis, Johansson, Göran, Kockum, Anton Frisk, Križan, Christian, Lozano, Daniel Pérez, Norris, Graham, Osman, Amr, Fernández-Pendás, Jorge, Ronzani, Alberto, Roudsari, Anita Fadavi, Simbierowicz, Slawomir, Tancredi, Giovanna, Wallraff, Andreas, Eichler, Christopher, Govenius, Joonas, Bylander, Jonas
Publikováno v:
Quantum Science and Technology, 7(3), 035018 (2022)
We have integrated single and coupled superconducting transmon qubits into flip-chip modules. Each module consists of two chips -- one quantum chip and one control chip -- that are bump-bonded together. We demonstrate time-averaged coherence times ex
Externí odkaz:
http://arxiv.org/abs/2112.02717
Publikováno v:
Phys. Rev. Lett. 129, 150504 (2022)
Quantum information processing is in real systems often limited by dissipation, stemming from remaining uncontrolled interaction with microscopic degrees of freedom. Given recent experimental progress, we consider weak dissipation, resulting in a sma
Externí odkaz:
http://arxiv.org/abs/2110.15883
Autor:
Karmstrand, Therese, Rousseaux, Benjamin, Kockum, Anton Frisk, Shegai, Timur, Johansson, Göran
Publikováno v:
Physical Review A 108, 053706 (2023)
Recent technological advancements have enabled strong light-matter interaction in highly dissipative cavity-emitter systems. However, in these systems, which are well described by the Tavis-Cummings model, the considerable loss rates render the reali
Externí odkaz:
http://arxiv.org/abs/2110.00595