Zobrazeno 1 - 10
of 8 258
pro vyhledávání: '"Kockum IS"'
A major challenge for scaling up superconducting quantum computers is unwanted couplings between qubits, which lead to always-on ZZ couplings that impact gate fidelities by shifting energy levels conditional on qubit states. To tackle this challenge,
Externí odkaz:
http://arxiv.org/abs/2408.15402
Autor:
Du, Lei, Kockum, Anton Frisk
Lattice models featuring the non-Hermitian skin effect have attracted rapidly growing interest due to the nontrivial topology associated with their complex energy spectra. Such non-Hermitian lattices are promising paradigms for engineering exotic lig
Externí odkaz:
http://arxiv.org/abs/2408.09826
Autor:
Yang, Jiaying, Strandberg, Ingrid, Vivas-Viana, Alejandro, Gaikwad, Akshay, Castillo-Moreno, Claudia, Kockum, Anton Frisk, Ullah, Muhammad Asad, Munoz, Carlos Sanchez, Eriksson, Axel Martin, Gasparinetti, Simone
The ability to generate entangled states of light is a key primitive for quantum communication and distributed quantum computation. Continuously driven sources, including those based on spontaneous parametric downconversion, are usually probabilistic
Externí odkaz:
http://arxiv.org/abs/2407.07991
Autor:
Hoshi, Daisuke, Nagase, Toshiaki, Kwon, Sangil, Iyama, Daisuke, Kamiya, Takahiko, Fujii, Shiori, Mukai, Hiroto, Ahmed, Shahnawaz, Kockum, Anton Frisk, Watabe, Shohei, Yoshihara, Fumiki, Tsai, Jaw-Shen
In quantum information processing, two primary research directions have emerged: one based on discrete variables (DV) and the other on the structure of quantum states in a continuous-variable (CV) space. It is increasingly recognized that integrating
Externí odkaz:
http://arxiv.org/abs/2406.17999
Autor:
Chen, Guangze, Kockum, Anton Frisk
Open quantum many-body systems are of both fundamental and applicational interest. However, it remains an open challenge to simulate and solve such systems, both with state-of-the-art classical methods and with quantum-simulation protocols. To overco
Externí odkaz:
http://arxiv.org/abs/2406.13678
We propose a setup which combines giant emitters (coupling to light at multiple points separated by wavelength distances) with nonlinear quantum optics and its correlated photons. In this setup, we reveal a mechanism for multiphoton chiral emission:
Externí odkaz:
http://arxiv.org/abs/2404.09829
Autor:
Kosen, Sandoko, Li, Hang-Xi, Rommel, Marcus, Rehammar, Robert, Caputo, Marco, Grönberg, Leif, Fernández-Pendás, Jorge, Kockum, Anton Frisk, Biznárová, Janka, Chen, Liangyu, Križan, Christian, Nylander, Andreas, Osman, Amr, Roudsari, Anita Fadavi, Shiri, Daryoush, Tancredi, Giovanna, Govenius, Joonas, Bylander, Jonas
Quantum processors require a signal-delivery architecture with high addressability (low crosstalk) to ensure high performance already at the scale of dozens of qubits. Signal crosstalk causes inadvertent driving of quantum gates, which will adversely
Externí odkaz:
http://arxiv.org/abs/2403.00285
Giant atoms are quantum emitters that can couple to light at multiple discrete points. Such atoms have been shown to interact without decohering via a one-dimensional waveguide. Here, we study how giant atoms behave when coupled to a two-dimensional
Externí odkaz:
http://arxiv.org/abs/2402.10879
Publikováno v:
Physics Reports 1078, 1-59 (2024)
The interaction of light and matter at the single-photon level is of central importance in various fields of physics, including, e.g., condensed matter physics, astronomy, quantum optics, and quantum information. Amplification of such quantum light-m
Externí odkaz:
http://arxiv.org/abs/2401.04949
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