Zobrazeno 1 - 10
of 190
pro vyhledávání: '"Sousa, Rogerio"'
The quasiparticle density observed in low-temperature superconducting circuits is several orders of magnitude larger than the value expected at thermal equilibrium. The tunneling of this excess of quasiparticles across Josephson junctions is recogniz
Externí odkaz:
http://arxiv.org/abs/2407.21177
Autor:
Timsina, Sanker, Hammadia, Taha, Milani, Sahar Gholami, Júnior, Filomeno S. de Aguiar, Brolo, Alexandre, de Sousa, Rogério
Publikováno v:
Phys. Rev. Research 6, 033067 (2024)
Raman scattering of photons into phonons gives rise to entangled photon pairs when the phonon emitted in a Stokes process is coherently absorbed in antiStokes scattering, forming the photonic analog of Cooper pairs. We present a nonperturbative theor
Externí odkaz:
http://arxiv.org/abs/2310.07139
Autor:
Wright, Emily, de Sousa, Rogério
Publikováno v:
2023 IEEE International Conference on Quantum Computing and Engineering (QCE), Bellevue, WA, USA, 2023, pp. 1295 (2023)
The design of high-fidelity quantum gates is difficult because it requires the optimization of two competing effects, namely maximizing gate speed and minimizing leakage out of the qubit subspace. We propose a deep reinforcement learning algorithm th
Externí odkaz:
http://arxiv.org/abs/2305.01169
Publikováno v:
Appl. Phys. Lett. 122, 224003 (2023)
Superconducting quantum interference devices (SQUIDs) and related circuits made of aluminum are known to display $1/\omega$ flux noise, where $\omega$ is frequency. A recent experiment showed that the application of an external magnetic field in the
Externí odkaz:
http://arxiv.org/abs/2302.12316
Publikováno v:
Phys. Rev. B 106, 144506 (2022)
Impurity spins randomly distributed at the surfaces and interfaces of superconducting wires are known to cause flux noise in Superconducting Quantum Interference Devices, providing a mechanism for decoherence in superconducting qubits. While flux noi
Externí odkaz:
http://arxiv.org/abs/2207.10033
Publikováno v:
Phys. Rev. B 104, 134415 (2021) (Editors' suggestion)
Magnetic structures are known to possess magnon excitations confined to their surfaces and interfaces, but these spatially localized modes are often not resolved in spectroscopy experiments. We develop a theory to calculate the confined magnon spectr
Externí odkaz:
http://arxiv.org/abs/2106.15771
Autor:
Garcia, Guilherme E.S., Potthast, Antje, Sumerskii, Ivan, Antonino, Leonardo D., de Oliveira, Matheus M., de Sousa, Rogerio R., Jr., Rosenau, Thomas, dos Santos, Demetrio J.
Publikováno v:
In Sustainable Chemistry for the Environment March 2024 5
Autor:
Zaborniak, Tristan, de Sousa, Rogério
Publikováno v:
IEEE Transactions on Quantum Engineering 2, 3100206 (2021)
Various sources of noise limit the performance of quantum computers by altering qubit states in an uncontrolled manner throughout computations and reducing their coherence time. In quantum annealers, this noise introduces additional fluctuations to t
Externí odkaz:
http://arxiv.org/abs/2006.16421