The article A QUBO Formulation for Minimum Loss Spanning Tree Reconfiguration Problems in Electric Power Networks, by F. Silva, P. Carvalho, L. Ferreira, Y. Omar, is available at: arXiv:2109.09659 (2021). Get PDF
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Lorenzo Buffoni won a microgrant from Unitary Fund devoted to the development of SQWalk, a python package focused to the simulation of quantum walks. The package is built upon the popular QuTiP and Qiskit frameworks and provides students and researchers tools to simulate quantum walkers with a minimal setup effort. The project is completely open-source and available via GitHub, where one can find both the source code and some tutorial notebooks introducing its core functionalities, the package is also available via PyPi.
 New session of the QuantHEP Seminar – Quantum Computation and High-Energy Physics Seminar:
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And follow QuantHEP on Twitter! For more details, see: https://quanthep-seminar.org/ The Group won an FCT Exploratory Project to investigate Entanglement in High-Energy Physics. The project is coordinated by Gonçalo Quinta, and involves also João Seixas and Yasser Omar, congratulations to all!
This project further reinforces the Group's agenda and activities to explore the frontier between Quantum Information Science and High-Energy Physics, already ongoing in the QuantHEP – Quantum Computing Solutions for High-Energy Physics project and QuantHEP Seminar. This Exploratory Project is funded by Fundação para a Ciência e a Tecnologia (FCT), the Portuguese Science Foundation. Kornelia Ufniarz, Luís Bugalho, and Miguel Murça won PhD Scholarships from Fundação para a Ciência e a Tecnologia (FCT), the Portuguese Science Foundation, and were all ranked in the top-7 at national level in Physics. And this corresponds once again to a 100% success rate for the students supervised by Yasser Omar in our Group. Congratulations to all!
Rui André has joined the Group as a Graduate Research Assistant. Welcome Rui!
The article The Contribution of Submarine Optical Fiber Telecom Cables to the Monitoring of Earthquakes and Tsunamis in the NE Atlantic, by L. Matias, F. Carrilho, V. Sá, R. Omira, M. Niehus, C. Corela, J. Barros, Y. Omar, has been published in: Frontiers in Earth Science 9, 686296 (2021). Get PDF.
The article Quantum field thermal machines, by M. Gluza, J. Sabino, N. H. Y. Ng, G. Vitagliano, M. Pezzutto, Y. Omar, I. Mazets, M. Huber, J. Schmiedmayer, J. Eisert, has been published in: Physical Review X Quantum 2, 030310 (2021). Get PDF.
New session of the Quantum for Plasmas & Plasmas for Quantum (QPPQ) seminar:
Quantum Simulation of Nonlinear Classical and Semiclassical Dynamics Ilon Joseph (Lawrence Livermore National Laboratory) Friday 23 July 2021 at 17:00 Lisbon time in Zoom. Abstract: In principle, future error-corrected quantum computers promise to accelerate the solution of many numerical algorithms that are important for scientific computing. If the system is Hamiltonian, then one natural approach is to simulate a quantized version of the system. Another natural approach is to reformulate the conservation of probability, the Liouville equation, as an equivalent Schrodinger equation with Hermitian Hamiltonian and a unitary evolution operator. The introduction of a complex phase factor allows one to represent semiclassical dynamics through a configuration space version of the Koopman-van Hove (KvH) equation, intimately related to the phase space KvH equation introduced in Ref. [1]. This semiclassical KvH formulation also solves the important problem of self-consistently coupling classical and quantum systems together. A quantum computer with finite resources can be used to simulate a finite-dimensional approximation of the unitary evolution operator. Using this approach to quantum simulation is exponentially more efficient than a deterministic Eulerian discretization of the Liouville equation if the Hamiltonian is sparse [2]. Using amplitude estimation for the calculation of observables and quantum walk techniques for state preparation can lead to up to a quadratic improvement over probabilistic Monte Carlo algorithms [2]. Work performed by LLNL under US DOE contract DE-AC52-07NA27344 was supported by the DOE Fusion Energy Sciences project “Quantum Leap for FES,” SCW-1680 and by LLNL Laboratory Directed Research and Development project 19-FS-072. [1] D. I. Bondar, F. Gay-Balmaz, C. Tronci, Proc. R. Soc. London Ser. A 475, 20180879 (2019). [2] I. Joseph, Phys. Rev. Research 2, 043102 (2020).
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