Conveners
Session 3.4
- Chair: Luca Tagliacozzo (Institute of Fundamental Physics)
Session 3.4
- Chair: Andres Gomez Tato
Session 3.4
- Chair: Elías Combarro (University of Oviedo)
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Georgy Kornakov (Warsaw University of Technology (PL))29/05/2023, 16:20Poster
In this contribution I will present ideas and ongoing project to enhance the capabilities of particle detectors using quantum systems [1]. The presented technologies could not only improve the accuracy of measurements but also provide a new dimension by directly sensing properties as spin of individual particles. The level of maturity and applicability of ideas range from those already proved...
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Dr Yue Ban (TECNALIA)29/05/2023, 16:40Talk
As important branches in quantum technologies, quantum sensing and quantum metrology have experienced significant progress, placing themselves at the forefront of the new generation of technologies harnessing quantum effects. In this presentation, different quantum magnetometers assisted by neural networks are introduced. Our results show that neural networks are valuable in distinct quantum...
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Carlos Munuera Javaloy (Universidad del País Vasco / EHU Quantum Center)29/05/2023, 17:00quantum metrology and sensingTalk
We present a method to identify energy shifts which contain structural information in solid-state systems using Nitrogen-Vacancy (NV) centers combined with synchronization techniques. To achieve this, we have developed a theory for Lee-Goldburg based decoupling schemes in microscale-NMR scenarios with NV centers at large static magnetic fields. The introduced RF fields serve two purposes: (i)...
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Jose Carlos Abadillo-Uriel (CEA Grenoble)30/05/2023, 16:20Talk
In recent years, there has been a growing interest in utilizing hole spins in silicon and germanium for quantum information processing. One reason for this is the strong spin-orbit interaction present in the valence band of these materials, which allows for versatile interactions with electric fields. As a result, there have been demonstrations of fast electrical manipulation of hole spin...
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Pablo Díez Valle (Instituto de Física Fundamental (IFF-CSIC))30/05/2023, 16:40Talk
Combinatorial optimization problems (CO) have a strong impact on a wide range of disciplines such as finance, machine learning, logistics, etc. In addition to finding a solution with minimum cost, problems of high relevance involve a number of constraints that the solution must satisfy. Variational quantum algorithms (VQA) have emerged as promising candidates for solving these problems in the...
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Axel Pérez-Obiol30/05/2023, 17:00Talk
We present a variational algorithm to solve ground states of atomic nuclei within the nuclear shell model. The strategy is based on the implementation of ADAPT-VQE, an adaptive version of the variational quantum eigensolver algorithm, on a digital quantum computer. Exact ground energies are found up to medium-mass nuclei by implementing and simulating ADAPT-VQE on quantum circuits using the...
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Dr Aman Ullah (Instituto de Ciencia Molecular, Universitat de Valencia, Paterna 46980, Spain)30/05/2023, 17:20Talk
Enhanced coherence in HoW$_{10}$ molecular spin qubits has been demonstrated by use of clock-transitions (CTs) . More recently it was shown by some of us that, while operating at the CTs, it was possible to use an electrical field to selectively address HoW$_{10}$ molecules pointing in a given direction, within a crystal that contains two kinds of identical but inversion-related molecules [2]....
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Dr Roberto Di Candia (Aalto University)30/05/2023, 17:40Talk
Quantum illumination is one of the main paradigms for implementing quantum radar in the low-frequency spectrum. Here, we contribute towards an open-air application of the protocol, by notably easing its experimental requirements. We first define an experimentally feasible receiver for an entangled signal-idler transmitter. This consists in measuring heterodyne the received signal and...
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Iagoba Apellaniz30/05/2023, 18:00Talk
We calculate precision bounds for estimating the gradient of the magnetic field based on the quantum Fisher information for various types of ensembles, such as for example, a single atomic ensemble with an arbitrary density profile, where the atoms cannot be addressed individually and which is a very relevant case for experiments.
We present a method to find spin states for gradient...
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Daniel Faílde (Centro de Supercomputación de Galicia)31/05/2023, 16:20Talk
Variational quantum algorithms (VQAs) are one of the most promising NISQ-era algorithms due to their feasibility for their application in vastly diverse fields. Machine learning, quantum chemistry, mathematics, finance or combinatorial problems can be tackled through VQAs. However, the underlying optimization processes within these algorithms usually deal with local minima and barren plateau...
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Alvaro Alhambra (IFT - CSIC)31/05/2023, 16:40Talk
Recent progress in the development of quantum technologies has enabled the direct investigation of dynamics of increasingly complex quantum many-body systems. This motivates the study of the complexity of classical algorithms for this problem in order to benchmark quantum simulators and to delineate the regime of quantum advantage. Here we present classical algorithms for approximating the...
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Wenyang Qian (University of Santiago de Compostela)31/05/2023, 17:00Talk
In recent years, a lot of effort has been put into expanding established jet-quenching formalisms to account for higher-order or energy-suppressed medium-induced effects. Understanding how such contributions emerge is important to have a more complete picture of jet evolution in the medium and to extract more detailed properties of the underlying matter. However, such efforts are in general...
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Jesús Cobos Jiménez (Investigador predoctoral)31/05/2023, 17:20Talk
We propose a new variational ansatz for the ground state preparation of the two-dimensional $\mathbb{Z}_2$ lattice gauge theory in digital quantum computers. It is similar to the well known QAOA, but it contains half Trotter step of an imaginary time propagator, which increases the fidelities reached around the phase transition of the gauge theory. We propose a non-probabilistic...
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