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Home > What is IQFA ? > Investigated thematics (ART)

Quantum Simulation - QSIM

by Sebastien_Tanzilli - published on , updated on

- Leaders

Antoine Browaeys , Pascal Degiovanni , Tristan Meunier , & Simon Perdrix

- Aims of this thematic

Quantum simulation, on the other hand, is useful even under relatively high noise levels. Indeed, when we look at the fi-elds where it may have a major impact for society (e.g. in quantum chemistry and biochemistry, for the synthesis of specific purpose molecules, in nanotechnologies...), we realize that the quantum systems that need be simulated are relatively large. Those systems are undergoing high noise levels anyway. Hence, if the objective is to simulate noisy quantum systems effi ciently, then one does not need to await for the perfect quantum computer. The physical implementation quantum simulation is a middle term objective. I some sense, it has already started.

An essential purpose of this ART is to gather the community which is concerned by both the theoretical and the experimental aspects of quantum simulations. The kind of challenges that need to be addressed include:

  • Studying discrete models of quantum systems (quantum walks, quantum cellular automata, ...) which approximate continuous quantum systems in some rigorous sense;
  • Understanding what it means for a noisy quantum system simulates another;
  • Providing general purpose algorithms and methods (à la Numerical Analysis in Mathematics or à la Universality in Computer Science) for performing those simulations;
  • Identify new physical systems which can implement the aforementioned discrete models and algorithms;
  • Exploring the possibilities already offered by Ion traps, Integrated quantum optics, Quantum Optical Lattices, and Cold Atoms for performing quantum simulation experiments;
  • Evaluating state-of-the-art real-life levels of noise and control in those experiments;
  • Witnessing the rise of the first small-scale, quantum simulators.

Under certain stringent conditions, it can happen that quantum systems can be simulated efficiently by classical means (Bounded entanglement, Stabilizer formalism, ...). Quantum correlations can also be simulated at the cost of classical communications. These questions regarding the complexity and the limits of the classical simulation of quantum systems is also of great interest to this ART.

- Bibliography for all

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- Reports: state-of-the-art and future

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