> Academic opportunities > PHD positions

Simulation of digital systems containing an quantum accelerator

Technological challenge: New computing paradigms, circuits and technologies, incl. quantum (learn more)

Department: Département Systèmes et Circuits Intégrés Numériques (LIST)

Laboratory: Laboratoire Fonctions Innovantes pour circuits Mixtes

Start Date: 01-09-2022

Location: Grenoble

CEA Code: SL-DRT-22-0647

Contact: eric.guthmuller@cea.fr

There is a huge media hype about quantum computers, but we are still far from having a quantum computer available. There are software simulators, limited in the number of QuBits that can be emulated, and experiments with a few QuBits available online. Nevertheless, we know that the final machine will be a classical computer connected to a quantum accelerator made of a large quantity of physical QuBits driven by electronics. This electronics will have an essential role: to launch the experiments, to allocate the physical QuBits, to adapt the quantum circuit to the physical topology, to manage the error corrections, to drive the quantum instructions, to carry out the measurements, etc. There are still a lot of unanswered questions. The one we wish to address in this thesis is the constitution by simulation of the control electronics of the quantum accelerator (which is the "micro architecture" in a classical computer). Several hypotheses have been proposed in the literature which are not yet validated. In this thesis we propose to build a high level simulator, allowing to test these different hypotheses of micro architecture. This simulator will use existing supercomputers for the functional simulation of QuBits, will simulate different hypotheses by running quantum algorithms from the literature. This simulator will model the operating characteristics of the final quantum computer by feeding it with existing performance models. Links will be made with (1) current work at CEA Grenoble on the creation of physical QuBits whose characterization will be able to feed the simulator and with (2) works on the topology of sets of physical QuBits which is under development. The candidate should have a good knowledge of computer architecture, have notions in the field of quantum computing and knowledge in the field of modeling/performance measurement. The main steps of the thesis will be the state-of-the-art part which will include the works currently in progress at the CEA, the definition and design of a simulation platform and experiments with this platform whose performance model will be fed little by little by the results of the experiments in progress at the CEA.

See all positions Download the offer (.zip)

Email Bookmark and Share