On Monday, June 3, 2024, at 12:00 c.t., the next date of our Physics Colloquium will take place.
Speaker is Prof. Dr. Benedikt Fauseweh (TU Dortmund) on the topic "Digital Quantum Simulation on Modern Quantum Computers".
Understanding and simulating many-body quantum systems is an inherently challenging task. In 1981, Richard Feynman proposed that quantum systems could be effectively simulated by a computer that follows the same principles as quantum mechanics. The idea of a quantum computer was born. While many other applications for quantum computers have been discovered since then, Feynman's original idea, now called Digital Quantum Simulation (DQS), has evolved from analog methods to advanced digital platforms, driven by significant experimental progress, e.g., using ultracold atoms or trapped ions. In this talk, I will provide an overview of the progression of DQS, from its initial concept to current implementations [1]. Modern noisy quantum computers present challenges due to the non-errorcorrected nature of these systems. To navigate this landscape, novel quantum algorithms, especially hybrid classical-quantum algorithms [2], have been developed to fit the specifications of such devices. For DQS, the prevailing question today is: What problems are amenable to be simulated on noisy quantum computers? I will discuss recent work on simulating quantum many-body dynamics [3], algorithmic advances to detect ground state phase transitions and the potential of stabilizing exotic non-equilibrium phases of matter, e.g., discrete time crystals, using quantum-classical feedback.
[1] B. Fauseweh "Quantum many-body simulations on digital quantum computers: State-of-the-art and future challenges", Nat. Comm., 15, 2123, (2024)
[2] B. Fauseweh and J.-X. Zhu, "Quantum computing Floquet energy spectra," Quantum 7, 1063, (2023)
[3] B. Fauseweh and J.-X. Zhu, "Digital Quantum Simulation of Non-Equilibrium Quantum Many-Body Systems," Quantum Inf. Process, 20, 138, (2021)
Abstract of the presentation by Dr. Fauseweh.
The introduction will be given by Prof. Dr. Ilya Eremin.
The faculty cordially invites all interested parties. The event will take place in the lecture hall HNB. We offer coffee and cookies before the colloquium.
All dates of the Physics Colloquium can be found here.