Floquet Hamiltonian Engineering of an Isolated Many-Body Spin System

• URL: http://arxiv.org/abs/2105.01597v1
• Date: Tue, 4 May 2021 16:09:00 GMT
• Title: Floquet Hamiltonian Engineering of an Isolated Many-Body Spin System
• Authors: Sebastian Geier, Nithiwadee Thaicharoen, Cl\'ement Hainaut, Titus Franz, Andre Salzinger, Annika Tebben, David Grimshandl, Gerhard Z\"urn, Matthias Weidem\"uller
• Abstract summary: Controlling interactions is the key element for quantum engineering of many-body systems. We show how to transform a naturally given many-body Hamiltonian of a closed quantum system into an effective target Hamiltonian exhibiting vastly different dynamics.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Controlling interactions is the key element for quantum engineering of many-body systems. Using time-periodic driving, a naturally given many-body Hamiltonian of a closed quantum system can be transformed into an effective target Hamiltonian exhibiting vastly different dynamics. We demonstrate such Floquet engineering with a system of spins represented by Rydberg states in an ultracold atomic gas. Applying a sequence of spin manipulations, we change the symmetry properties of the effective Heisenberg XYZ Hamiltonian. As a consequence, the relaxation behavior of the total spin is drastically modified. The observed dynamics can be qualitatively captured by a semi-classical simulation. Synthesising a wide range of Hamiltonians opens vast opportunities for implementing quantum simulation of non-equilibrium dynamics in a single experimental setting.

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