Many-body hierarchy of dissipative timescales in a quantum computer

We show that current noisy quantum computers are ideal platforms for the simulation of quantum many-body dynamics in generic open systems. We demonstrate this using the IBM Quantum Computer as an experimental platform for confirming the theoretical prediction from Wang et al., [Phys. Rev. Lett. 124, 100604 (2020)] of an emergent hierarchy of relaxation timescales of many-body observables involving different numbers of qubits. Using different protocols, we leverage the intrinsic dissipation of the machine responsible for gate errors, to implement a quantum simulation of generic (i.e., structureless) local dissipative interactions.

Automated summary

Current noisy quantum computers are ideal platforms for simulating quantum many-body dynamics in generic open systems. Using the IBM Quantum Computer, the experimental verification of the theoretical prediction regarding the emergent hierarchy of relaxation timescales was achieved. By leveraging the intrinsic dissipation of the machine responsible for gate errors, a quantum simulation of generic local dissipative interactions was successfully implemented.