Many-body Hierarchy of Dissipative Timescales in a Quantum Computer
arXiv:2011.08853 · doi:10.1103/PhysRevResearch.3.023190
Abstract
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 [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.
8 pages, 8 figures
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- Entanglement Entropy of Non-Hermitian Eigenstates and the Ginibre Ensemble
- Keldysh Wormholes and Anomalous Relaxation in the Dissipative Sachdev-Ye-Kitaev Model
- Renyi Entropy Dynamics and Lindblad Spectrum for Open Quantum System
- A quantum algorithm for solving open system dynamics on quantum computers using noise
- Random matrix theory for quantum and classical metastability in local Liouvillians
- Spectral and steady-state properties of fermionic random quadratic Liouvillians
- Long-Time Error-Mitigating Simulation of Open Quantum Systems on Near Term Quantum Computers
- Quantum many-body Jarzynski equality and dissipative noise on a digital quantum computer