Real-Time Simulation of Large Open Quantum Spin Systems driven by Measurements
arXiv:1405.7882 · doi:10.1103/PhysRevB.90.241104
Abstract
We consider a large quantum system with spins whose dynamics is driven entirely by measurements of the total spin of spin pairs. This gives rise to a dissipative coupling to the environment. When one averages over the measurement results, the corresponding real-time path integral does not suffer from a sign problem. Using an efficient cluster algorithm, we study the real-time evolution of a 2-d Heisenberg antiferromagnet, which is driven to a disordered phase, either by sporadic measurements or by continuous monitoring described by Lindblad evolution.
5 pages, 7 figures
References in corpus (15)
- Real time evolution using the density matrix renormalization group
- Quantum States and Phases in Driven Open Quantum Systems with Cold Atoms
- Computational complexity and fundamental limitations to fermionic quantum Monte Carlo simulations
- Matrix Product Density Operators: Simulation of finite-T and dissipative systems
- Dynamical Phase Transitions and Instabilities in Open Atomic Many-Body Systems
- Atomic Quantum Simulation of U(N) and SU(N) Non-Abelian Lattice Gauge Theories
- A cold-atom quantum simulator for SU(2) Yang-Mills lattice gauge theory
- Non-thermal fixed points: effective weak-coupling for strongly correlated systems far from equilibrium
- Spectral functions in one-dimensional quantum systems at T>0
- Optical Abelian Lattice Gauge Theories
- Dissipative Dynamics and Phase Transitions in Fermionic Systems
- Quantum control by von Neumann measurements
- Computation by measurements: a unifying picture
- Constraint Effective Potential of the Staggered Magnetization in an Antiferromagnet
- Nested Cluster Algorithm for Frustrated Quantum Antiferromagnets