Quantum mechanics

Magnetic field

Quantum computer

Statistics

Realization (probability)

Quantum phases

Antiferromagnetism

Phase transition

Spins

Physics

Paramagnetism

Mathematics

Ising model

Spin glass

Condensed matter physics

Quantum

Quantum phase transition

Quantum critical point

Quantum simulator

Science

Simulating correlated electron systems Correlated electron systems are generally difficult to simulate because of limited capabilities of computational resources. Harris et al. used a D-Wave chip based on a large array of superconducting elements to simulate the phases of a complex magnetic system. They tuned the amount of frustration within the lattice and varied the effective transverse magnetic field, which revealed phase transitions between a paramagnetic, an ordered antiferromagnetic, and a spin-glass phase. The results compare well to theory for this spin-glass problem, validating the approach for simulating problems in materials physics. Science , this issue p. 162

Phase transitions in a programmable quantum spin glass simulator