The quantum simulation of the 1D Ising chain has been done before by other research teams, including a group at Harvard University. The 1D chain is perfect for this because it has a well-known closed-form solution, which means that we can solve it classically without exhaustively simulating the quantum dynamics-a classically intractable task in general." "One reason is that it allows us to compare the behavior of our programmable quantum system with ideal Schrödinger dynamics, providing both strong evidence of quantum-ness and a benchmark of this quantum-ness. King, one of the researchers who carried out the study, told. "Coherent annealing has been something we've wanted to showcase for a long time," Andrew D. Their results, presented in a paper published in Nature Physics, could inform future quantum optimization and simulation efforts.
and Japan have recently simulated a quantum phase transition in a programmable 2,000 qubit 1D quantum Ising model. Researchers at D-Wave Systems and various institutes in Canada, the U.S. One approach that can be investigated using quantum simulations is quantum annealing, an optimization process based on engineered quantum fluctuations. Quantum simulations-realizations of quantum systems manifested using programmable simulation devices-have proved particularly valuable for determining the near-term potential of quantum computers.
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