Classical approach extends the range of noisy quantum computers
In simple terms : An illustration of how larger quantum systems can be partitioned according to the amount of entanglement (lines) between the spins (circles). The spins and entanglements can then be simulated in parallel with the interactions between them represented in a far simpler way, as on the right-hand diagram. (Courtesy: Andrew G Green) Quantum computers can now simulate much larger quantum systems than was previously thought possible thanks to algorithms developed by researchers in the UK and Germany. The new algorithms divide up quantum computational resources according to which parts of the simulation require them most, making it possible to extract information about a large quantum system from many smaller, more manageable calculations – in effect, running the simulation in parallel. The result should boost the capabilities of the current generation of so-called noisy intermediate scale quantum (NISQ) computers, which lack the computational resources required to perform