Quantum entanglement achieved at room temperature in semiconductor wafers

"Entanglement is also one of nature's most elusive phenomena. Producing entanglement between particles requires that they start out in a highly ordered state, which is disfavored by thermodynamics, the process that governs the interactions between heat and other forms of energy."

This is not quite right. Entanglement itself it not elusive, it's ubiquitous. That is exactly the problem. It is isolated entanglement that is hard to achieve, i.e. two systems that are entangled with each other but not with anything else. And actually even that is not quite right because what you really want is N systems that are mutually entangled with each other (but not with anything else) for some controlled value of N, which is the number of bits in your quantum computer. The bigger N gets, the harder it becomes to keep all the parts from interacting (and hence becoming entangled with) their environment.