Quantum entanglement is not binary in the sense that it is not an all-or-nothing phenomenon. Entanglement is a fundamental concept in quantum mechanics that describes a correlation between two or more particles, where their states become linked in such a way that the state of one particle is instantaneously related to the state of the other(s), regardless of the distance between them.
When two particles are entangled, their states are no longer described as independent entities but rather as an entangled state that encompasses both particles. This entangled state cannot be decomposed into separate states for each particle. Instead, the state of the system as a whole is described by a joint probability distribution.
The degree of entanglement between particles can vary. There are different measures of entanglement that quantify the strength or amount of entanglement present in a system. For example, the concept of entanglement entropy provides a measure of the entanglement between different parts of a quantum system.
So, rather than being a binary condition, quantum entanglement exists on a continuum, ranging from no entanglement (when particles are in independent states) to maximum entanglement (when their states are maximally correlated).