In a large quantum system comprising many interconnected parts, one can think about entanglement as the amount of quantum information shared between a given subsystem of qubits (represented as spheres with arrows) and the rest of the larger system. The entanglement within a quantum system can be categorized as area-law or volume-law based on how this shared information scales with the geometry of subsystems, as illustrated here. Credit: Eli Krantz, Krantz NanoArt
The advance offers a way to characterize a fundamental resource needed for
Qubits, or quantum bits, are the building blocks of a quantum computer. However, it is extremely difficult to make specific entangled states in many-qubit systems, let alone investigate them. There are also a variety of entangled states, and telling them apart can be challenging.
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