+A **quantum system** is any physical system where the principles of [Quantum Mechanics](/wiki/Quantum_Mechanics) significantly govern its behavior. At this fundamental scale, matter and energy reveal profound characteristics, such as existing in multiple states simultaneously ([Superposition](/wiki/Superposition)) or becoming intricately linked across space.
+## See also
+- [Quantum Field Theory](/wiki/Quantum_Field_Theory)
+- [Entanglement](/wiki/Entanglement)
+- [Quantum Computing](/wiki/Quantum_Computing)