Quantum limits refer to the fundamental constraints imposed by quantum mechanics on the precision of measurements and the performance of devices. These limits arise from the inherent uncertainty in quantum systems, as described by the Heisenberg Uncertainty Principle, which states that certain pairs of properties, like position and momentum, cannot be simultaneously measured with arbitrary precision. In practical terms, quantum limits affect technologies such as quantum computing, quantum cryptography, and sensitive measurement devices like gravitational wave detectors. As researchers push the boundaries of these technologies, understanding and overcoming quantum limits becomes crucial for improving their efficiency and accuracy.