What is quantum displacement?

Quantum displacement refers to the smallest possible distance that a quantum particle can be moved from its initial position. It occurs due to the uncertainty principle of quantum mechanics, which states that the position and momentum of a particle cannot be simultaneously known with 100% accuracy. As a result, even if a particle is initially at rest, it will still have an uncertain position and momentum, leading to its displacement over time. This effect is also known as quantum diffusion or quantum tunneling and plays a significant role in a variety of quantum systems, including quantum computing and quantum cryptography.