Scientists create time crystals, a new state of matter that defies the second law of thermodynamics by exhibiting perpetual motion. While not useful for time travel, these crystals offer insights into quantum mechanics and may have future applications in quantum computing.

Quantum computers hold immense potential due to qubits' ability to represent 1s and 0s simultaneously. However, creating and maintaining qubits is challenging. Silicon-based qubits are promising because they are compatible with existing chip fabrication techniques.

Real teleportation from Star Trek isn't possible, but scientists achieved quantum teleportation - transferring information, not matter. This can be used for ultra-secure communication and a quantum internet. Quantum teleportation is a step towards quantum computers, which could solve complex problems.

Light is a wave and a particle. It holds the key to quantum computers, which could revolutionize many fields from physics to finance. Quantum computers use qubits (not bits) and can perform calculations much faster than classical computers. Scientists in China achieved quantum supremacy with a machine that manipulates photons (light particles). This is a significant step towards a universal quantum computer.