Summary:
- Scientists have found a way to use 19th-century optics technology to improve quantum encryption, which is a secure way to transmit information.
- They used a device called a Michelson interferometer, which was invented in the 1800s, to create a quantum key distribution system that is more stable and reliable than previous methods.
- This advance in quantum encryption could help protect sensitive information, such as financial data or national security communications, from being intercepted by hackers.