Squeezed States of Light
To understand squeezed states of light, we first need to change how we think about light. In classical physics, light is a wave that travels through space. In quantum mechanics,….
Tag: quantum uncertainty
Quantum Information Disturbance Trade-off
In classical physics, if you want to know about a system—like measuring a car’s speed or temperature—you can simply observe it. The act of measuring doesn’t significantly affect the car….
Quantum Entropy Measures
In classical information theory, entropy is used to measure uncertainty or the average information content of a message. This idea is extended in the quantum world through quantum entropy measures,….
Security Proofs in Quantum Cryptography
A security proof in cryptography is a formal demonstration that a cryptographic protocol is secure under certain assumptions. In classical cryptography, these assumptions are often based on the hardness of….