Recent content by Cael

I have another idea. What if photons are transmitted through fibre optics? Photon may travel slower in fibre optics but the time taken for each photon to travel to the other side should be constant, right?

True but one can still measure the time taken to reach the receiver, right? I'm just not sure if every photon have the same time taken to travel from sender to receiver or additional delay will be induced due to certain circumstances.

The Quantum Bit Error Rate (QBER) is the measurement of the percentage or probability of bit error across the quantum channel during key distribution. After obtaining the raw key, QBER can be calculated by taking the length of erroneous bits divided by length of raw key. In BB84 protocol, if an...

I'm trying to understand the time delay induced on each photon when several individual photons travel in an open space from a sender to a receiver for example in the application of Quantum Key Distribution. So what I understand so far is light(photon) travel around 299,792 km (186,282 miles) per...