Techniques for temporal quantum key distribution between at least a first entity and a second entity include measuring an arrival time of each of a plurality of photons within each of a set of time frames. The arrival time can correspond to one of the plurality of time bins within the time frame. Measuring can occur in a randomly selected one of at least two mutually unbiased bases. The mutually unbiased bases can include a basis corresponding to a measurement with dispersion and a basis corresponding to a measurement without dispersion. The randomly selected basis for each time frame can be communicated, via a classical communications channel. A quantum key can be generated from the time bins corresponding to the arrival time of photons within at least some of the time frames for which the randomly selected basis is consistent between the first and the second entity.