The time distribution of quantum events

M Delina, Bambang Heru Iswanto, Handjoko Permana +1 more

Abstract The quantum key distribution provides a secure information exchange. The system employed a single photon as the messenger. In this study one-time pad (OTP) quantum key distribution provide a key which is use securely. For example, in a war. Therefore, it is not possible to share the secrete key in this condition, but the OTP can be generated several times as long as there is no eavesdropped detected. This paper discusses the simulation of a one-time pad quantum key distribution with event-by-event method.

Dick J. Hoekzema

Evgueni V. Kovarski

In view of a three-dimensional picture (3D) of probability to find a particle at a plane of the frequency and the time (PTF) becomes that process of absorption and process of radiation for two - level system have different direction on the time. Both processes are in the past or in the future depending on named transition due to reversible model of the two-level atom. The opportunity to know the last history of the resonant event for the absorption process is for quantum interference interaction or for the resonant radiation. On the contrary, to predict the resonant event in the future is possible only by use near resonant atom-field absorption or by use radiation at a fixed time. The problem of life time for a particle is entered through time of spontaneous radiation connected with trajectory of the quantum transition. It is offered to connect a trajectory of a particle during quantum transitions with distribution of probability to find a particle. The conception of the spectral history for events due to probability distribution is introduced for next discussion.

Lorenzo Maccone, Krzysztof Sacha

We propose a time-of-arrival operator in quantum mechanics by conditioning on a quantum clock. This allows us to bypass some of the problems of previous proposals, and to obtain a Hermitian time of arrival operator whose probability distribution arises from the Born rule and which has a clear physical interpretation. The same procedure can be employed to measure the "time at which some event happens" for arbitrary events (and not just specifically for the arrival time of a particle).