Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MON: Monday Contributed Sessions

MON 7: Foundational / Mathematical Aspects – Quantum Measurement

MON 7.8: Vortrag

Montag, 8. September 2025, 16:00–16:15, ZHG008

Measuring the speed of quantum particles without a round-trip under non-synchronized quantum clocks — •Tomer Shushi — Ben-Gurion University of the Negev, Beer Sheva, Israel

In this talk, we show that it is possible, in principle, to measure the velocity of particles that travel at the speed of light without assuming a round-trip once we adopt a quantum mechanical description under two boundary conditions to the state of the quantum system followed by the two-state-vector formalism while assuming non-synchronized quantum clocks with unknown time dilation [1]. The weak value of velocity can be measured for a test particle that has a clock that is not synchronized with the clock of the quantum particle. Following the proposed setup, when the weak value of the velocity is known even without knowing the time states of the system, such a weak velocity is the two-way speed of light. We further explore some fundamental implications of the setup. The proposed approach opens a new avenue toward measuring the velocities of quantum particles while overcoming relativistic issues regarding the synchronization of clocks. [1] Shushi, T. (2025). Measuring the speed of quantum particles without a round-trip under non-synchronized quantum clocks. Proceedings of the Royal Society A. 481: 20240708.

Keywords: quantum clocks; quantum foundations; relativistic causality; time dilation; two-state-vector-formalism