2024/01/10 by Julius Bittermann, Bittermann, Julius Arthur, Matthias Fink +5
Engineering · Physics and Astronomy · #FOS: Physical sciences #Geophysics and Sensor Technology #Mechanical and Optical Resonators #Orbital Angular Momentum in Optics #Quantum Physics (quant-ph)
paper · pdf · doi:10.48550/arxiv.2401.05186
openalex publication_date 2024/01/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We show the targeted phase-manipulation of an entangled photonic Bell state via non-inertial motion. To this end, we place a very compact laboratory, consisting of a SPDC source and a Sagnac interferometer, on a rotating platform (non-inertial reference frame). The photon pairs of a \ketϕ-state are in a superposition of co- and counter-rotation. The phase of the \ketϕ-state is linearly dependent on the angular velocity of the rotating platform due to the Sagnac effect. We measure the visibility and certify entanglement with the Bell-CHSH parameter S. Additionally, we conduct a partial quantum state tomography on the Bell states in a non-inertial environment. Our experiment showcases the unitary transformation of an entangled state via non-inertial motion and constitutes not only a switch between a \ketϕ--state and a \ketϕ+-state but also a further experiment at the interplay of non-inertial motion and quantum physics.