3 papers
quant-ph2026
Gravitational time dilation in quantum clock interferometry with entangled multi-photon states and quantum memories
Mustafa Gündoğan, Roy Barzel, Dennis Rätzel
Gravitational time dilation implies that clocks held at different heights accumulate different proper times. We analyze a memory-assisted quantum clock interferometer in which a fr…
quant-ph2025
Frequency shifts due to relativistic effects and retardation in continuous variable quantum key distribution
Emanuel Schlake, Jan P. Hackstein, Roy Barzel +3
Space-based quantum communication naturally involves satellites and ground stations exchanging optical signals at high altitudes and large relative velocities. Starting from genera…
gr-qc2024
Quantum Imaging of Gravity
Marian Cepok, Dennis Rätzel, Claus Lämmerzahl
We propose a quantum imaging-inspired setup for measuring gravitational fields using an atom that emits a photon at one of two possible locations. The atom acquires a gravitational…