Theory of time-bin-entangled photons from quantum emitters

Titelangaben

Bracht, Thomas K. ; Kappe, Florian ; Cygorek, Moritz ; Seidelmann, Tim ; Karli, Yusuf ; Remesh, Vikas ; Weihs, Gregor ; Axt, Vollrath Martin ; Reiter, Doris E.:
Theory of time-bin-entangled photons from quantum emitters.
In: Physical Review A. Bd. 110 (2024) . - 063709.
ISSN 1094-1622
DOI: https://doi.org/10.1103/PhysRevA.110.063709

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Abstract

Entangled photon pairs form the foundation for many applications in the realm of quantum communica- tion. For fiber-optic transfer of entangled photon pairs, time-bin encoding offers improved stability compared to polarization-encoded qubits. Here, we lay the theoretical foundations to describe the measurement of time-bin-entangled photons. We derive multitime correlation functions of the time-bin-encoded photon pairs, corresponding to quantum state tomographic measurements. Our theory provides a starting point to extend the simulations to include all kinds of loss or decoherence effects that apply in a specific quantum system for realistic simulation for time-bin entanglement from quantum emitters.