Freiburg 2024 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 23: Poster I

Q 23.16: Poster

Tuesday, March 12, 2024, 17:00–19:00, Tent B

Role of dephasing in optimal transport of spin excitations in a two-dimensional, lossy lattice — •Andrei Skalkin, Razmik Unanyan, and Michael Fleischhauer — RPTU, Kaiserslautern

Noise is commonly regarded as an adverse effect disrupting communication and limiting efficiency of many processes. However, it has been shown [P. Rebentrost et al., New Journal of Physics 11, 2009] that decoherence processes can play a significant role in quantum transport facilitation. We study how a dephasing noise, acting on all sites with equal rate, improves spin excitation transport efficiency in a two-dimensional lattice with dipole-dipole long-range interaction. We provide a new mechanism of dephasing-assisted transport in ordered systems. The study includes both numerical and analytical approaches and may serve as a benchmark for experiments in the framework of optical lattices.

Keywords: Dephasing; 2D lattice; Noise-assisted transport