Spatial Non-Locality Induced Non-Markovian EIT in a Single Giant Atom

Abstract

In recent experiments, electromagnetically induced transparency (EIT) were observed with giant atoms, but nothing unconventional were found from the transmission spectra. In this letter, we show that unconventional EIT does exist in giant atoms, and indicate why it has not been observed so far. Different from these existing works, this letter presents a consistent theory including a real space method and a time delayed master equation for observing unconventional EIT. We discover that this phenomenon is a quantum effect which cannot be correctly described in a semi-classical way as those in recent works. Our theory shows that it can be observed when the time delay between two neighboring coupling points is comparable to the relaxation time of the atom, which is crucial for a future experimental observation. This new phenomenon results from inherent non-locality of the giant atom, which physically forces propagating fields to be standing waves in space and the atom exhibiting retardations in time. Our theory establishes a framework for application of nonlocal systems to quantum information processing.

6 pages, 3 figures, Comments are welcome

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Cited by in corpus (13)

• Non-Markovian disentanglement dynamics in double-giant-atom waveguide-QED systems
• Complex decoherence-free interactions between giant atoms
• Non-Markovian dynamics with a giant atom coupled to a semi-infinite photonic waveguide
• Single photon scattering from a chain of giant atoms coupled to a one-dimensional waveguide
• Catch and release of propagating bosonic field with non-Markovian giant atom
• Atom-photon dressed states in a waveguide-QED system with multiple giant atoms
• Single-photon scattering in giant-atom topological-waveguide-QED systems
• Non-Markovian dynamics with a driven three-level giant atom in a semi-infinite photonic waveguide
• Simulating and probing many-body quantum states in waveguide-QED systems with giant atoms
• Giant atom with disorders: Effects from imperfect couplings
• Exact dynamics and bound states of a cavity coupled to a two-dimensional reservoir
• Non-Markovian exceptional points in waveguide quantum electrodynamics
• Nonreciprocity enhanced Quantum Gyroscopes based on Surface Acoustic Waves