Many-body decoherence dynamics and optimised operation of a single-photon switch
arXiv:1607.01984 · doi:10.1088/1367-2630/18/9/092001
Abstract
We develop a theoretical framework to characterize the decoherence dynamics due to multi-photon scattering in an all-optical switch based on Rydberg atom induced nonlinearities. By incorporating the knowledge of this decoherence process into optimal photon storage and retrieval strategies, we establish optimised switching protocols for experimentally relevant conditions, and evaluate the corresponding limits in the achievable fidelities. Based on these results we work out a simplified description that reproduces recent experiments [arXiv:1511.09445] and provides a new interpretation in terms of many-body decoherence involving multiple incident photons and multiple gate excitations forming the switch. Aside from offering insights into the operational capacity of realistic photon switching capabilities, our work provides a complete description of spin wave decoherence in a Rydberg quantum optics setting, and has immediate relevance to a number of further applications employing photon storage in Rydberg media.
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Cited by in corpus (7)
- A concise review of Rydberg atom based quantum computation and quantum simulation
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- Induced cavities for photonic quantum gates
- Electromagnetically induced transparency of ultralong-range Rydberg molecules
- Metastable decoherence-free subspaces and electromagnetically induced transparency in interacting many-body systems
- Quantum Reflections of Nonlocal Optical Solitons in a Cold Rydberg Atomic Gas
- Manipulating photonic quantum states with long-range interactions