Excitation injector in an atomic chain: long-ranged transport and efficiency amplification

Abstract

We investigate the transport of energy in a linear chain of two-level quantum emitters ("atoms") weakly coupled to a blackbody radiation bath. We show that, simply by displacing one or more atoms from their regular-chain positions, the efficiency of the energy transport can be considerably amplified of at least one order of magnitude. Besides, in configurations providing an efficiency greater than $100\%$ , the distance between the two last atoms of the chain can be up to 20 times larger than the one in the regular chain, thus achieving a much longer-range energy transport. By performing both a stationary and time-dependent analysis, we ascribe this effect to an elementary block of three atoms, playing the role of excitation injector from the blackbody bath to the extraction site. By considering chains with up to 7 atoms, we also show that the amplification is robust and can be further enhanced up to $1400\%$.

References in corpus (20)

• Quantum information with Rydberg atoms
• QuTiP 2: A Python framework for the dynamics of open quantum systems
• QuTiP: An open-source Python framework for the dynamics of open quantum systems
• Phononics: Manipulating heat flow with electronic analogs and beyond
• Environment-Assisted Quantum Walks in Photosynthetic Energy Transfer
• Thermal Logic Gates: Computation with phonons
• Extraordinary exciton conductance induced by strong coupling
• Noise-assisted energy transfer in quantum networks and light-harvesting complexes
• Cavity enhanced transport of excitons
• Controlling and measuring quantum transport of heat in trapped-ion crystals
• Nonequilibrium Energy Transfer at Nanoscale: A Unified Theory from Weak to Strong Coupling
• Harvesting Excitons Through Plasmonic Strong Coupling
• Symmetry-enhanced supertransfer of delocalized quantum states
• Quantum Dots at Room Temperature carved out from Few-Layer Graphene
• Quantum thermal machines with single nonequilibrium environments
• Cooperative Robustness to Static Disorder: Superradiance and localization in a nanoscale ring to model natural light-harvesting systems
• Quantum transport in quantum networks and photosynthetic complexes at the steady state
• Creation and protection of entanglement in systems out of thermal equilibrium
• Quantum thermal machine acting on a many-body quantum system: role of correlations in thermodynamic tasks
• Collective Förster energy transfer modified by the planar metallic mirror

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