Interaction induced non-reciprocal three-level quantum transport

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Besides its fundamental importance,non-reciprocity has also found many potential applications in quantum technol-ogy.Recently,many quantum systems have been proposed to realize non-reciprocity,but stable non-reciprocal process is still experimentally difficult in general,due to the needed cyclical interactions in artificial systems or operational difficul-ties in solid state materials.Here,we propose a new kind of interaction induced non-reciprocal operation,based on the conventional stimulated-Raman-adiabatic-passage (STIRAP) setup,which removes the experimental difficulty of requiring cyclical interaction,and thus it is directly implementable in various quantum systems.Furthermore,we also illustrate our proposal on a chain of three coupled superconducting transmons,which can lead to a non-reciprocal circulator with high fidelity without a ring coupling configuration as in the previous schemes or implementations.Therefore,our protocol pro-vides a promising way to explore fundamental non-reciprocal quantum physics as well as realize non-reciprocal quantum device.
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