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Journal Article

Emulation of complex open quantum systems using superconducting qubits


Eisfeld,  Alexander
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Mostame, S., Huh, J., Kreisbeck, C., Kerman, A. J., Fujita, T., Eisfeld, A., et al. (2017). Emulation of complex open quantum systems using superconducting qubits. Quantum Information Processing, 16(2): 44. doi:10.1007/s11128-016-1489-3.

Cite as: https://hdl.handle.net/21.11116/0000-0001-2B26-5
With quantum computers being out of reach for now, quantum simulators are alternative devices for efficient and accurate simulation of problems that are challenging to tackle using conventional computers. Quantum simulators are classified into analog and digital, with the possibility of constructing "hybrid" simulators by combining both techniques. Here we focus on analog quantum simulators of open quantum systems and address the limit that they can beat classical computers. In particular, as an example, we discuss simulation of the chlorosome light-harvesting antenna from green sulfur bacteria with over 250 phonon modes coupled to each electronic state. Furthermore, we propose physical setups that can be used to reproduce the quantum dynamics of a standard and multiple-mode Holstein model. The proposed scheme is based on currently available technology of superconducting circuits consist of flux qubits and quantum oscillators.