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Quantum wave mixing and visualisation of coherent and superposed photonic states in a waveguide.

ABSTRACT: Superconducting quantum systems (artificial atoms) have been recently successfully used to demonstrate on-chip effects of quantum optics with single atoms in the microwave range. In particular, a well-known effect of four wave mixing could reveal a series of features beyond classical physics, when a non-linear medium is scaled down to a single quantum scatterer. Here we demonstrate the phenomenon of quantum wave mixing (QWM) on a single superconducting artificial atom. In the QWM, the spectrum of elastically scattered radiation is a direct map of the interacting superposed and coherent photonic states. Moreover, the artificial atom visualises photon-state statistics, distinguishing coherent, one- and two-photon superposed states with the finite (quantised) number of peaks in the quantum regime. Our results may give a new insight into nonlinear quantum effects in microwave optics with artificial atoms.

SUBMITTER: Dmitriev AY

PROVIDER: S-EPMC5676721 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature

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Quantum wave mixing and visualisation of coherent and superposed photonic states in a waveguide.

Dmitriev A Yu AY Shaikhaidarov R R Antonov V N VN Hönigl-Decrinis T T Astafiev O V OV

Nature communications 20171107 1

Superconducting quantum systems (artificial atoms) have been recently successfully used to demonstrate on-chip effects of quantum optics with single atoms in the microwave range. In particular, a well-known effect of four wave mixing could reveal a series of features beyond classical physics, when a non-linear medium is scaled down to a single quantum scatterer. Here we demonstrate the phenomenon of quantum wave mixing (QWM) on a single superconducting artificial atom. In the QWM, the spectrum o ...[more]

PMID: 29116086

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