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Quantum Memristors in Frequency-Entangled Optical Fields.


ABSTRACT: A quantum memristor is a passive resistive circuit element with memory, engineered in a given quantum platform. It can be represented by a quantum system coupled to a dissipative environment, in which a system-bath coupling is mediated through a weak measurement scheme and classical feedback on the system. In quantum photonics, such a device can be designed from a beam splitter with tunable reflectivity, which is modified depending on the results of measurements in one of the outgoing beams. Here, we show that a similar implementation can be achieved with frequency-entangled optical fields and a frequency mixer that, working similarly to a beam splitter, produces state superpositions. We show that the characteristic hysteretic behavior of memristors can be reproduced when analyzing the response of the system with respect to the control, for different experimentally attainable states. Since memory effects in memristors can be exploited for classical and neuromorphic computation, the results presented in this work could be a building block for constructing quantum neural networks in quantum photonics, when scaling up.

SUBMITTER: Gonzalez-Raya T 

PROVIDER: S-EPMC7079656 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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Quantum Memristors in Frequency-Entangled Optical Fields.

Gonzalez-Raya Tasio T   Lukens Joseph M JM   Céleri Lucas C LC   Sanz Mikel M  

Materials (Basel, Switzerland) 20200214 4


A quantum memristor is a passive resistive circuit element with memory, engineered in a given quantum platform. It can be represented by a quantum system coupled to a dissipative environment, in which a system-bath coupling is mediated through a weak measurement scheme and classical feedback on the system. In quantum photonics, such a device can be designed from a beam splitter with tunable reflectivity, which is modified depending on the results of measurements in one of the outgoing beams. Her  ...[more]

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