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oe1(光电查) - 科学论文

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  • Quantum Memristors in Frequency-Entangled Optical Fields

    摘要： 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.

    关键词： quantum photonics,quantum neural networks,memristive systems,quantum memristors

    更新于2025-09-23 15:19:57

  • Dynamics of Quantum States in a System of 3 Quantum Dots with Dipole-Dipole Interaction

    摘要： We present the results of simulation of the dynamics of a 3 quantum dot array by means of numerical solution of the von Neumann equation. The trace over the states of phonon bath was taken by Feynman path integral numerical calculation. It is shown that simplistic system of 3 quantum dots with common phonon bath can implement XOR logic operation. The results of our model can be applied to the development of different quantum simulators, quantum gates, and quantum neural networks implemented in arrays of quantum dots.

    关键词： Feynman path integral,quantum neural networks,dipole-dipole interaction,quantum dots,von Neumann equation

    更新于2025-09-16 10:30:52