Impact of the form of weighted networks on the quantum extreme reservoir computation
- URL: http://arxiv.org/abs/2211.07841v2
- Date: Thu, 23 May 2024 07:34:34 GMT
- Title: Impact of the form of weighted networks on the quantum extreme reservoir computation
- Authors: Aoi Hayashi, Akitada Sakurai, Shin Nishio, William J. Munro, Kae Nemoto,
- Abstract summary: The quantum extreme reservoir computation (QERC) is a versatile quantum neural network model.
We show how a simple Hamiltonian model based on a disordered discrete time crystal with its simple implementation route provides nearly-optimal performance.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The quantum extreme reservoir computation (QERC) is a versatile quantum neural network model that combines the concepts of extreme machine learning with quantum reservoir computation. Key to QERC is the generation of a complex quantum reservoir (feature space) that does not need to be optimized for different problem instances. Originally, a periodically-driven system Hamiltonian dynamics was employed as the quantum feature map. In this work we capture how the quantum feature map is generated as the number of time-steps of the dynamics increases by a method to characterize unitary matrices in the form of weighted networks. Furthermore, to identify the key properties of the feature map that has sufficiently grown, we evaluate it with various weighted network models that could be used for the quantum reservoir in image classification situations. At last, we show how a simple Hamiltonian model based on a disordered discrete time crystal with its simple implementation route provides nearly-optimal performance while removing the necessity of programming of the quantum processor gate by gate.
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