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Learning temporal data with a variational quantum recurrent neural network
- Source :
- Physical Review A. 103
- Publication Year :
- 2021
- Publisher :
- American Physical Society (APS), 2021.
-
Abstract
- We propose a method for learning temporal data using a parametrized quantum circuit. We use the circuit that has a similar structure as the recurrent neural network which is one of the standard approaches employed for this type of machine learning task. Some of the qubits in the circuit are utilized for memorizing past data, while others are measured and initialized at each time step for obtaining predictions and encoding a new input datum. The proposed approach utilizes the tensor product structure to get nonlinearity with respect to the inputs. Fully controllable, ensemble quantum systems such as an NMR quantum computer is a suitable choice of an experimental platform for this proposal. We demonstrate its capability with Simple numerical simulations, in which we test the proposed method for the task of predicting cosine and triangular waves and quantum spin dynamics. Finally, we analyze the dependency of its performance on the interaction strength among the qubits in numerical simulation and find that there is an appropriate range of the strength. This work provides a way to exploit complex quantum dynamics for learning temporal data.<br />9 pages, 5 figures
- Subjects :
- Physics
Quantum Physics
Computer simulation
Quantum dynamics
FOS: Physical sciences
01 natural sciences
010305 fluids & plasmas
Temporal database
Nonlinear system
Quantum circuit
Recurrent neural network
Qubit
0103 physical sciences
Quantum Physics (quant-ph)
010306 general physics
Spin (physics)
Algorithm
Quantum
Quantum computer
Subjects
Details
- ISSN :
- 24699934 and 24699926
- Volume :
- 103
- Database :
- OpenAIRE
- Journal :
- Physical Review A
- Accession number :
- edsair.doi.dedup.....49bb449e277522309cc36f7c752f8e86