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Title: | Quantum transfer of interacting qubits |
Authors: | Apollaro, Tony John George Lorenzo, Salvatore Plastina, Francesco Consiglio, Mirko Życzkowski, Karol |
Keywords: | Quantum theory Quantum maps Quantum systems Quantum computing |
Issue Date: | 2022 |
Publisher: | IOP Publishing Ltd |
Citation: | Apollaro, T. J. G., Lorenzo, S., Plastina, F., Consiglio, M., & Zyczkowski, K. (2022). Quantum transfer of interacting qubits. New Journal of Physics, 24, 083025. |
Abstract: | The transfer of quantum information between different locations is key to many quantum information processing tasks. Whereas, the transfer of a single qubit state has been extensively investigated, the transfer of a many-body system configuration has insofar remained elusive. We address the problem of transferring the state of n interacting qubits. Both the exponentially increasing Hilbert space dimension, and the presence of interactions significantly scale-up the complexity of achieving high-fidelity transfer. By employing tools from random matrix theory and using the formalism of quantum dynamical maps, we derive a general expression for the average and the variance of the fidelity of an arbitrary quantum state transfer protocol for n interacting qubits. Finally, by adopting a weak-coupling scheme in a spin chain, we obtain the explicit conditions for high-fidelity transfer of three and four interacting qubits. |
URI: | https://www.um.edu.mt/library/oar/handle/123456789/101462 |
Appears in Collections: | Scholarly Works - FacSciPhy |
Files in This Item:
File | Description | Size | Format | |
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Quantum_transfer_of_interacting_qubits.pdf | 2.75 MB | Adobe PDF | View/Open |
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