Experimental Realization of Nonunitary Multiqubit Operations
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Date
2024-01-26
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Journal Article
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yes
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Abstract
We demonstrate a novel experimental tool set that enables irreversible multiqubit operations on a quantum platform. To exemplify our approach, we realize two elementary nonunitary operations: the or and nor gates. The electronic states of two trapped Ca40+ ions encode the logical information, and a cotrapped Sr88+ ion provides the irreversibility of the gate by a dissipation channel through sideband cooling. We measure 87% and 81% success rates for the or and nor gates, respectively. The presented methods are a stepping stone toward other nonunitary operations such as in quantum error correction and quantum machine learning.
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published
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132 (4)
Pages / Article No.
40602
Publisher
American Physical Society
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03892 - Home, Jonathan / Home, Jonathan
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Funding
820495 - Advanced quantum computing with trapped ions (EC)
186040 - Dissipation Engineering of Fault-Tolerant Quantum Computation and Phases for Quantum Metrology (SNF)
ETH-49 20-2 - Dissipative Training of Quantum Neural Networks (DisTraQt) (ETHZ)
186040 - Dissipation Engineering of Fault-Tolerant Quantum Computation and Phases for Quantum Metrology (SNF)
ETH-49 20-2 - Dissipative Training of Quantum Neural Networks (DisTraQt) (ETHZ)