Title: experimental realisation of multi-qubit gates using electron paramagnetic resonance
Quantum information processing promises to revolutionise computing; quantum algorithms have been discovered that address common tasks significantly more efficiently than their classical counterparts. For a physical system to be a viable quantum computer it must be possible to initialise its quantum...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Springer Nature
2023
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| _version_ | 1826311400820047872 |
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| author | Little, EJ Mrozek, J Rogers, CJ Liu, J McInnes, EJL Bowen, AM Ardavan, A Winpenny, REP |
| author_facet | Little, EJ Mrozek, J Rogers, CJ Liu, J McInnes, EJL Bowen, AM Ardavan, A Winpenny, REP |
| author_sort | Little, EJ |
| collection | OXFORD |
| description | Quantum information processing promises to revolutionise computing; quantum algorithms have been discovered that address common tasks significantly more efficiently than their classical counterparts. For a physical system to be a viable quantum computer it must be possible to initialise its quantum state, to realise a set of universal quantum logic gates, including at least one multi-qubit gate, and to make measurements of qubit states. Molecular Electron Spin Qubits (MESQs) have been proposed to fulfil these criteria, as their bottom-up synthesis should facilitate tuning properties as desired and the reproducible production of multi-MESQ structures. Here we explore how to perform a two-qubit entangling gate on a multi-MESQ system, and how to readout the state via quantum state tomography. We propose methods of accomplishing both procedures using multifrequency pulse Electron Paramagnetic Resonance (EPR) and apply them to a model MESQ structure consisting of two nitroxide spin centres. Our results confirm the methodological principles and shed light on the experimental hurdles which must be overcome to realise a demonstration of controlled entanglement on this system. |
| first_indexed | 2024-03-07T08:09:18Z |
| format | Journal article |
| id | oxford-uuid:3c93a225-5b63-4057-8a9b-980d14cc41b9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:09:18Z |
| publishDate | 2023 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | oxford-uuid:3c93a225-5b63-4057-8a9b-980d14cc41b92023-11-14T16:12:07ZTitle: experimental realisation of multi-qubit gates using electron paramagnetic resonanceJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3c93a225-5b63-4057-8a9b-980d14cc41b9EnglishSymplectic ElementsSpringer Nature2023Little, EJMrozek, JRogers, CJLiu, JMcInnes, EJLBowen, AMArdavan, AWinpenny, REPQuantum information processing promises to revolutionise computing; quantum algorithms have been discovered that address common tasks significantly more efficiently than their classical counterparts. For a physical system to be a viable quantum computer it must be possible to initialise its quantum state, to realise a set of universal quantum logic gates, including at least one multi-qubit gate, and to make measurements of qubit states. Molecular Electron Spin Qubits (MESQs) have been proposed to fulfil these criteria, as their bottom-up synthesis should facilitate tuning properties as desired and the reproducible production of multi-MESQ structures. Here we explore how to perform a two-qubit entangling gate on a multi-MESQ system, and how to readout the state via quantum state tomography. We propose methods of accomplishing both procedures using multifrequency pulse Electron Paramagnetic Resonance (EPR) and apply them to a model MESQ structure consisting of two nitroxide spin centres. Our results confirm the methodological principles and shed light on the experimental hurdles which must be overcome to realise a demonstration of controlled entanglement on this system. |
| spellingShingle | Little, EJ Mrozek, J Rogers, CJ Liu, J McInnes, EJL Bowen, AM Ardavan, A Winpenny, REP Title: experimental realisation of multi-qubit gates using electron paramagnetic resonance |
| title | Title: experimental realisation of multi-qubit gates using electron paramagnetic resonance |
| title_full | Title: experimental realisation of multi-qubit gates using electron paramagnetic resonance |
| title_fullStr | Title: experimental realisation of multi-qubit gates using electron paramagnetic resonance |
| title_full_unstemmed | Title: experimental realisation of multi-qubit gates using electron paramagnetic resonance |
| title_short | Title: experimental realisation of multi-qubit gates using electron paramagnetic resonance |
| title_sort | title experimental realisation of multi qubit gates using electron paramagnetic resonance |
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