Weidt, S, Randall, J, Webster, S C, Lake, K, Webb, A E, Cohen, I, Navickas, T, Lekitsch, B, Retzker, A and Hensinger, W K (2016) Trapped-ion quantum logic with global radiation fields. Physical Review Letters, 117 (22). a220501. ISSN 0031-9007
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Abstract
Trapped ions are a promising tool for building a large-scale quantum computer. However, the number of required radiation fields for the realization of quantum gates in any proposed ion-based architecture scales with the number of ions within the quantum computer, posing a major obstacle when imagining a device with millions of ions. Here, we present a fundamentally different approach for trapped-ion quantum computing where this detrimental scaling vanishes. The method is based on individually controlled voltages applied to each logic gate location to facilitate the actual gate operation analogous to a traditional transistor architecture within a classical computer processor. To demonstrate the key principle of this approach we implement a versatile quantum gate method based on long-wavelength radiation and use this method to generate a maximally entangled state of two quantum engineered clock qubits with fidelity 0.985(12). This quantum gate also constitutes a simple-to-implement tool for quantum metrology, sensing, and simulation.
Item Type: | Article |
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Schools and Departments: | School of Mathematical and Physical Sciences > Physics and Astronomy |
Research Centres and Groups: | Astronomy Centre |
Subjects: | Q Science > QC Physics |
Depositing User: | Richard Chambers |
Date Deposited: | 06 Dec 2016 09:28 |
Last Modified: | 05 Jun 2020 14:15 |
URI: | http://sro.sussex.ac.uk/id/eprint/65811 |
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📧 Request an updateProject Name | Sussex Project Number | Funder | Funder Ref |
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Quantum technology with nanofabricated ion trap chips | G0308 | EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL | EP/G007276/1 |
UK Quantum Technology Hub: NQIT-Networked Quantum Information Technologies | G1503 | EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL | EP/M013243/1 |
UK Quantum Technology Hub for Sensors and Metrology | G1511 | EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL | EP/M013294/1 |
Integrated Quantum Information Technology | G0650 | EUROPEAN UNION | GA 270843 |
Unset | Unset | US Army | W911NF-14-2-0106 |
Unset | Unset | US Army | W911NF-12-2-0072 |