Journal
PHYSICAL REVIEW LETTERS
Volume 117, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.117.220501
Keywords
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Categories
Funding
- U.K. Engineering and Physical Sciences Research Council [EP/G007276/1]
- U.K. Engineering and Physical Sciences Research Council [UK Quantum Technology hub for Networked Quantum Information Technologies] [EP/M013243/1]
- U.K. Engineering and Physical Sciences Research Council [UK Quantum Technology hub for Sensors and Metrology] [EP/M013294/1]
- European Commissions Seventh Framework Programme (FP7) [270843]
- Army Research Laboratory [W911NF-12-2-0072]
- U.S. Army Research Office [W911NF-14-2-0106]
- University of Sussex
- Israel Science Foundation [039-8823]
- European commission (STReP EQUAM Grant) [323714]
- DIP program [FO 703/2-1]
- US Army Research Office [W911NF-15-1-0250]
- Niedersachsen-Israeli Research Cooperation Program
- EPSRC [EP/E011136/1, EP/M013294/1, EP/M013243/1, EP/G007276/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E011136/1, EP/M013243/1, EP/M013294/1, EP/G007276/1, 1511176] Funding Source: researchfish
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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.
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