Send to

Choose Destination
Phys Rev Lett. 2016 Nov 25;117(22):220501. Epub 2016 Nov 23.

Trapped-Ion Quantum Logic with Global Radiation Fields.

Author information

Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom.
QOLS, Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Givat Ram, Israel.


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.

Supplemental Content

Full text links

Icon for American Physical Society
Loading ...
Support Center