Jan 19 – 30, 2015
Ecole de Physique des Houches
Europe/Zurich timezone

Linear Paul Trap Design for Scalable Quantum Information Processing

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Ecole de Physique des Houches

Ecole de Physique des Houches



Ms Sarah Woodrow (University of Oxford)


In the Ion Trap Quantum Computing group at Oxford we are working towards demonstrating the building blocks of a scalable quantum computer. Using hyperfine states of $^{43}\text{Ca}$ ions confined in a linear Paul trap we have demonstrated state preparation, state readout, single qubit operations, and two-qubit entangling gates, all below the fault-tolerant error threshold. An important ingredient for a freely scalable architecture is a remote entangling link. We plan to implement this by linking together two multi-ion traps using a photonic interconnect. This poster presents some design details for a macroscopic linear ion trap which will be used to implement this photonic interconnect. The trap has been reduced in size from the previous design by nearly 50% while still maintaining the same ion-electrode distances, requiring careful design choices to minimise manufacturing tolerances. We have also identified some key technical limitations which have contributed to the two-qubit gate error, and optimised the design to further reduce these errors.

Primary author

Ms Sarah Woodrow (University of Oxford)

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