91̽��

David Lucas, Clarendon Lab, 91̽��

Abstract:
Trapped-ion qubits are one of the leading platforms for quantum computing. Combined with photonic interconnects, trapped-ion processors can form the basis of a quantum network. Our apparatus in 91̽�� consists of two independent ion traps, separated by 2 metres, linked via a single-photon optical fibre interface. I will describe our recent demonstrations of quantum technological applications in the areas of cryptography, metrology and information processing [1,2,3], as well as preliminary results on distributed quantum computing. I will outline future directions in these areas, as well as in tests of basic physics.

[1] “Experimental quantum key distribution certified by Bell's theorem”, 
D.P.Nadlinger et al., Nature 2022.
[2] “An elementary quantum network of entangled optical atomic clocks”,
B.C.Nichol, R.Srinivas et al., Nature 2022.
[3] “Verifiable Blind Quantum Computing with Trapped Ions and Single Photons”, 
P.Drmota et al., Phys. Rev. Lett. 2024.