Ronald Hanson

Quantum networks based on diamond spins   

QuTech and Kavli Institute of Nanoscience Delft   

The realization of a highly connected network of qubit registers is a central challenge for quantum information processing and long-distance quantum communication. Diamond spins associated with NV centers are promising building blocks for such a network as they combine a coherent optical interface (similar to that of trapped atomic qubits) [1] with a local register of robust and well-controlled nuclear spin qubits [2]. We can now exploit these features simultaneously to achieve new functionalities such as unconditional remote quantum teleportation [3].

Here we present our latest progress towards scalable quantum networks, including the realization of several rounds of quantum error correction using stabilizer measurements and real-time feedback, and the generation of entanglement over >1km distance.

[1] H. Bernien et al., Nature 497, 86 (2013)
[2] T. H. Taminiau et al., Nature Nanotechnology 9, 171 (2014)
[3] W. Pfaff et al., Science 345, 532 (2014)