Southwest Quantum Information and Technology

From a loophole-free Bell test to a quantum Internet

Presenting Author: Ronald Hanson, (TU 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 first loophole-free violation of Bell's inequalities [4]. References: [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). [4] B. Hensen et al., Nature 526, 682 (2015).

(Session 1 : Thursday from 8:45 am - 9:30 am)