First IoP Colloquium of 2022 with Ronald Hanson.
You are cordially invited to the first Institute of Physics (IoP) Colloquium of 2022 !
The colloquium will be given in person on site. Come and listen to our special guest Ronald Hanson.
*When and where?* 24 March 2022 16:00 sharp in Turingzaal, CWI.
Come and listen to our special guest Ronald Hanson. If you would like to
speak with Ronald outside the colloquium, please sign up here:
After the colloquium there will be drinks at the Eulerzaal.
QuTech and Kavli Institute of Nanoscience, Delft University of Technology,
*Host: René Gerritsma*
*Towards a Quantum Internet: status, progress and challenges *
Entanglement – the property that particles can share a single quantum state
- is arguably the most counterintuitive yet potentially most powerful
element in quantum theory. The non-local features of quantum theory are
highlighted by the conflict between entanglement and local causality
discovered by John Bell. Decades of Bell inequality tests, culminating in a
series of loophole-free tests in 2015, have confirmed the non-locality of
Future quantum networks  may harness these unique features of
entanglement in a range of exciting applications, such as blind quantum
computation, secure communication, enhanced metrology for astronomy and
time-keeping as well as fundamental investigations. To fulfill these
promises, a strong worldwide effort is ongoing to gain precise control over
the full quantum dynamics of multi-particle nodes and to wire them up using
In this talk I will introduce the field of quantum networks and discuss the
current status and challenges. I will discuss our latest work on the
realization of a multi-node network in the lab including first protocols
and teleportation [3,4], on increasing the distance between nodes to
metropolitan scales , on development of next-generation devices with
improved quantum spin-photon interfaces, and on the development of a
quantum network control stack .
 For a popular account of these experiments, see e.g. Ronald Hanson and
Krister Shalm, Scientific American 319, 58-65 (2018).
 Quantum internet: A vision for the road ahead, S Wehner, D Elkouss, R
Hanson, Science 362 (6412), eaam9288 (2018).
 Realization of a multi-node quantum network of remote solid-state
qubits, M. Pompili, S.L.N. Hermans, S. Baier et al., Science 372, 259-264
 Qubit teleportation between non-neighboring nodes in a quantum network,
S.L.N. Hermans, M. Pompili et al., to appear in Nature, arXiv:2110.11373
 Telecom-band quantum interference of frequency-converted photons from
remote detuned NV centers, A. Stolk, K.L. van der Enden et al.,
 Experimental demonstration of entanglement delivery using a quantum
network stack, M. Pompili, C. Delle Donne et al., arXiv:2111.11332 (2021).
Drinks afterwards at the Eulerzaal, CWI.