I care about #BosonSampling, this is why I need a) indistinguishable pairs of photons and b) a network of tunable beamsplitters (aka Mach–Zehnder interferometers).
One key method to produce these photon pairs, is through spontaneous parametric down-conversion (SPDC) in nonlinear crystals.
One key method to get a network of tunable beamsplitters is to team up with a company that makes just that (may I introduce #QuiXquantum https://www.quixquantum.com/).

Quantum Photonic Processor is set up and ready to go.

Exciting times lie ahead for us at the quantum photonics group of Lehrstuhl für Lasertechnik (LLT) at RWTH Aachen University / Fraunhofer ILT.

#Quantum #QuantumComputing #QuantumPhotonicProcessor #QuantumPhotonics #BosonSampling #QuantumInternet #ScienceCommunication

A new paper from my research group at #INL on #BosonSampling!!

New #QLOC_INL publication! Joint work by my supervisor Ernesto Galvão with Fabio Sciarrino, Nicolò Spagnolo (Rome) and Daniel Brod (UFF).

https://www.nature.com/articles/s41534-023-00676-x

Here they explore how to simulate non-linear photonic gates using linear optics, as a way to gauge the associated complexity. In particular, they look at simulations of non-linear phase gates, and how the complexity is affected by the density of photons in the device.

#BosonSampling is a problem that has hardness of classical simulation well established, but that quantum systems can do absurdly fast

One major difficulty is that this sampling task is not easy to be verified, hence not clear how to benchmark #QuantumAdvantage BosonSampling experiments

In a new preprint from #QLOC_INL Leonardo Novo, together with Benoît Seron (main author), A Arkhipov and N Cerf advance the field of Boson Sampling validation!
https://scirate.com/arxiv/2212.09643

Congrats to Benoît et al!