Multidimensional quantum entanglement with large-scale integrated optics

By Jianwei Wang, S. Paesani, Yunhong Ding, R. Santagati, Paul Skrzypczyk, A. Salavrakos, Jordi Tura i Brugués, Remigiusz Augusiak, L. Mančinska, Davide Bacco and 9 more. Science, 2018

806 citations recorded by the source corpus.

Large-scale integrated quantum optics The ability to pattern optical circuits on-chip, along with coupling in single and entangled photon sources, provides the basis for an integrated quantum optics platform. Wang et al. demonstrate how they can expand on that platform to fabricate very large quantum optical circuitry. They integrated more than 550 quantum optical components and 16 photon sources on a state-of-the-art single silicon chip, enabling universal generation, control, and analysis of multidimensional entanglement. The results illustrate the power of an integrated quantum optics approach for developing quantum technologies. Science, this issue p. 285 Large-scale integrated quantum optical circuitry is demonstrated on a single silicon chip. The ability to control multidimensional quantum systems is central to the development of advanced quantum technologies. We demonstrate a multidimensional integrated quantum photonic platform able to generate, control, and analyze high-dimensional entanglement. A programmable bipartite entangled system is realized with dimensions up to 15 × 15 on a large-scale silicon photonics quantum circuit. The device integrates more than 550 photonic components on a single chip, including 16 identical photon-pair sources. We verify the high precision, generality, and controllability of our multidimensional technology, and further exploit these abilities to demonstrate previously unexplored quantum applications, such as quantum randomness expansion and self-testing on multidimensional states. Our work provides an experimental platform for the development of multidimensional quantum technologies.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/0738f7bb687f83b7b746974c1527b1adf80f6c2a

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Citations in the corpus

Space-efficient optical computing with an integrated chip diffractive neural network (2022, background): “This reduction in the resource scaling from quadratic to linear will have a profound impact on the realization of large-scale silicon-photonics computing circuits with current fabrication technologies 38 – 40 .”
Integrated photonic quantum technologies (2019, methodology): “allows a stronger form of certified randomness, i.e., DI-QRNG. By violating the Bell inequalities for multidimensional entangled states in a Si-chip, randomness was certified in the fully DI scenario [44]. On-chip quantum information processing with photons In the gate-based quantum computing model,”
Orbital Angular Momentum States Enabling Fiber-based High-dimensional Quantum Communication (2018, background): “Conversely, projecting on N < D outcomes, only a subset of all emitted pairs are measured, introducing possible classical correlation [37,38].”
Chip-to-chip quantum teleportation and multi-photon entanglement in silicon (2019, methodology): “Moreover, silicon offers the unique capability of integrating electronics and photonics [37], promising large-scale integration of quantum circuits [13] and their efficient quantum control.”
High‐Dimensional Quantum Communication: Benefits, Progress, and Future Challenges (2019, methodology): “ting entangled photon pairs up to dimension d = 15, as we are going to see in the next subsection [129].”
Versatile Polarization Generation and Manipulation Using Dielectric Metasurfaces (2020, background): “Moreover, the spatial- and polarization-resolved meta-polarizer could emerge as an essential component for quantum nanophotonics when interacting with nonclassical optical fields at the single-photon level (23-25).”