Integrated Photonic Quantum Technologies
arXiv:2005.01948 · doi:10.1038/s41566-019-0532-1
Abstract
Generations of technologies with fundamentally new information processing capabilities will emerge if microscopic physical systems can be controlled to encode, transmit, and process quantum information, at scale and with high fidelity. In the decade after its 2008 inception, the technology of integrated quantum photonics enabled the generation, processing, and detection of quantum states of light, at a steadily increasing scale and level of complexity. Using both established and advanced fabrication techniques, the field progressed from the demonstrations of fixed circuits comprising few components and operating on two photons, to programmable circuitry approaching 1000 components with integrated generation of multi-photon states. A continuation in this trend over the next decade would usher in a versatile platform for future quantum technologies. This Review summarises the advances in integrated photonic quantum technologies (materials, devices, and functionality), and its demonstrated on-chip applications including secure quantum communications, simulations of quantum physical and chemical systems, Boson sampling, and linear-optic quantum information processing.
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- Physical interpretation of nonlocal quantum correlation through local description of subsystems
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- Advancements in Entangled Photon Pairs in 2D Van der Waals Materials for On-chip Quantum Applications
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- Tailoring quantum walks in integrated photonic lattices
- Nonlinear-linear duality for multipath quantum interference
- Demonstration of sequential processors with quantum advantage and analysis of classical performance limits
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- Configurable photonic simulator for quantum field dynamics
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