Manipulation of multiphoton entanglement in waveguide quantum circuits

By Jonathan C. F. Matthews, Alberto Politi, A. Stefanov, Jeremy Lloyd O'Brien. 2009

390 citations recorded by the source corpus.

Precise control of single-photon states and multiphoton entanglement is demonstrated on-chip. Two- and four-photon entangled states have now been generated in a waveguide circuit and their interference tuned. These results open up adaptive and reconfigurable photonic quantum circuits not just for single photons, but for all quantum states of light.

Subfields: Artificial Intelligence

View Paper: https://www.semanticscholar.org/paper/8fb697e46697bb9481e5f62022ddbca457403e54

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In Artificial Intelligence

Citations in the corpus

Experimental demonstration of a heralded entanglement source (2010, background): “Moreover, it can be used in on-chip waveguide quantum circuit applications, which have promise in new technologies in quantum optic”
On-chip quantum interference between silicon photon-pair sources (2013, background): “Finally, the bright-light and biphoton states were interfered on a second MMI (IV ) to yield Mach-Zehnder interference fringes in the bright pump transmission, and half-period (λ2 -like) fringes[21] in the photon pair statistics, of the form”
Photonic quantum technologies (2009, methodology): “Integration of controlled phase shifters in integrated interferometers has been used to control single-photon qubit states, manipulate multiphoton entangled states of up to four photons and demonstrate on-chip quantum metrolog”
Quantum computers (2010, neutral): “Today, efforts are focused on high-efficiency single-photon detectors 16,17 and sources 18,19 , devices that would enable a deterministic interaction between photons 11,12 , and chip-scale waveguide quantum circuits 14,20 .”
Near-deterministic quantum teleportation and resource-efficient quantum computation using linear optics and hybrid qubits (2011, background): “Finally, as optical hybrid qubits are interconvertible with photon or coherent-state qubits by inline operations, one can construct hybrid architectures by integrating some devices developed in various approaches, such as quantum memories [26, 27] and photonic chips [28, 29].”
Entanglement certification from theory to experiment (2018, background): “While such circuits have been used extensively for quantum information processing with qubits [161, 162], their first implementation for qutrit entanglement was demonstrated only recently, with integrated multiport devices enabling the realisation of any desired local unitary transformation in a two”