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Optimal Quantum Metrology of Distant Black Bodies
Mark E. Pearce, Earl T. Campbell, Pieter Kok
Measurements of an object's temperature are important in many disciplines, from astronomy to engineering, as are estimates of an object's spatial configuration. We present the quan…
Modal decomposition of a propagating matter wave via electron ptychography
S. Cao, P. Kok, P. Li +2
We employ ptychography, a phase-retrieval imaging technique, to show experimentally for the first time that a partially coherent high-energy matter (electron) wave emanating from a…
Quantum metrology of spatial deformation using arrays of classical and quantum light emitters
Jasminder S. Sidhu, Pieter Kok
We introduce spatial deformations to an array of light sources and study how the estimation precision of the interspacing distance, d, changes with the sources of light used. The q…
The effect of component variations on the gate fidelity in linear optical networks
Jonathan Crickmore, Jonathan Frazer, Scott Shaw +1
We investigate the effect of variations in beam splitter transmissions and path length differences in the nonlinear sign gate that is used for linear optical quantum computing. We…
Practical repeaters for ultra-long distance quantum communication
Scott E. Vinay, Pieter Kok
Quantum communication is at the forefront of quantum technology, enabling the development of absolutely secure encryption, distributed quantum computing, teleportation and more. Wh…
Photonic Quantum Information Processing
Pieter Kok
Information processing with light is ubiquitous, from communication, metrology and imaging to computing. When we consider light as a quantum mechanical object, new ways of informat…