Quantum lithography, entanglement and Heisenberg-limited parameter estimation

Pieter Kok, Samuel L. Braunstein, and Jonathan P. Dowling

Journal of Optics B 6, S811-S815 (2004)

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We explore the intimate relationship between quantum lithography, Heisenberg-limited parameter estimation and the rate of dynamical evolution of quantum states. We show how both the enhanced accuracy in measurements and the increased resolution in quantum lithography follow from the use of entanglement. Mathematically, the hyperresolution of quantum lithography appears naturally in the derivation of Heisenberg-limited parameter estimation. We also review recent experiments offering a proof of principle of quantum lithography, and we address the question of state preparation and the fabrication of suitable photoresists.

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