Journal article

Adiabatic two-photon quantum gate operations using a long-range photonic bus

Anthony P Hope, Thach G Nguyen, Arnan Mitchell, Andrew D Greentree

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | IOP PUBLISHING LTD | Published : 2015

Abstract

Adiabatic techniques have much potential to realize practical and robust optical waveguide devices. Traditionally, photonic elements are limited to coupling schemes that rely on proximity to nearest neighbour elements. We combine adiabatic passage with a continuum based long-range optical bus to break free from such topological restraints and thereby outline a new approach to photonic quantum gate design. We explicitly show designs for adiabatic quantum gates that produce a Hadamard, 50:50 and 1/3:2/3 beam splitter, and non-deterministic controlled NOT gate based on planar thin, shallow ridge waveguides. Our calculations are performed under conditions of one and two-photon inputs.

University of Melbourne Researchers

Grants

Awarded by Australian Research Council (ARC) Centre of Excellence Funding


Awarded by ARC APD fellowship


Awarded by ARC


Funding Acknowledgements

Anthony Hope, Thach Nguyen and Arnan Mitchell acknowledge the support of the Australian Research Council (ARC) Centre of Excellence Funding (CE110001018), Anthony Hope acknowledges Robert and Josephine Shanks Scholarship, Thach Nguyen acknowledges support from the ARC APD fellowship (DP1096153), Andrew Greentree acknowledges the ARC for financial support (DP130104381) and useful conversations with Andon Rangelov and Alberto Peruzzo.