Coupled quantum electrodynamics in photonic crystal cavities towards controlled phase gate operations
نویسندگان
چکیده
In this paper, a scalable photonic crystal cavity array, in which single embedded quantum dots (QDs) are coherently interacting, is studied theoretically. Firstly, we examine the spectral character and optical delay brought about by the coupled cavities interacting with single QDs, in an optical analogue to electromagnetically induced transparency. Secondly, we then examine the usability of this coupled QD–cavity system for quantum phase gate operation and our numerical examples suggest that a two-qubit system with fidelity above 0.99 and photon loss below 0.04 is possible. 3 Authors to whom any correspondence should be addressed. New Journal of Physics 10 (2008) 123013 1367-2630/08/123013+13$30.00 © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
منابع مشابه
Nanodot-cavity electrodynamics and photon entanglement.
Quantum electrodynamics of excitons in a cavity is shown to be relevant to quantum operations. We present a theory of an integrable solid-state quantum controlled-phase gate for generating entanglement of two photons using a coupled nanodot-microcavity-fiber structure. A conditional phase shift of O(pi/10) is calculated to be the consequence of the giant optical nonlinearity keyed by the excito...
متن کاملCavity quantum electrodynamics with a single quantum dot coupled to a photonic molecule
We demonstrate the effects of cavity quantum electrodynamics for a quantum dot coupled to a photonic molecule consisting of a pair of coupled photonic crystal cavities. We show anticrossing between the quantum dot and the two supermodes of the photonic molecule, signifying achievement of the strong coupling regime. From the anticrossing data, we estimate the contributions of both mode-coupling ...
متن کاملTowards a cavity electromagnetically induced transparency based quantum gate EDEN
Submitted for the DAMOP14 Meeting of The American Physical Society Towards a cavity electromagnetically induced transparency based quantum gate EDEN FIGUEROA, ZAKARY BURKLEY, BERTUS JORDAAN, CARL CHEUNG, CHRISTIAN NOELLEKE, CONNOR KUPCHAK, Stony Brook University — The processing of quantum information with photons and atoms has been established as one of the strongest candidates for future quan...
متن کاملOptical manipulation of quantum dot excitons strongly coupled to photonic crystal cavities
In this paper, we review some recent cavity quantum electrodynamic (CQED) experiments with single quantum dot exciton coupled to photonic crystal cavities, performed in our group. We show how the coupled quantumdot/cavity system can be used to modulate light with at a very fundamental level with very low power and discuss some applications of these low power modulators.
متن کاملImplementation scheme for quantum controlled phase-flip gate through quantum dot in slow-light photonic crystal waveguide
We propose a scheme to realize controlled phase gate between two single photons through a single quantum dot in a slow-light photonic crystal waveguide. Enhanced Purcell factor and large -factor lead to high gate fidelity over broadband frequencies compared to cavity-assisted system. The excellent physical integration of this photonic crystal waveguide system provides tremendous potential for l...
متن کامل