Coupling nanocrystals to a high-$Q$ silica microsphere: entanglement in quantum dots via photon exchange

Details Coupling nanocrystals to a high-$Q$ silica microsphere: entanglement in quantum dots via photon exchange Coupling nanocrystals to a high-$Q$ silica microsphere: entanglement in quantum dots via photon exchange

1999-06-08

arxiv.org/abs/quant-ph/9906025v1

Phys.Rev.A61:032307,2000

Physics

Quantum Physics

5 pages RevTeX 3.0 + 3 figures (encapsulated postscript). Submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevA.61.032307

Coupling nanocrystals (quantum dots) to a high-$Q$ whispering gallery mode (WGM) of a silica microsphere, can produce a strong coherent interaction between the WGM and the electronic states of the dots. Shifting the resonance frequencies of the dots, for instance by placing the entire system in an electric potential, then allows this interaction to be controlled, permitting entangling interactions between different dots. Thus, this system could potentially be used to implement a quantum computer.

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