Deterministically Charged Quantum Dots in Photonic Crystal
  Nanoresonators for Efficient Spin-Photon Interfaces

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Abstract

We demonstrate a novel method for deterministic charging of InAs quantum dots embedded in photonic crystal nanoresonators using a unique vertical p-n-i-n junction within the photonic crystal membrane. Charging is confirmed by the observation of Zeeman splitting for magnetic fields applied in the Voigt configuration. Spectrally resolved photoluminescence measurements are complemented by polarization resolved studies that show the precise structure of the Zeeman quadruplet. Integration of quantum dots in nanoresonators strongly enhances far-field collection efficiency and paves the way for the exploitation of enhanced spin-photon interactions for fabrication of efficient quantum nodes in a scalable solid state platform.

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Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box

J Majer, L Frunzio, R. Huang … (2004)

Under appropriate conditions, superconducting electronic circuits behave quantum mechanically, with properties that can be designed and controlled at will. We have realized an experiment in which a superconducting two-level system, playing the role of an artificial atom, is strongly coupled to a single photon stored in an on-chip cavity. We show that the atom-photon coupling in this circuit can be made strong enough for coherent effects to dominate over dissipation, even in a solid state environment. This new regime of matter light interaction in a circuit can be exploited for quantum information processing and quantum communication. It may also lead to new approaches for single photon generation and detection.

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Quantum register based on individual electronic and nuclear spin qubits in diamond.

M. V. Gurudev Dutt, L. Childress, L Jiang … (2007)

The key challenge in experimental quantum information science is to identify isolated quantum mechanical systems with long coherence times that can be manipulated and coupled together in a scalable fashion. We describe the coherent manipulation of an individual electron spin and nearby individual nuclear spins to create a controllable quantum register. Using optical and microwave radiation to control an electron spin associated with the nitrogen vacancy (NV) color center in diamond, we demonstrated robust initialization of electron and nuclear spin quantum bits (qubits) and transfer of arbitrary quantum states between them at room temperature. Moreover, nuclear spin qubits could be well isolated from the electron spin, even during optical polarization and measurement of the electronic state. Finally, coherent interactions between individual nuclear spin qubits were observed and their excellent coherence properties were demonstrated. These registers can be used as a basis for scalable, optically coupled quantum information systems.

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Quantum entanglement between an optical photon and a solid-state spin qubit.

E Togan, Y. Chu, A. S. Trifonov … (2010)

Quantum entanglement is among the most fascinating aspects of quantum theory. Entangled optical photons are now widely used for fundamental tests of quantum mechanics and applications such as quantum cryptography. Several recent experiments demonstrated entanglement of optical photons with trapped ions, atoms and atomic ensembles, which are then used to connect remote long-term memory nodes in distributed quantum networks. Here we realize quantum entanglement between the polarization of a single optical photon and a solid-state qubit associated with the single electronic spin of a nitrogen vacancy centre in diamond. Our experimental entanglement verification uses the quantum eraser technique, and demonstrates that a high degree of control over interactions between a solid-state qubit and the quantum light field can be achieved. The reported entanglement source can be used in studies of fundamental quantum phenomena and provides a key building block for the solid-state realization of quantum optical networks.

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Publication date Created: 20 August 2013

Publication date Updated: 2013-11-11

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DOI: 10.1088/1367-2630/15/11/113056

ArXiV ID: 1308.4463

SO-VID: 3ccbb9ee-fa22-4fe7-9735-7b73e6edc9c1

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http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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Journal reference New J. Phys. 15, 113056 (2013)

Categories cond-mat.mes-hall

ScienceOpen disciplines: Nanophysics

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ScienceOpen disciplines: Nanophysics

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Deterministically Charged Quantum Dots in Photonic Crystal Nanoresonators for Efficient Spin-Photon Interfaces

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RWTH Aachen Physics Collection

Most cited references 6

Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box

Quantum register based on individual electronic and nuclear spin qubits in diamond.

Quantum entanglement between an optical photon and a solid-state spin qubit.

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Cited by 3

Most referenced authors 76