Spin-flip and spin-conserving optical transitions of the nitrogen-vacancy centre in diamond
Ph. Tamarat,Neil B. Manson,Joanne Harrison,Roger McMurtrie,A. P. Nizovtsev,Charles Santori,Raymond G. Beausoleil,Philipp Neumann,Torsten Gaebel,Fedor Jelezko,Philip R. Hemmer,Jörg Wrachtrup +11 more
TLDR
In this paper, the first excited state sublevel structure of single nitrogen-vacancy (NV) color centres in diamond was shown to be an orbital doublet, where one branch supports an efficient cycling transition, while the other can simultaneously support fully allowed optical Raman spin-flip transitions.Abstract:
We map out the first excited state sublevel structure of single nitrogen-vacancy (NV) colour centres in diamond. The excited state is an orbital doublet where one branch supports an efficient cycling transition, while the other can simultaneously support fully allowed optical Raman spin-flip transitions. This is crucial for the success of many recently proposed quantum information applications of the NV defects. We further find that an external electric field can be used to completely control the optical properties of a single centre. Finally, a group theoretical model is developed that explains the observations and provides good physical understanding of the excited state structure.read more
Citations
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The nitrogen-vacancy colour centre in diamond
Marcus W. Doherty,Marcus W. Doherty,Neil B. Manson,Paul Delaney,Paul Delaney,Fedor Jelezko,Joerg Wrachtrup,Lloyd C. L. Hollenberg +7 more
TL;DR: The nitrogen-vacancy (NV) colour centre in diamond is an important physical system for emergent quantum technologies, including quantum metrology, information processing and communications, as well as for various nanotechnologies such as biological and sub-diffraction limit imaging, and for tests of entanglement in quantum mechanics as mentioned in this paper.
Journal ArticleDOI
The nitrogen-vacancy colour centre in diamond
Marcus W. Doherty,Marcus W. Doherty,Neil B. Manson,Paul Delaney,Paul Delaney,Fedor Jelezko,Joerg Wrachtrup,Lloyd C. L. Hollenberg +7 more
TL;DR: The nitrogen-vacancy (NV) colour centre in diamond is an important physical system for emergent quantum technologies, including quantum metrology, information processing and communications, as well as for various nanotechnologies such as biological and sub-diffraction limit imaging, and for tests of entanglement in quantum mechanics as mentioned in this paper.
Journal ArticleDOI
Quantum entanglement between an optical photon and a solid-state spin qubit
Emre Togan,Yiwen Chu,Alexei Trifonov,Liang Jiang,Liang Jiang,Jeronimo R. Maze,Lilian Childress,Lilian Childress,M. V. G. Dutt,M. V. G. Dutt,Anders S. Sørensen,Philip R. Hemmer,Alexander S. Zibrov,Mikhail D. Lukin +13 more
TL;DR: In this paper, the 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 is verified using 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.
Journal ArticleDOI
High-fidelity projective read-out of a solid-state spin quantum register
TL;DR: The preparation and measurement of a multi-spin quantum register in a low-temperature solid-state system is demonstrated by implementing resonant optical excitation techniques originally developed in atomic physics, and compatibility with qubit control is shown.
References
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Journal ArticleDOI
Scanning confocal optical microscopy and magnetic resonance on single defect centers
TL;DR: In this article, the fluorescence of individual nitrogen-vacancy defect centers in diamond was observed with room-temperature scanning confocal optical microscopy, and the centers were photostable, showing no detectable change in their fluorescence emission spectrum as a function of time.
Journal ArticleDOI
Coherent dynamics of coupled electron and nuclear spin qubits in diamond.
Lilian Childress,Lilian Childress,M. V. Gurudev Dutt,M. V. Gurudev Dutt,Jacob M. Taylor,Jacob M. Taylor,Alexander S. Zibrov,Alexander S. Zibrov,Fedor Jelezko,Fedor Jelezko,J. Wrachtrup,J. Wrachtrup,Philip R. Hemmer,Philip R. Hemmer,Mikhail D. Lukin,Mikhail D. Lukin +15 more
TL;DR: Coherent manipulation of an individual electron spin associated with a nitrogen-vacancy center in diamond was used to gain insight into its local environment, which shows that this environment is effectively separated into a set of individual proximal 13Cnuclear spins, which are coupled coherently to the electron spin, and the remainder of the 13C nuclear spins, who cause the loss of coherence.
Journal ArticleDOI
Quantum Register Based on Individual Electronic and Nuclear Spin Qubits in Diamond
M. V. Gurudev Dutt,M. V. Gurudev Dutt,Lilian Childress,Lilian Childress,Liang Jiang,Liang Jiang,Emre Togan,Emre Togan,Jeronimo R. Maze,Jeronimo R. Maze,Fedor Jelezko,Fedor Jelezko,Alexander S. Zibrov,Alexander S. Zibrov,Philip R. Hemmer,Philip R. Hemmer,Mikhail D. Lukin,Mikhail D. Lukin +17 more
TL;DR: Using optical and microwave radiation to control an electron spin associated with the nitrogen vacancy color center in diamond, robust initialization of electron and nuclear spin quantum bits (qubits) and transfer of arbitrary quantum states between them at room temperature are demonstrated.
Journal Article
Quantum register based on individual electronic and nuclear spin qubits in diamond
Journal ArticleDOI
Observation of coherent oscillation of a single nuclear spin and realization of a two-qubit conditional quantum gate.
TL;DR: Density matrix tomography of the CROT gate shows that the gate fidelity achieved in the experiments is up to 0.9, good enough to be used in quantum algorithms.