The Experts below are selected from a list of 132441 Experts worldwide ranked by ideXlab platform
Richard J. Warburton - One of the best experts on this subject based on the ideXlab platform.
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Optical detection of single-electron Spin Resonance in a quantum dot
Physical review letters, 2008Co-Authors: Martin Kroner, Kathrina M. Weiss, Benjamin R. Biedermann, Stefan Seidl, S. Manus, Alexander W. Holleitner, Antonio Badolato, Pierre Petroff, Brian D. Gerardot, Richard J. WarburtonAbstract:We demonstrate optically detected Spin Resonance of a single electron confined to a self-assembled quantum dot. The dot is rendered dark by resonant optical pumping of the Spin with a laser. Contrast is restored by applying a radio frequency (rf) magnetic field at the Spin Resonance. The scheme is sensitive even to rf fields of just a few microT. In one case, the Spin Resonance behaves as a driven 3-level lambda system with weak damping; in another one, the dot exhibits remarkably strong (67% signal recovery) and narrow (0.34 MHz) Spin Resonances with fluctuating resonant positions, evidence of unusual dynamic processes.
Akito Noiri - One of the best experts on this subject based on the ideXlab platform.
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Single-electron Spin Resonance in a Quadruple Quantum Dot
Scientific Reports, 2016Co-Authors: Tomohiro Otsuka, Takashi Nakajima, Matthieu R. Delbecq, Shinichi Amaha, Jun Yoneda, Kenta Takeda, G. Allison, Takumi Ito, Retsu Sugawara, Akito NoiriAbstract:Electron Spins in semiconductor quantum dots are good candidates of quantum bits for quantum information processing. Basic operations of the qubit have been realized in recent years: initialization, manipulation of single Spins, two qubit entanglement operations, and readout. Now it becomes crucial to demonstrate scalability of this architecture by conducting Spin operations on a scaled up system. Here, we demonstrate single-electron Spin Resonance in a quadruple quantum dot. A few-electron quadruple quantum dot is formed within a magnetic field gradient created by a micro-magnet. We oscillate the wave functions of the electrons in the quantum dots by applying microwave voltages and this induces electron Spin Resonance. The Resonance energies of the four quantum dots are slightly different because of the stray field created by the micro-magnet and therefore frequency-resolved addressable control of each electron Spin Resonance is possible.
Martin Kroner - One of the best experts on this subject based on the ideXlab platform.
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Optical detection of single-electron Spin Resonance in a quantum dot
Physical review letters, 2008Co-Authors: Martin Kroner, Kathrina M. Weiss, Benjamin R. Biedermann, Stefan Seidl, S. Manus, Alexander W. Holleitner, Antonio Badolato, Pierre Petroff, Brian D. Gerardot, Richard J. WarburtonAbstract:We demonstrate optically detected Spin Resonance of a single electron confined to a self-assembled quantum dot. The dot is rendered dark by resonant optical pumping of the Spin with a laser. Contrast is restored by applying a radio frequency (rf) magnetic field at the Spin Resonance. The scheme is sensitive even to rf fields of just a few microT. In one case, the Spin Resonance behaves as a driven 3-level lambda system with weak damping; in another one, the dot exhibits remarkably strong (67% signal recovery) and narrow (0.34 MHz) Spin Resonances with fluctuating resonant positions, evidence of unusual dynamic processes.
Tomohiro Otsuka - One of the best experts on this subject based on the ideXlab platform.
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Single-electron Spin Resonance in a Quadruple Quantum Dot
Scientific Reports, 2016Co-Authors: Tomohiro Otsuka, Takashi Nakajima, Matthieu R. Delbecq, Shinichi Amaha, Jun Yoneda, Kenta Takeda, G. Allison, Takumi Ito, Retsu Sugawara, Akito NoiriAbstract:Electron Spins in semiconductor quantum dots are good candidates of quantum bits for quantum information processing. Basic operations of the qubit have been realized in recent years: initialization, manipulation of single Spins, two qubit entanglement operations, and readout. Now it becomes crucial to demonstrate scalability of this architecture by conducting Spin operations on a scaled up system. Here, we demonstrate single-electron Spin Resonance in a quadruple quantum dot. A few-electron quadruple quantum dot is formed within a magnetic field gradient created by a micro-magnet. We oscillate the wave functions of the electrons in the quantum dots by applying microwave voltages and this induces electron Spin Resonance. The Resonance energies of the four quantum dots are slightly different because of the stray field created by the micro-magnet and therefore frequency-resolved addressable control of each electron Spin Resonance is possible.
Benjamin R. Biedermann - One of the best experts on this subject based on the ideXlab platform.
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Optical detection of single-electron Spin Resonance in a quantum dot
Physical review letters, 2008Co-Authors: Martin Kroner, Kathrina M. Weiss, Benjamin R. Biedermann, Stefan Seidl, S. Manus, Alexander W. Holleitner, Antonio Badolato, Pierre Petroff, Brian D. Gerardot, Richard J. WarburtonAbstract:We demonstrate optically detected Spin Resonance of a single electron confined to a self-assembled quantum dot. The dot is rendered dark by resonant optical pumping of the Spin with a laser. Contrast is restored by applying a radio frequency (rf) magnetic field at the Spin Resonance. The scheme is sensitive even to rf fields of just a few microT. In one case, the Spin Resonance behaves as a driven 3-level lambda system with weak damping; in another one, the dot exhibits remarkably strong (67% signal recovery) and narrow (0.34 MHz) Spin Resonances with fluctuating resonant positions, evidence of unusual dynamic processes.