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Grotz, Bernhard; Hauf, Moritz V.; Dankerl, Markus; Naydenov, Boris; Pezzagna, Sébastien; Meijer, Jan; Jelezko, Fedor; Wrachtrup, Jörg; Stutzmann, Martin; Reinhard, Friedemann; Garrido, Jose A. |
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Title |
Charge state manipulation of qubits in diamond |
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2012 |
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Nature Communications |
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Nat. Comm. |
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3 |
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729 |
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6 |
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fromIPMRAS |
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The nitrogen-vacancy (NV) centre in diamond is a promising candidate for a solid-state qubit. However, its charge state is known to be unstable, discharging from the qubit state NV- into the neutral state NV0 under various circumstances. Here we demonstrate that the charge state can be controlled by an electrolytic gate electrode. This way, single centres can be switched from an unknown non-fluorescent state into the neutral charge state NV0, and the population of an ensemble of centres can be shifted from NV0 to NV-. Numerical simulations confirm the manipulation of the charge state to be induced by the gate-controlled shift of the Fermi level at the diamond surface. This result opens the way to a dynamic control of transitions between charge states and to explore hitherto inaccessible states, such as NV+. |
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770 |
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Gao, Jie; McMillan, James F.; Wong, Chee Wei |
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Title |
Nanophotonics: Remote on-chip coupling |
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2012 |
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Nature Photonics |
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Nat. Photon. |
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6 |
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1 |
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7-8 |
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Scientists have demonstrated strongly coupled photon states between two distant high-Q photonic crystal cavities connected by a photonic crystal waveguide. Remote dynamic control over the coupled states could aid the development of delay lines, optical buffers and qubit operations in both classical and quantum information processing. |
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779 |
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Pile, David |
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Title |
How many bits can a photon carry |
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Journal Article |
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2012 |
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Nature Photonics |
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Nat. Photon. |
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6 |
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1 |
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14-15 |
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Quantum physics offers a way to enhance the amount of information a photon can carry, with potential applications in optical communication, lithography, metrology and imaging. |
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View from... OSA Frontiers in Optics 2011: How many bits can a photon carry? |
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RPLAB @ gujma @ |
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780 |
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Santori, Charles; Beausoleil, Raymond G. |
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Quantum memory: Phonons in diamond crystals |
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2012 |
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Nature Photonics |
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Nat. Photon. |
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6 |
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10-12 |
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The demonstration that quantum information can be stored in a bulk-diamond crystal in the form of an optically excited phonon gives researchers a new type of mechanical solid-state quantum memory to explore. |
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RPLAB @ gujma @ |
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781 |
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Author |
Xu, XinAn; Wong, Chee Wei |
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Title |
Quantum optics: Correlations on a chip |
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Journal Article |
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2012 |
Publication |
Nature Photonics |
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Nat. Photon. |
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6 |
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75-76 |
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Researchers have developed a semiconductor structure capable of supporting quantum correlations between photons and strong single-photon nonlinearities, thus paving the way for the development of chip-based devices for quantum secure communications and quantum information processing. |
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RPLAB @ gujma @ |
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782 |
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