Výsledky vyhledávání - "Hodges, Jonathan S."

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Time-keeping with electron spin states in diamond

Autor: Hodges, Jonathan S., Englund, Dirk

Frequency standards based on atomic states, such as Rb or Cs vapors, or single trapped ions, are the most precise measures of time. Here we introduce a complementary device based on spins in a solid-state system - the nitrogen-vacancy defect in singl

Externí odkaz: http://arxiv.org/abs/1109.3241

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The diamond Nitrogen-Vacancy center as a probe of random fluctuations in a nuclear spin ensemble

Autor: Laraoui, Abdelghani, Hodges, Jonathan S., Ryan, Colm, Meriles, Carlos A.

Publikováno v: Phys. Rev. B 84, 104301 (2011)

New schemes that exploit the unique properties of Nitrogen-Vacancy (NV) centers in diamond are presently being explored as a platform for high-resolution magnetic sensing. Here we focus on the ability of a NV center to monitor an adjacent mesoscopic

Externí odkaz: http://arxiv.org/abs/1104.2546

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Single Color Centers Implanted in Diamond Nanostructures

Autor: Hausmann, Birgit J. M., Babinec, Thomas M., Choy, Jennifer T., Hodges, Jonathan S., Hong, Sungkun, Bulu, Irfan, Yacoby, A., Lukin, M. D., Lončar, Marko

The development of materials processing techniques for optical diamond nanostructures containing a single color center is an important problem in quantum science and technology. In this work, we present the combination of ion implantation and top-dow

Externí odkaz: http://arxiv.org/abs/1009.4224

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Magnetometry of random AC magnetic fields using a single Nitrogen-Vacancy center

Autor: Laraoui, Abdelghani, Hodges, Jonathan S., Meriles, Carlos A.

We report on the use of a single NV center to probe fluctuating AC magnetic fields. Using engineered currents to induce random changes in the field amplitude and phase, we show that stochastic fluctuations reduce the NV center sensitivity and, in gen

Externí odkaz: http://arxiv.org/abs/1009.0316

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Universal Control of Nuclear Spins Via Anisotropic Hyperfine Interactions

Autor: Hodges, Jonathan S., Yang, Jamie C., Ramanathan, Chandrasekhar, Cory, David G.

We show that nuclear spin subsystems can be completely controlled via microwave irradiation of resolved anisotropic hyperfine interactions with a nearby electron spin. Such indirect addressing of the nuclear spins via coupling to an electron allows u

Externí odkaz: http://arxiv.org/abs/0707.2956

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Fidelity enhancement by logical qubit encoding

Autor: Henry, Michael K., Ramanathan, Chandrasekhar, Hodges, Jonathan S., Ryan, Colm A., Ditty, Michael J., Laflamme, Raymond, Cory, David G.

We demonstrate coherent control of two logical qubits encoded in a decoherence free subspace (DFS) of four dipolar-coupled protons in an NMR quantum information processor. A pseudo-pure fiducial state is created in the DFS, and a unitary logical qubi

Externí odkaz: http://arxiv.org/abs/0705.4119

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Signatures of incoherence in a quantum information processor

Autor: Henry, Michael K., Gorshkov, Alexey V., Weinstein, Yaakov S., Cappellaro, Paola, Emerson, Joseph, Boulant, Nicolas, Hodges, Jonathan S., Ramanathan, Chandrasekhar, Havel, Timothy F., Martinez, Rudy, Cory, David G.

Incoherent noise is manifest in measurements of expectation values when the underlying ensemble evolves under a classical distribution of unitary processes. While many incoherent processes appear decoherent, there are important differences. The distr

Externí odkaz: http://arxiv.org/abs/0705.3666

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