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pro vyhledávání: '"Sutherland, R. T."'
In recent demonstrations of the quantum charge-coupled device (QCCD) computer architecture, circuit times are dominated by cooling. Some motional modes of multi-ion crystals take orders-of-magnitude longer to cool than others because of low coolant i
Externí odkaz:
http://arxiv.org/abs/2403.02315
Autor:
Băzăvan, O., Saner, S., Minder, M., Hughes, A. C., Sutherland, R. T., Lucas, D. M., Srinivas, R., Ballance, C. J.
A single bichromatic field near-resonant to a qubit transition is typically used for $\hat{\sigma}_x$ or $\hat{\sigma}_y$ M{\o}lmer-S{\o}rensen type interactions in trapped ion systems. Using this field configuration, it is also possible to synthesiz
Externí odkaz:
http://arxiv.org/abs/2207.11193
Publikováno v:
Phys. Rev. A 107, 032604 (2023)
We propose a new scheme for individual addressing of trapped ion qubits, selecting them via their motional frequency. We show that geometric phase gates can perform single-qubit rotations using the coherent interference of spin-independent and (globa
Externí odkaz:
http://arxiv.org/abs/2206.06546
Autor:
Ferioli, G., Glicenstein, A., Robicheaux, F., Sutherland, R. T., Browaeys, A., Ferrier-Barbut, I.
We report the experimental observation of superradiant emission emanating from an elongated dense ensemble of laser cooled two-level atoms, with a radial extent smaller than the transition wavelength. In the presence of a strong driving laser, we obs
Externí odkaz:
http://arxiv.org/abs/2107.13392
Autor:
Sutherland, R. T., Srinivas, R.
Publikováno v:
Phys. Rev. A 104, 032609 (2021)
Using discrete and continuous variable subsystems, hybrid approaches to quantum information could enable more quantum computational power for the same physical resources. Here, we propose a hybrid scheme that can be used to generate the necessary Gau
Externí odkaz:
http://arxiv.org/abs/2105.05768
Publikováno v:
Phys. Rev. Lett. 127, 083201 (2021)
Transport, separation, and merging of trapped ion crystals are essential operations for most large-scale quantum computing architectures. In this work, we develop a theoretical framework that describes the dynamics of ions in time-varying potentials
Externí odkaz:
http://arxiv.org/abs/2103.05832
Autor:
Srinivas, R., Burd, S. C., Knaack, H. M., Sutherland, R. T., Kwiatkowski, A., Glancy, S., Knill, E., Wineland, D. J., Leibfried, D., Wilson, A. C., Allcock, D. T. C., Slichter, D. H.
Publikováno v:
Nature 597, 209-213 (2021)
Universal control of multiple qubits -- the ability to entangle qubits and to perform arbitrary individual qubit operations -- is a fundamental resource for quantum computation, simulation, and networking. Here, we implement a new laser-free scheme f
Externí odkaz:
http://arxiv.org/abs/2102.12533
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Autor:
Sutherland, R. T., Srinivas, R., Burd, S. C., Knaack, H. M., Wilson, A. C., Wineland, D. J., Leibfried, D., Allcock, D. T. C., Slichter, D. H., Libby, S. B.
Publikováno v:
Phys. Rev. A 101, 042334 (2020)
The dominant error sources for state-of-the-art laser-free trapped-ion entangling gates are decoherence of the qubit state and the ion motion. The effect of these decoherence mechanisms can be suppressed with additional control fields, or with techni
Externí odkaz:
http://arxiv.org/abs/1910.14178
Autor:
Sutherland, R. T.
Publikováno v:
Phys. Rev. A 100, 061405 (2019)
We discuss a protocol for the analogue quantum simulation of superradiance and subradiance using a linear chain of N trapped qubit ions with a single sympathetic cooling ion. We develop a simple analytic model that shows the dynamics of the qubit sub
Externí odkaz:
http://arxiv.org/abs/1909.12420