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of 234
pro vyhledávání: '"Steane, A. M."'
Autor:
Steane, Andrew M.
Publikováno v:
Phys.Lett.A 496 (2024) 129306
When gas molecules collide, they accelerate, and therefore encounter the Fulling-Davies-Unruh and Moore-DeWitt effects. The size of these effects is sufficient to randomize the motion of the gas molecules after about 1 nanosecond at standard temperat
Externí odkaz:
http://arxiv.org/abs/2312.12048
Autor:
Steane, A. M.
Publikováno v:
Phys.Rev.D 109 (2024) 6, 063032
We study the gravitational bremsstrahlung owing to collisions mediated by a $1/r$ potential. We combine classical and first order Born approximation results in order to construct an approximate gravitational `Gaunt factor' for the total emitted energ
Externí odkaz:
http://arxiv.org/abs/2309.06972
Autor:
Sepiol, M. A., Hughes, A. C., Tarlton, J. E., Nadlinger, D. P., Ballance, T. G., Ballance, C. J., Harty, T. P., Steane, A. M., Goodwin, J. F., Lucas, D. M.
Publikováno v:
Phys. Rev. Lett. 123, 110503 (2019)
Robust qubit memory is essential for quantum computing, both for near-term devices operating without error correction, and for the long-term goal of a fault-tolerant processor. We directly measure the memory error $\epsilon_m$ for a $^{43}$Ca$^+$ tra
Externí odkaz:
http://arxiv.org/abs/1905.06878
Autor:
Steane, Andrew M.
Many degree sequences can only be realised in graphs that contain a `ds-completable card', defined as a vertex-deleted subgraph in which the erstwhile neighbours of the deleted vertex can be identified from their degrees, if one knows the degree sequ
Externí odkaz:
http://arxiv.org/abs/1810.02602
Autor:
Steane, Andrew M.
Publikováno v:
Phys. Lett. A 381, 3905-3908 (2017)
We study matter-wave interferometry in the presence of a stochastic background of gravitational waves. It is shown that if the background has a scale-invariant spectrum over a wide bandwidth (which is expected in a class of inflationary models of Big
Externí odkaz:
http://arxiv.org/abs/1710.05816
Autor:
Schäfer, V. M., Ballance, C. J., Thirumalai, K., Stephenson, L. J., Ballance, T. G., Steane, A. M., Lucas, D. M.
Publikováno v:
Nature 555, 75-78 (2018)
Quantum bits based on individual trapped atomic ions constitute a promising technology for building a quantum computer, with all the elementary operations having been achieved with the necessary precision for some error-correction schemes. However, t
Externí odkaz:
http://arxiv.org/abs/1709.06952
Publikováno v:
Journal of Modern Optics, 65:5-6, 577-584 (2018)
We describe a simple approach to the problem of incorporating the response time of an atom or ion being Doppler-cooled into the theory of the cooling process. The system being cooled does not in general respond instantly to the changing laser frequen
Externí odkaz:
http://arxiv.org/abs/1706.04423
Akademický článek
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Publikováno v:
Phys. Rev. A 95, 032112 (2017)
Continuous spontaneous localisation (CSL) is a model that captures the effects of a class of extensions to quantum theory which are expected to result from quantum gravity, and is such that wavefunction collapse is a physical process. The rate of suc
Externí odkaz:
http://arxiv.org/abs/1605.01881