Zobrazeno 1 - 10
of 364
pro vyhledávání: '"Everitt M"'
Publikováno v:
Ann. Phys. (NY) 458 (2023), 169459 (30pp)
We apply the generalized Wigner function formalism to detect and characterize a range of quantum phase transitions in several cyclic, finite-length, spin-$\frac{1}{2}$ one-dimensional spin-chain models, viz., the Ising and anisotropic $XY$ models in
Externí odkaz:
http://arxiv.org/abs/2203.12320
In this work we construct Wigner functions for hybrid continuous and discrete variable quantum systems. We demonstrate new capabilities in the visualization of the interactions and correlations within hybrid quantum systems. Specifically, we show how
Externí odkaz:
http://arxiv.org/abs/1809.10564
Publikováno v:
Phys. Rev. A 100, 042102 (2019)
In this work we show how constructing Wigner functions of heterogeneous quantum systems leads to new capability in the visualization of quantum states of atoms and molecules. This method allows us to display quantum correlations (entanglement) betwee
Externí odkaz:
http://arxiv.org/abs/1809.05431
Publikováno v:
Phys. Rev. A 99, 012115 (2019)
Since the very early days of quantum theory there have been numerous attempts to interpret quantum mechanics as a statistical theory. This is equivalent to describing quantum states and ensembles together with their dynamics entirely in terms of phas
Externí odkaz:
http://arxiv.org/abs/1708.03814
Publikováno v:
Phys. Rev. B 96, 134520 (2017)
High fidelity models, which support accurate device characterization and correctly account for environmental effects, are crucial to the engineering of scalable quantum technologies. As it ensures positivity of the density matrix, one preferred model
Externí odkaz:
http://arxiv.org/abs/1707.00593
Due to the exponential growth of the state space of coupled quantum systems it is not possible, in general, to numerically store the state of a very large number of quantum systems within a classical computer. We demonstrate a method for modelling th
Externí odkaz:
http://arxiv.org/abs/1702.01723
Publikováno v:
Phys. Rev. A 96, 022117 (2017)
It has recently been shown that it is possible to represent the complete quantum state of any system as a phase-space quasi-probability distribution (Wigner function) [Phys Rev Lett 117, 180401]. Such functions take the form of expectation values of
Externí odkaz:
http://arxiv.org/abs/1605.08922
Autor:
Duffus, S. N. A., Bjergstrøm, K. N., Dwyer, V. M., Samson, J. H., Spiller, T. P., Zagoskin, A. M., Munro, W. J., Nemoto, Kae, Everitt, M. J.
Publikováno v:
Phys. Rev. B 94, 064518 (2016)
In this paper we consider the modelling and simulation of open quantum systems from a device engineering perspective. We derive master equations at different levels of approximation for a Superconducting Quantum Interference Device (SQUID) ring coupl
Externí odkaz:
http://arxiv.org/abs/1605.06268
Publikováno v:
2016 18th International Conference on Transparent Optical Networks (ICTON)
The exciting possibilities in the field of new quantum technologies extend far beyond the well-reported application of quantum computing. Precision timing, gravity sensors and imagers, cryptography, navigation, metrology, energy harvesting and recove
Externí odkaz:
http://arxiv.org/abs/1604.06548
Autor:
Sowa, A. P., Everitt, M. J., Samson, J. H., Savel'ev, S. E., Zagoskin, A. M., Heidel, S., Zúñiga-Anaya, J. C.
Publikováno v:
J Phys A 48, 415301 (2015)
The evaluation of the performance of adiabatic annealers is hindered by lack of efficient algorithms for simulating their behaviour. We exploit the analyticity of the standard model for the adiabatic quantum process to develop an efficient recursive
Externí odkaz:
http://arxiv.org/abs/1508.04938