Results 31 to 40 of about 827,368 (345)
Nanomaterials, 2022 The highly localized and uneven spatial distribution of the subwavelength light field in metal metasurfaces provides a promising means for the generation of optical vortices (OVs) with arbitrary topological charges.
Qing’an Sun +7 more
doaj +1 more source
Physical Review Letters, 2000 5 pages 2 figures - RevTeX.
N. Manini, F. Pistolesi
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Geometric Phase in Open Systems [PDF]
Physical Review Letters, 2003 We calculate the geometric phase associated to the evolution of a system subjected to decoherence through a quantum-jump approach. The method is general and can be applied to many different physical systems. As examples, two main source of decoherence are considered: dephasing and spontaneous decay.
Carollo, A. +3 more
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Geometric conjecture about phase transitions
Physical Review E, 2023 As phenomena that necessarily emerge from the collective behavior of interacting particles, phase transitions continue to be difficult to predict using statistical thermodynamics. A recent proposal called the topological hypothesis suggests that the existence of a phase transition could perhaps be inferred from changes to the topology of the accessible
O. B. Eriçok, J. K. Mason
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Geometric Phase and Quantum Phase Transition in the Lipkin-Meshkov-Glick model [PDF]
, 2006 The relation between the geometric phase and quantum phase transition has been discussed in the Lipkin-Meshkov-Glick model. Our calculation shows the ability of geometric phase of the ground state to mark quantum phase transition in this model.
Berry +35 more
core +2 more sources
Geometric phase gate without dynamical phases [PDF]
Physical Review A, 2004 A general scheme for an adiabatic geometric phase gate is proposed which is maximally robust against parameter fluctuations. While in systems with SU(2) symmetry geometric phases are usually accompanied by dynamical phases and are thus not robust, we show that in the more general case of a SU(2) x SU(2) symmetry it is possible to obtain a non-vanishing
Unanyan, R. G., Fleischhauer, M.
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Unifying geometric entanglement and geometric phase in a quantum phase transition [PDF]
Physical Review A, 2013 Geometric measure of entanglement and geometric phase have recently been used to analyze quantum phase transition in the XY spin chain. We unify these two approaches by showing that the geometric entanglement and the geometric phase are respectively the real and imaginary parts of a complex-valued geometric entanglement, which can be investigated in ...
Azimi Mousolou, V. +2 more
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The Sixteenth Marcel Grossmann Meeting, 2023 10 pages; based on the talk given in the 16th Marcel Grossmann Meeting (MG16) held online during July 5-10, 2021; to appear in the proceeding of ...
Mukhopadhyay, Banibrata +2 more
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Geometric phase in Stückelberg interferometry [PDF]
Physical Review A, 2015 We study the time evolution of a two-dimensional quantum particle exhibiting an energy spectrum, made of two bands, with two Dirac cones, as e.g. in the band structure of a honeycomb lattice. A force is applied such that the particle experiences two Landau-Zener transitions in succession. The adiabatic evolution between the two transitions leads to St
Lim, L., Fuchs, J., Montambaux, G.
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Observation of a non-adiabatic geometric phase for elastic waves [PDF]
, 2012 We report the experimental observation of a geometric phase for elastic waves in a waveguide with helical shape. The setup reproduces the experiment by Tomita and Chiao [A. Tomita, R.Y. Chiao, Phys. Rev. Lett.
Agarwal +24 more
core +5 more sources