Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Harter, Andrew"'
We present a framework for designing optimal optical pulses for the matter-wave splitting of a Bose-Einstein Condensate (BEC) under the influence of experimental inhomogeneities, so that the sample is transferred from an initial rest position into a
Externí odkaz:
http://arxiv.org/abs/2309.08807
Autor:
Maraviglia, Nicola, Yard, Patrick, Wakefield, Ross, Carolan, Jacques, Sparrow, Chris, Chakhmakhchyan, Levon, Harrold, Chris, Hashimoto, Toshikazu, Matsuda, Nobuyuki, Harter, Andrew K., Joglekar, Yogesh N., Laing, Anthony
Publikováno v:
Phys. Rev. Research 4, 013051 (2022)
Parity-time ($PT$) symmetric Hamiltonians are generally non-Hermitian and give rise to exotic behaviour in quantum systems at exceptional points, where eigenvectors coalesce. The recent realisation of $PT$-symmetric Hamiltonians in quantum systems ha
Externí odkaz:
http://arxiv.org/abs/2202.00358
Autor:
Harter, Andrew K., Joglekar, Yogesh N.
Open systems with gain, loss, or both, described by non-Hermitian Hamiltonians, have been a research frontier for the past decade. In particular, such Hamiltonians which possess parity-time ($\mathcal{PT}$) symmetry feature dynamically stable regimes
Externí odkaz:
http://arxiv.org/abs/2008.01811
Autor:
Harter, Andrew K., Hatano, Naomichi
Non-Hermitian Hamiltonians provide a simple picture for analyzing systems with natural or induced gain and loss; however, in general, such Hamiltonians feature complex energies and a corresponding non-orthonormal eigenbasis. Provided that the Hamilto
Externí odkaz:
http://arxiv.org/abs/2006.16890
Autor:
Joglekar, Yogesh N., Harter, Andrew K.
Publikováno v:
Photon. Res. 6, A51-A57 (2018)
Over the past decade, parity-time ($\mathcal{PT}$)-symmetric Hamiltonians have been experimentally realized in classical, optical settings with balanced gain and loss, or in quantum systems with localized loss. In both realizations, the $\mathcal{PT}
Externí odkaz:
http://arxiv.org/abs/1807.10330
Autor:
Harter, Andrew K., Priour Jr., Donald J., Sweeney, Daniel, Saxena, Avadh, Joglekar, Yogesh N.
Open classical systems with balanced, spatially separated gain and loss, also called $\mathcal{PT}$ symmetric systems, are a subject of intense, ongoing research. We investigate the properties of a classical chain with spatially separated viscous los
Externí odkaz:
http://arxiv.org/abs/1807.06744
Autor:
León-Montiel, Roberto de J., Quiroz-Juárez, Mario A., Domínguez-Juárez, Jorge L., Quintero-Torres, Rafael, Aragón, José L., Harter, Andrew K., Joglekar, Yogesh N.
Publikováno v:
Communications Physics 1, 88 (2018)
We report the first experimental observation of multiple transitions showing the emergence and disappearance of slowly decaying eigenmodes in a dissipative, Floquet electronic system with synthetic components. Conventional wisdom has it that such tra
Externí odkaz:
http://arxiv.org/abs/1805.08393
Publikováno v:
Sci. Rep. 8, 12065 (2018)
Quantum walks often provide telling insights about the structure of the system on which they are performed. In PT-symmetric and lossy dimer lattices, the topological properties of the band structure manifest themselves in the quantization of the mean
Externí odkaz:
http://arxiv.org/abs/1802.02222
Publikováno v:
Phys. Rev. A 97, 012128 (2018)
Over the past decade, non-Hermitian, $\mathcal{PT}$-symmetric Hamiltonians have been investigated as candidates for both, a fundamental, unitary, quantum theory, and open systems with a non-unitary time evolution. In this paper, we investigate the im
Externí odkaz:
http://arxiv.org/abs/1801.04918
Publikováno v:
Nature Communications, volume 10, Article number: 855 (2019)
Open physical systems with balanced loss and gain, described by non-Hermitian parity-time ($\mathcal{PT}$) reflection symmetric Hamiltonians, exhibit a transition which could engenders modes that exponentially decay or grow with time and thus spontan
Externí odkaz:
http://arxiv.org/abs/1608.05061