Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Chakhmakhchyan, Levon"'
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:
Paesani, Stefano, Ding, Yunhong, Santagati, Raffaele, Chakhmakhchyan, Levon, Vigliar, Caterina, Rottwitt, Karsten, Oxenløwe, Leif K., Wang, Jianwei, Thompson, Mark G., Laing, Anthony
Implementing large instances of quantum algorithms requires the processing of many quantum information carriers in a hardware platform that supports the integration of different components. While established semiconductor fabrication processes can in
Externí odkaz:
http://arxiv.org/abs/1812.03158
Publikováno v:
Phys. Rev. A 98, 062314 (2018)
Linear canonical transformations of bosonic modes correspond to Gaussian unitaries, which comprise passive linear-optical transformations as effected by a multiport passive interferometer and active Bogoliubov transformations as effected by a nonline
Externí odkaz:
http://arxiv.org/abs/1803.11534
Publikováno v:
Phys. Rev. A 96, 032326 (2017)
We develop an alternative boson sampling model operating on single-photon states followed by linear interferometry and Gaussian measurements. The hardness proof for simulating such continuous-variable measurements is established in two main steps, ma
Externí odkaz:
http://arxiv.org/abs/1705.05299
Autor:
Chakhmakhchyan, Levon
Nous analysons les caractéristiques d'intrication de quelques matériaux à l'état solide ainsi que des systèmes particuliers d'atomes et de champs en interaction. Une étude détaillée de la riche structure de phase des modèles de spins de bass
Externí odkaz:
http://www.theses.fr/2014DIJOS026/document
Publikováno v:
J. Stat. Mech. 063204 (2017)
Ensemble inequivalence has been previously displayed only for long-range interacting systems with non-extensive energy. In order to perform the thermodynamic limit, such systems require an unphysical, so-called, Kac rescaling of the coupling constant
Externí odkaz:
http://arxiv.org/abs/1609.02054
Publikováno v:
New J. Phys. 19 033007 (2017)
Random unitary matrices find a number of applications in quantum information science, and are central to the recently defined boson sampling algorithm for photons in linear optics. We describe an operationally simple method to directly implement Haar
Externí odkaz:
http://arxiv.org/abs/1506.06220
Publikováno v:
Phys. Rev. E 92, 022101 (2015)
We propose an exactly solvable multisite interaction spin-1/2 Ising-Heisenberg model on a triangulated Husimi lattice for the rigorous studies of chaotic entanglement. By making use of the generalized star-triangle transformation, we map the initial
Externí odkaz:
http://arxiv.org/abs/1504.04764
Publikováno v:
Phys. Rev. A 90, 042324 (2014)
We consider systems of two and three qubits, mutually coupled by Heisenberg-type exchange interaction and interacting with external laser fields. We show that these systems allow one to create maximally entangled Bell states, as well as three qubit G
Externí odkaz:
http://arxiv.org/abs/1406.4793
Publikováno v:
Phys. Rev. A 88, 042312 (2013)
We adopt the beam splitter model for losses to analyse the performance of a recent compact continuous-variable entanglement distillation protocol [Phys. Rev. Lett. 108, 060502, (2012)] implemented using realistic quantum memories. We show that the de
Externí odkaz:
http://arxiv.org/abs/1308.0842