Zobrazeno 1 - 10
of 925
pro vyhledávání: '"Gnatenko A"'
Autor:
Gnatenko, Kh. P.
Quantum states of spin systems that can be represented with weighted graphs $G(V, E)$ are studied. The geometrical characteristics of these states are examined. We find that the velocity of quantum evolution is determined by the sum of the weighted d
Externí odkaz:
http://arxiv.org/abs/2408.01511
Autor:
Gnatenko, Kh. P.
Publikováno v:
Physics Letters A Volume 521 , 5 October 2024, 129815
We consider quantum graph states that can be mapped to directed weighted graphs, also known as directed networks. The geometric measure of entanglement of the states is calculated for the quantum graph states corresponding to arbitrary graphs. We fin
Externí odkaz:
http://arxiv.org/abs/2407.09990
Autor:
Gnatenko, Kh. P., Tkachuk, V. M.
In the paper a review of results for recovering of the weak equivalence principle in a space with deformed commutation relations for operators of coordinates and momenta is presented. Different types of deformed algebras leading to a space quantizati
Externí odkaz:
http://arxiv.org/abs/2302.01262
Autor:
Gnatenko, Kh. P.
The geometric measure of entanglement of variational quantum states is studied on the basis of its relation with the mean value of spin. We examine n-qubit quantum states prepared by a variational circuit with a layer formed by the rotational gates a
Externí odkaz:
http://arxiv.org/abs/2301.03885
Autor:
Lisa Lazarus, Leigh M McClarty, Nicole Herpai, Daria Pavlova, Tatiana Tarasova, Anna Gnatenko, Tetiana Bondar, Robert Lorway, Marissa L Becker, the Dynamics Study Team
Publikováno v:
Journal of the International AIDS Society, Vol 27, Iss S3, Pp n/a-n/a (2024)
Abstract Introduction Since the onset of the Russian invasion on 24 February 2022, the health system in Ukraine has been placed under tremendous pressure, with damage to critical infrastructure, large losses of human resources, restricted mobility an
Externí odkaz:
https://doaj.org/article/f590f536786f4492bf0a9f3be187d669
Autor:
Gnatenko, Kh. P., Tkachuk, V. M.
Spin-1 tunneling and splitting of energy levels as a result of tunneling are observed explicitly on IBM's quantum computer, ibmq-bogota. The spin-1 is realized with two spins-1/2. We detect oscillations of spin-1 between the states $|1\rangle$, $|-1\
Externí odkaz:
http://arxiv.org/abs/2201.08872
We propose the definition of the geometric measure of entanglement for continuous variable states. On the basis of this definition we examine entanglement of the graph states obtained as a result of action of a unitary operator on the ground state of
Externí odkaz:
http://arxiv.org/abs/2112.06059
Publikováno v:
Eur. Phys. J. Plus 137, No. 4, 522 [10 p.] (2022)
We propose a method for detection of energy levels of arbitrary spin system on a quantum computer based on studies of evolution of only one probe spin. On the basis of the proposed method energy levels of spin systems are found on IBM's quantum compu
Externí odkaz:
http://arxiv.org/abs/2109.11400
Publikováno v:
Phys. Lett. A 452, 128434 (2022)
Geometric properties of evolutionary graph states of spin systems generated by the operator of evolution with Ising Hamiltonian are examined, using their relationship with fluctuations of energy. We find that the geometric characteristics of the grap
Externí odkaz:
http://arxiv.org/abs/2108.12909
Publikováno v:
Phys. Lett. A 424, 127843 (2022) 7 p
We show that the time dependence of mean value of a physical quantity is related with the transition energies of a quantum system. In the case when the operator of a physical quantity anticommutes with the Hamiltonian of a system, studies of the evol
Externí odkaz:
http://arxiv.org/abs/2108.08873