Zobrazeno 1 - 10
of 31
pro vyhledávání: '"N. V. Vitanov"'
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033092 (2020)
It has been theoretically demonstrated that two spins (qubits or qutrits), coupled by exchange interaction only, undergo a coupling-based joint Landau-Majorana-Stückelberg-Zener (LMSZ) transition when a linear ramp acts on one of the two spins. Such
Externí odkaz:
https://doaj.org/article/9a958c4afb9d446ea9bc65bfed17f7c4
Publikováno v:
arXiv
The Born–Fock theorem is one of the most fundamental theorems of quantum mechanics and forms the basis for reliable and efficient navigation in the Hilbert space of a quantum system with a time-dependent Hamiltonian by adiabatic evolution. In the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8289f3c9ce7ceabbf6c283f669e2e1e
http://arxiv.org/abs/2208.10952
http://arxiv.org/abs/2208.10952
Autor:
M Duwe, G Zarantonello, N Pulido-Mateo, H Mendpara, L Krinner, A Bautista-Salvador, N V Vitanov, K Hammerer, R F Werner, C Ospelkaus
Publikováno v:
Quantum Science and Technology
Quantum science and technology 7 (2022), Nr. 4
Quantum science and technology
Quantum science and technology 7 (2022), Nr. 4
Quantum science and technology
Microwave control of trapped ions can provide an implementation of high-fidelity two-qubit gates free from errors induced by photon scattering. Furthermore, microwave conductors may be embedded into a scalable trap structure, providing the chip-level
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7387fb1fbc53ca2edae902ec7b5f14a7
Publikováno v:
arXiv
The treatment of time-dependent dynamics of quantum systems involving multiple states poses considerable technical challenges. One of the most efficient approaches in treating such systems is the Morris–Shore (MS) transformation which decomposes th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::206241d9791a8065a0193820812dbc1c
https://doi.org/10.1088/1361-6455/ac8d3f
https://doi.org/10.1088/1361-6455/ac8d3f
Publikováno v:
Journal of Modern Optics. 56:1205-1219
The phase space characteristics of a quantum state are best captured by the Wigner distribution. This displays transparently the diagonality information of the density matrix. The complementary function offering transparently the off-diagonal element
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::285b35967fbad7d43803d6a59ca98bbc
https://doi.org/10.1080/09500340903003321
https://doi.org/10.1080/09500340903003321
Publikováno v:
Journal of Modern Optics. 54:2237-2257
Manipulation of superpositions of discrete quantum states has a mathematical counterpart in the motion of a unit-length statevector in an N-dimensional Hilbert space. Any such statevector motion can be regarded as a succession of two-dimensional rota
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8cb71ec6423549474e066fd200ae691
https://doi.org/10.1080/09500340701352060
https://doi.org/10.1080/09500340701352060
Autor:
B. W. Shore, N. V. Vitanov
Publikováno v:
Contemporary Physics. 47:341-362
The phenomenon of overdamping, when frictional forces overwhelm the restoring force of an harmonic oscillator, is well known in classical mechanics. Analogous phenomena occur in time-dependent quantum mechanics when probability loss rates (e.g. photo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29a06cbb9968560cc65a77df78d1c3af
https://doi.org/10.1080/00107510601181159
https://doi.org/10.1080/00107510601181159
Autor:
N V Vitanov
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 33:2333-2346
A simple method for measuring the parameters of a completely or partially coherent superposition of multiple atomic states is proposed. The method, which can be applied in principle to a superposition of arbitrary energy states, is described in the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::390486217d8cea7433df36a3d24b7d6d
https://doi.org/10.1088/0953-4075/33/12/314
https://doi.org/10.1088/0953-4075/33/12/314
Autor:
N V Vitanov
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 28:1975-1984
Previous work has suggested that non-analyticity of the time-dependent coupling between two states can lead to spurious non-physical contributions to transition probability. We demonstrate that this does not occur for the exponential pulses in the De
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac42469ecbd671c3fe7f5ff1a72c9a88
https://doi.org/10.1088/0953-4075/28/10/010
https://doi.org/10.1088/0953-4075/28/10/010
Autor:
N V Vitanov
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 27:1791-1805
The Delos-Thorson-type generalization of the exponential model of Nikitin in the two-state theory of atomic collisions is presented. The generalized Nikitin model defines a class of pairs of energy differences and couplings of which the original Niki
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::661fafa39daedd63503bc92ca20844dc
https://doi.org/10.1088/0953-4075/27/9/016
https://doi.org/10.1088/0953-4075/27/9/016