Results 21 to 30 of about 167,904 (230)

Multidimensional QKD Based on Combined Orbital and Spin Angular Momenta of Photon

open access: yesIEEE Photonics Journal, 2013
It has been widely recognized that the underlying principles of quantum mechanics could be used to enable secure communications, without any additional conventional cryptographic systems, while utilizing the properties of the photons.
Ivan B. Djordjevic
doaj   +1 more source

Self-Energy Correction to the Hyperfine Splitting for Excited States [PDF]

open access: yes, 2011
The self-energy corrections to the hyperfine splitting is evaluated for higher excited states in hydrogenlike ions, using an expansion in the binding parameter Zalpha, where Z is the nuclear charge number, and alpha is the fine-structure constant.
Jentschura, U. D., Wundt, B. J.
core   +3 more sources

Bulk angular momentum and Hall viscosity in chiral superconductors [PDF]

open access: yes, 2014
We establish the Berry-phase formulas for the angular momentum (AM) and the Hall viscosity (HV) to investigate chiral superconductors (SCs) in two and three dimensions.
Kimura, Taro, Shitade, Atsuo
core   +5 more sources

Levinson theorem in two dimensions

open access: yes, 1998
A two-dimensional analogue of Levinson's theorem for nonrelativistic quantum mechanics is established, which relates the phase shift at threshold(zero momentum) for the $m$th partial wave to the total number of bound states with angular momentum $m\hbar ...
Lin, Qiong-gui
core   +2 more sources

Schwinger's oscillator method, supersymmetric quantum mechanics and massless particles

open access: yesRevista Brasileira de Ensino de Física
We consider Schwinger's method of angular momentum addition using the SU(2) algebra with both a fermionic and a bosonic oscillator. We show that the total spin states obtained are: one boson singlet state and an arbitrary number of spin-1/2 states, the ...
F. M. Mejía, V. Pleitez
doaj   +1 more source

Probability of radiation of twisted photons by classical currents [PDF]

open access: yes, 2017
The general formula for the probability of radiation of a twisted photon by a classical current is derived. The general theory of generation of twisted photons by undulators is developed.
Bogdanov, O. V.   +2 more
core   +3 more sources

Volume dependence of N-body bound states

open access: yesPhysics Letters B, 2018
We derive the finite-volume correction to the binding energy of an N-particle quantum bound state in a cubic periodic volume. Our results are applicable to bound states with arbitrary composition and total angular momentum, and in any number of spatial ...
Sebastian König, Dean Lee
doaj   +1 more source

Origin of Magic Angular Momentum in a Quantum Dot under Strong Magnetic Field

open access: yes, 1996
This paper investigates origin of the extra stability associated with particular values (magic numbers) of the total angular momentum of electrons in a quantum dot under strong magnetic field.
Ashoori R. C.   +13 more
core   +1 more source

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

Pentagonal 2D Altermagnets: Material Screening and Altermagnetic Tunneling Junction Device Application

open access: yesAdvanced Functional Materials, EarlyView.
From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang   +8 more
wiley   +1 more source

Home - About - Disclaimer - Privacy