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- The University of TokyoJP59 papers
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- Max Planck Institute for the Physics of Complex SystemsDE10 papers
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27 papers · 1 filter
Interaction modulation in a long-lived Bose-Einstein condensate by rf coupling
Kosuke Shibata, Aki Torii, Hitoshi Shibayama +3
We demonstrate modulation of the effective interaction between the magnetic sublevels of the hyperfine spin in a Rb Bose-Einstein condensate by Rabi coupling with radi…
Introduction to the "second quantization" formalism for non-relativistic quantum mechanics: A possible substitution for Sections 6.7 and 6.8 of Feynman's "Statistical Mechanics"
Hal Tasaki
This is a self-contained and hopefully readable account on the method of creation and annihilation operators (also known as the Fock space representation or the "second quantizatio…
Vison-Majorana complex zero-energy resonance in Kitaev's spin liquid
Masafumi Udagawa
We study the effect of site dilution in Kitaev's model. We derive an analytical solution of the dynamical spin correlation functions for arbitrary configurations of fluxes. B…
Majorana edge magnetization in the Kitaev honeycomb model
Tomonari Mizoguchi, Tohru Koma
We propose an approach to detect the peculiarity of Majorana fermions at the edges of Kitaev magnets. As is well known, a pair of Majorana edge modes is realized when a single comp…
Spectrum of itinerant fractional excitations in quantum spin ice
Masafumi Udagawa, Roderich Moessner
We study the quantum dynamics of fractional excitations in quantum spin ice. We focus on the density of states in the two-monopole sector, , as this can be connected to the w…
Secret key rate of a continuous-variable quantum-key-distribution scheme when the detection process is inaccessible to eavesdroppers
Ryo Namiki, Akira Kitagawa, Takuya Hirano
We have developed a method to calculate a secret key rate of a continuous-variable quantum-key-distribution scheme using four coherent states and postselection for a general model…