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39 papers · 1 filter
Theory of a Carbon-Nanotube Polarization Switch
Ken-ichi Sasaki, Yasuhiro Tokura
Recently, it was suggested that the polarization dependence of light absorption to a single-walled carbon nanotube is altered by carrier doping. We specify theoretically the doping…
Inversion of Qubit Energy Levels in Qubit-Oscillator Circuits in the Deep-Strong-Coupling Regime
Fumiki Yoshihara, Tomoko Fuse, Ziqiao Ao +6
We report on experimentally measured light shifts of superconducting flux qubits deep-strongly coupled to LC oscillators, where the coupling constants are comparable to the qubit a…
Entanglement and secret-key-agreement capacities of bipartite quantum interactions and read-only memory devices
Siddhartha Das, Stefan Bäuml, Mark M. Wilde
A bipartite quantum interaction corresponds to the most general quantum interaction that can occur between two quantum systems in the presence of a bath. In this work, we determine…
Electron paramagnetic resonance spectroscopy using a single artificial atom
Hiraku Toida, Yuichiro Matsuzaki, Kosuke Kakuyanagi +4
Electron paramagnetic resonance (EPR) spectroscopy is an important technology in physics, chemistry, materials science, and biology. Sensitive detection with a small sample volume…
Graphene multi-mode parametric oscillators
Robin J. Dolleman, Samer Houri, Abhilash Chandrashekar +3
In the field of nanomechanics, parametric excitations are of interest since they can greatly enhance sensing capabilities and eliminate cross-talk. However, parametric excitations…
Generation of entangled photons using an arrayed waveguide grating
Nobuyuki Matsuda, Hidetaka Nishi, Peter Karkus +5
We propose an on-chip source of entangled photon pairs that uses an arrayed-waveguide grating (AWG) with multiple nonlinear input waveguides as correlated photon pair sources. The…