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On Nelson-Type Hamiltonians and Abstract Boundary Conditions
We construct Hamiltonians for systems of nonrelativistic particles linearly coupled to massive scalar bosons using abstract boundary conditions. The construction yields an explicit characterisation…
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A far-off-resonance optical trap for a Ba+ ion.
TLDR
These results will be relevant, for example, for ion-atom ensembles, to enable 4-5 orders of magnitude lower common temperatures, accessing the regime of ultracold interaction and chemistry, where quantum effects are predicted to dominate.
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On a direct description of pseudorelativistic Nelson Hamiltonians
Abstract interior-boundary conditions (IBC's) allow for the direct description of the domain and the action of Hamiltonians for a certain class of ultraviolet-divergent models in Quantum Field…
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On the domain of Nelson-type Hamiltonians and abstract boundary conditions
We construct Hamiltonians for systems of nonrelativistic particles linearly coupled to massive scalar bosons using abstract boundary conditions. The construction yields an explicit characterisation…
Mass-selective removal of ions from Paul traps using parametric excitation
TLDR
This method enables efficient removal of ions from the trap with modest excitation voltages and narrow bandwidth, therefore, substantially reducing the disturbance of ions with other charge-to-mass ratios.
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Phase noise reduction of mutually tunable lasers with an external acousto-optic modulator
Phase noise reduction in an optical phase-locked loop is investigated using an acousto-optic actuator external to the laser cavity and primary stabilization lock. This method does not require…
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Long lifetimes and effective isolation of ions in optical and electrostatic traps
Long trapping times, as well as low heating and decoherence rates, essentially isolating individual particles from the environment, are crucial ingredients for controlling these particles on the…
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Optical Trapping of Ion Coulomb Crystals
The electronic and motional degrees of freedom of trapped ions can be controlled and coherently coupled on the level of individual quanta. Assembling complex quantum systems ion by ion while keeping…
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Particle Creation at a Point Source by Means of Interior-Boundary Conditions
We consider a way of defining quantum Hamiltonians involving particle creation and annihilation based on an interior-boundary condition (IBC) on the wave function, where the wave function is the…
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Simulation of stationary Gaussian noise with regard to the Langevin equation with memory effect.
TLDR
An efficient method is presented for simulating a stationary Gaussian noise with an arbitrary covariance function and the impact of time-correlated noise on the time evolution of a (1+1)-dimensional generalized Langevin equation is studied.
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