We demonstrate remote entanglement of trapped-ion qubits via a quantum-optical fiber link
with fidelity and rate approaching those of local operations. Two Sr+ 88 qubits are entangled …

We demonstrate quantum entanglement of two trapped atomic ion qubits using a sequence
of ultrafast laser pulses. Unlike previous demonstrations of entanglement mediated by the …

Single atoms or atom-like emitters are the purest source of single photons, they are
intrinsically incapable of multi-photon emission. To demonstrate this degree of photon …

Superresolution microscopy has revolutionized the fields of chemistry and biology by
resolving features at the molecular level. In atomic physics, such a scheme can be applied to …

Tip-enhanced nano-spectroscopy, such as tip-enhanced photoluminescence (TEPL) and tip-
enhanced Raman spectroscopy (TERS), generally suffers from inconsistent signal …

Far-field optical imaging techniques allow the determination of the position of point-like
emitters and scatterers 1, 2, 3. Although the optical wavelength sets a fundamental limit to …

Entanglement-based quantum science exploits subtle properties of quantum mechanics into
applications such as quantum computing, sensing, and metrology. The emerging route for …

We report on image processing techniques and experimental procedures to determine the
lattice-site positions of single atoms in an optical lattice with high reliability, even for limited …

The dimension of the state space for information encoding offered by the transverse
structure of light is usually limited by the finite size of apertures. The widely used orbital …