Coherent interfaces between optical photons and long-lived matter qubits form a key
resource for a broad range of quantum technologies. Cavity quantum electrodynamics …

Large-scale quantum communication networks require quantum repeaters due to the signal
attenuation in optical fibers. Ideal quantum repeater nodes efficiently link a quantum memory …

Efficient coupling of optically active qubits to optical cavities is a key challenge for solid-state-
based quantum optics experiments and future quantum technologies. Here we present a …

The nitrogen-vacancy (NV) center in diamond has been established as a prime building
block for quantum networks. However, scaling beyond a few network nodes is currently …

Diamond membrane devices containing optically coherent nitrogen-vacancy (NV) centers
are key to enable novel cryogenic experiments such as optical ground-state cooling of …

Coupling between a single quantum emitter and an optical cavity presents a key capability
for future quantum networking applications. Here, we explore interactions between …

High-performance optical quantum memories serving as quantum nodes are crucial for the
distribution of remote entanglement and the construction of large-scale quantum networks …

With a highly coherent, optically addressable electron spin, the nitrogen-vacancy (NV)
center in diamond is a promising candidate for a node in a quantum network. A resonant …

When an ensemble of quantum emitters couples to a common radiation field, their
polarizations can synchronize and a collective emission termed superfluorescence can …

Tunable open-access Fabry–Perot microcavities are versatile and widely applied in different
areas of photonics research. The open geometry of such cavities enables the flexible …