The generation, manipulation, storage, and detection of single photons play a central role in
emerging photonic quantum information technology. Individual photons serve as flying …

Multi-level (qudit) entangled photon states are a key resource for both fundamental physics
and advanced applied science, as they can significantly boost the capabilities of novel …

The central technological appeal of quantum science resides in exploiting quantum effects,
such as entanglement, for a variety of applications, including computing, communication and …

Taking advantage of quantum mechanics for executing computational tasks faster than
classical computers or performing measurements with precision exceeding the classical …

The realization of quantum error correction is an essential ingredient for reaching the full
potential of fault-tolerant universal quantum computation. Using a range of different …

Measurement-based quantum computation offers exponential computational speed-up
through simple measurements on a large entangled cluster state. We propose and …

Quantum computing can be realized with numerous different hardware platforms and
computational protocols. A highly promising, and potentially scalable, idea is to combine a …

Tin-vacancy centers in diamond are promising spin-photon interfaces owing to their high
quantum efficiency, large Debye-Waller factor, and compatibility with photonic …

General-purpose quantum computers can, in principle, entangle a number of noisy physical
qubits to realize composite qubits protected against errors. Architectures for measurement …

We demonstrate high-fidelity repetitive measurements of nuclear spin qubits in an array of
neutral ytterbium-171 (171 Yb) atoms. We show that the qubit state can be measured with a …