Quantum key distribution is on the verge of real world applications, where perfectly secure
information can be distributed among multiple parties. Several quantum cryptographic …

High-dimensional entanglement promises to increase the information capacity of photons
and is now routinely generated, exploiting spatiotemporal degrees of freedom of single …

The solution of gauge theories is one of the most promising applications of quantum
technologies. Here, we discuss the approach to the continuum limit for U (1) gauge theories …

Measurement-device-independent quantum key distribution (MDI-QKD) provides us a
powerful approach to resist all attacks at detection side. Besides the unconditional security …

The discrete Fourier transform (DFT) is of fundamental interest in photonic quantum
information, yet the ability to scale it to high dimensions depends heavily on the physical …

Building communication links among multiple users in a scalable and robust way is a key
objective in achieving large-scale quantum networks. In a realistic scenario, noise from the …

The ability to detect quantum superpositions lies at the heart of fundamental and applied
aspects of quantum mechanics. The time-frequency degree of freedom of light enables …

We propose and experimentally demonstrate a new scheme for measuring high-
dimensional phase states using a two-photon interference technique, which we refer to as …

A semiquantum key distribution (SQKD) protocol allows two users, one of whom is restricted
in their quantum capabilities to being nearly classical, to establish a shared secret key …

It has been shown recently that the framework of quantum sampling, as introduced by
Bouman and Fehr, can lead to new entropic uncertainty relations highly applicable to finite …