In the past 20 years, impressive progress has been made both experimentally and
theoretically in superconducting quantum circuits, which provide a platform for manipulating …

Quantum light–matter interfaces are at the heart of photonic quantum technologies.
Quantum memories for photons, where non-classical states of photons are mapped onto …

The ability to process optical signals without passing into the electrical domain has always
attracted the attention of the research community. Processing photons by photons unfolds …

Entanglement purification is a very important element for long-distance quantum
communication. Different from all the existing entanglement purification protocols (EPPs) in …

It is impossible to unambiguously distinguish the four Bell states in polarization, resorting to
linear optical elements only. Recently, the hyperentangled Bell state, the simultaneous …

A deterministic photon-photon quantum logic gate is a long-standing goal. Building such a
gate becomes possible if a light pulse containing only one photon imprints a phase shift of π …

Entanglement between quantum and classical objects is of special interest in the context of
fundamental studies of quantum mechanics and potential applications for quantum …

We investigate the effective interaction between two microwave fields, mediated by a
transmon-type superconducting artificial atom which is strongly coupled to a coplanar …

We present two realistic entanglement concentration protocols (ECPs) for pure partially
entangled photons. A partially entangled photon pair can be concentrated to a maximally …

We propose a scheme to realize deterministic quantum teleportation using linear optics and
hybrid qubits. It enables one to efficiently perform teleportation and universal linear-optical …