A few decades ago, quantum optics stood out as a new domain of physics by exhibiting
states of light with no classical equivalent. The first investigations concerned single photons …

Concurrence provides us an effective approach to quantify entanglement, which is quite
important in quantum information processing applications. In the paper, we mainly review …

We present a scheme to generate the ideal nonreciprocal tripartite entanglement in a cavity
magnonic system where a yttrium iron garnet sphere is placed in a spinning microwave …

A quantum key agreement (QKA) protocol by utilizing a four-photon cluster state is proposed
in this paper. The proposed QKA protocol extends the two-party QKA protocol with four-qubit …

Photon loss is one of the main obstacles in long-distance quantum communication. In this
letter, we put forward a highly efficient recyclable amplification protocol for protecting the …

Dicke state is one of the most useful multipartite quantum states. In this paper, by utilizing the
method of designing the evolution operators to construct shortcuts to adiabatic passages …

The optical coupling of superconducting nanowire single-photon detectors (SNSPDs) has
always been restricted to a single-mode fiber for a limited detection area. In this study, for …

We describe a feasible logic Bell-state analysis protocol by employing the logic
entanglement to be the robust concatenated Greenberger-Horne-Zeilinger (C-GHZ) state …

Abstract Concatenated Greenberger–Horne–Zeilinger (C-GHZ) state, which encodes
physical qubits in a logic qubit, has great application in the future quantum communication …

We study the entanglement dynamics of two particles confined in a Razavy-type coupled
double-well system that is subjected to a static electric field. Starting with an initial wave …