We present two two-step practical entanglement concentration protocols for concentrating
an arbitrary three-particle less-entangled W state into a maximally entangled W state …

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 universal way to concentrate an arbitrary N-particle less-entangled W state
into a maximally entangled W state with different parity check gates. It comprises two …

We propose a scheme to achieve a tunable nonreciprocal magnon laser with parametric
amplification in a hybrid cavity optomagnonical system, which consists a yttrium iron garnet …

The Bell state plays a significant role in the fundamental tests of quantum mechanics, such
as the nonlocality of the quantum world. The Bell-state analysis is of vice importance in …

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 …

In this paper, based on the idea of reverse engineering, we propose a scheme to find
analytical expressions of a laser pulse that allows for controlling the evolution of two-level …

The dynamics of nonlinear flip-flop quantum walk with amplitude-dependent phase shifts
with pertubing potential barrier is investigated. Through the adjustment between uniform …

The cross-Kerr nonlinearity (XKNL) effect can induce efficient photon interactions in principle
with which photonic multiqubit gates can be performed using far fewer physical resources …

How to implement multi-qubit gates is an important problem in quantum information
processing. Based on cross phase modulation, we present an approach to realizing a family …