To study quantum remote control in the form of hierarchical quantum sharing, by using a
Hadamard gate, control-NOT gates and rotation gates, we construct a five-qubit partially …

What resources are universal for quantum computation? In the standard model of a quantum
computer, a computation consists of a sequence of unitary gates acting coherently on the …

In order to effectively use partially entangled pairs, we consider two kinds of generalized
bidirectional quantum teleportation (GBQT) protocols in the different cases:(I) Alice and Bob …

Distributed quantum computing (DQC) is a new paradigm aimed at scaling up quantum
computing via the interconnection of smaller quantum processing units (QPUs). Shared …

An explicit scheme (quantum circuit) is designed for the teleportation of an n-qubit quantum
state. It is established that the proposed scheme requires an optimal amount of quantum …

In a recent paper, Walgate et al.(Phys. Rev. Lett. 85 (2000) 4972) demonstrated that any two
orthogonal multipartite pure states can be optimally distinguished using only local …

We study the remote implementation of a unitary transformation on the state of a qubit. We
show the existence of nontrivial protocols (ie, using less resources than bidirectional state …

This chapter expresses what a breath of fresh air it has been since a few phenomenological
philosophers have started to engage with QBism. In service of the newfound discussion, the …

We present a general scheme for hierarchical controlled remote preparation of an arbitrary
m-qudit state by using m four-qudit cluster states as the quantum channel. The sender first …

It is shown that a realistic controlled bidirectional remote state preparation is possible using
a large class of entangled quantum states having a particular structure. Existing protocols of …