Joint remote preparation of an arbitrary two-qubit state via GHZ-type states

Abstract

For M-sender independently share the classical knowledge of a quantum state, a scheme for joint remote preparation of an arbitrary two-qubit state by GHZtype states as the quantum channel is presented. It is shown that the receiver can reconstruct the original state with certain probability under the condition that only and only if all the senders collaborate with each other. The singlequbit and two-qubit projective measurements are needed in our scheme. We also discuss some information-splitting methods which can make the receiver obtain the unknown state.

JRSP of three-particle state via three tripartite GHZ class in quantum noisy channels

“…Thus, using the fidelity, we shall determine information loss as quantum information is been transmitted through these noisy channels. Generally speaking, this study can also be considered as furtherance of some recent works [16,17] where JRSP of twoqubit system have been studied in a noisy channel. In this paper, we shall employ three tripartite GHZ class [22,23]; 1/ √ 2 (|000 + |111 ) as quantum channel linking the three parties.…”

“…After the first proposed JRSP protocol by Xia et al, there have been several proposed probabilistic and deterministic JSRP protocols from many researchers (see [15,16,17] and references therein). The authors of reference [18] present quantum circuits and photon circuits for jointly preparing one qubit state.…”

“…To the best of our knowledge, JRSP of three-particle in quantum noisy channels has not been expounded till this moment which we fell it might be due to complexity in mathematical involved. Most efforts in literature were based on two-particle system ( [16,17] and references therein) whereas interaction of JRSP of three-particle system with environment is also not avoidable. It is therefore second fold and the priority objective of the current work to study JRSP of three-particle system in quantum noisy channels.…”

Deterministic Joint Remote Preparation of an Arbitrary Qubit via Einstein-Podolsky-Rosen Pairs

“…As a per se feature of RSP, the preparer knows the full information encoded in the to-be-prepared quantum state, that may appear unwanted in some circumstances. To avoid this feature, joint remote state preparation (JRSP) protocols [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] have recently been designed, in which there are N ≥ 2 preparers [19], who jointly perform the task but no one among them is able to identify the full content of the encoded information. Experimental architecture of JRSP has also been dealt with in Ref.…”

Controlled Remote Information Concentration via Non-Maximally Entangled GHZ-Type States

“…Since Murao and Vedral proposed the first original scheme of quantum remote information concentration, almost all of maximally entangled states, such as Bell states [20,21], GHZ states [22][23][24][25], W states [26][27][28] and the other entangled states [29][30][31][32][33] were employed as quantum channel in different schemes. Nevertheless, in practice, the coupling of the quantum state and the surrounding environment are inevitable, thus those maximally entangled quantum states that are used as quantum channel in quantum works are difficult to be generated.…”