Quantum teleportation of an arbitrary two-qubit state and its relation to multipartite entanglement

Rigolin, Gustavo

doi:10.1103/physreva.71.032303

Cited by 281 publications

(154 citation statements)

References 12 publications

Supporting

Mentioning

149

Contrasting

Unclassified

Order By: Relevance

“…In particular, for a GHZ state, c vanishes for W -states -similarly like for tri-partite systems where W -states bear only bipartite correlations . In the specific case of two-level systems, this particular choice of c (1234) 4 measures the potential of a given state for multi-particle teleportation [72].…”

Section: = 4pmentioning

confidence: 99%

Measures and dynamics of entangled states

et al. 2005

View full text Add to dashboard Cite

We develop an original approach for the quantitative characterisation of the entanglement properties of, possibly mixed, bi-and multipartite quantum states of arbitrary finite dimension. Particular emphasis is given to the derivation of reliable estimates which allow for an efficient evaluation of a specific entanglement measure, concurrence, for further implementation in the monitoring of the time evolution of multipartite entanglement under incoherent environment coupling. The flexibility of the technical machinery established here is illustrated by its implementation for different, realistic experimental scenarios.

show abstract

Section: = 4pmentioning

confidence: 99%

Measures and dynamics of entangled states

et al. 2005

View full text Add to dashboard Cite

show abstract

“…While in the protocol of quantum teleportation of [66] or even in latter improved paper [67], the four-qubit entangled channel can be reduced to a tensor product of two Bell states. To avoid this problem and to ensure the success of faithfully teleporting any arbitrary two-qubit state, Ye et al proposed a protocol to implement teleporting process using a four-qubit entangled channel.…”

Section: Quantum Teleportationmentioning

confidence: 99%

Recent development in quantum communication

Song

Wang

2012

Chin. Sci. Bull.

View full text Add to dashboard Cite

In this review article, we will review the recent process of quantum communications. In the past decades, there are many developments in quantum communication, for instance, quantum key distribution, quantum teleportation, quantum secure direct communication, deterministic secure quantum communication, quantum secret sharing and so on. And we focus our attention on the recent developments in quantum communication protocols. The principles in quantum mechanics provide novel ways for quantum information transmission and processing, such as quantum computation and quantum communication. In the past decades, quantum information processing has emerged as a promising technology with strategic importance. Because of the peculiar properties of quantum systems, quantum computers possess enormous power that is superior to classical computer. Using quantum computer, factorization of an integer can be accomplished in polynomial time with the Shor algorithm [1]. And we can find a marked item with high probability from an unsorted database with a square-root speedup with the Grover algorithm [2]. In the past decades, the field of quantum information processing and quantum computation have attracted much attention [3][4][5][6]. With these quantum algorithms and a quantum computer, many classical cryptography protocols can be attacked. Thus it is vital to find new cryptographic systems for defending against these attacks.In the following years, there are many branches of quantum communications that are generated which provides us secure ways of communications, such as quantum key distribution (QKD), quantum teleportation, quantum secure direct communication, quantum secret sharing and so on. QKD provides a secure way to distribute secret keys between distant *Corresponding author (email: wangchuan@bupt.edu.cn) users which solves the problem for secure distributing of keys in the classical one-time-pad protocol [7]. However, quantum communication offers more power than QKD. Quantum secret sharing (QSS) distributes secret keys to two or more shared users [8], which can be viewed as the quantum key distribution between multi-users. Quantum teleportation is a basic ingredient in quantum information architectures [9,10]. The principle of quantum teleportation is to transfer an unknown state to the legal user at a distant distance. Quantum secure direct communication (QSDC) offers direct communication of secret messages between distant users, which saves completely the need for another classical communication as in the QKD case. In recent years, there have been considerable developments from researchers in the design of quantum communication protocols. In this article, we will focus on these developments in quantum communications. A brief history and key techniques of quantum communicationQKD provides an unconditional secure way of information exchange between two distant users. The first QKD protocol is proposed by Bennett and Brassard [7], called the BB84 protocol. In 1992, Bennett proposed a simplified version of

show abstract

“…Further results related to quantum teleportation, that can be exploited in quantum secret sharing, include results using multipartite quantum channels such as tripartite GHZ state [8], four-partite GHZ state [16], an asymmetric W state [1] and the cluster state [3]. The perfect teleportation of an arbitrary two-qubit state was proposed using quantum channels formed by the tensor product of two Bell states [19], tensor product of two orthogonal states [22], genuinely entangled five qubit state [12], five qubit cluster state [11] and six qubit genuinely entangled states [10]. The idea of Quantum Secret Sharing (QSS) of a single qubit was first due to Hilery et al [7] using three and four qubit GHZ states.…”

Section: Introductionmentioning

confidence: 99%