Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Communications in Theoretical Physics

Classical Communication and Entanglement Cost in Preparing a Class of Multi-qubit States

Guixia Pan, Yimin Liu, Zhanjun Zhang

Published Mar 1, 2008• 7 citations
Publisher

Abstract

Recently, several similar protocols [J. Opt. B 4 (2002) 380; Phys. Lett. A 316 (2003) 159; Phys. Lett. A 355 (2006) 285; Phys. Lett. A 336 (2005) 317] for remotely preparing a class of multi-qubit states (i.e, α|0...0〉 + β|1...1〉) were proposed, respectively. In this paper, by applying the controlled-not (CNOT) gate, a new simple protocol is proposed for remotely preparing such class of states. Compared to the previous protocols, both classical communication cost and required quantum entanglement in our protocol are remarkably reduced. Moreover, the difficulty of identifying some quantum states in our protocol is also degraded. Hence our protocol is more economical and feasible.

DOI
10.1088/0253-6102/49/3/23

Related papers

Classical communication and entanglement cost in preparing a class of multi-qubit states

Zhanjun Zhang

Recently, several similar protocols[J. Opt. B 4 (2002) 380; Phys. Lett. A 316 (2003) 159; Phys. Lett. A 355 (2006) 285; Phys. Lett. A 336 (2005) 317] for remotely preparing a class of multi-qubit states (i.e, $α|0 ... 0>+β|1... 1>$) are proposed, respectively. In this paper, by applying the controlled-not (CNOT) gate, a new simple protocol is proposed for remotely preparing such class of states. Compared to the previous protocols, both classical communication cost and required quantum entanglement in our protocol are remarkably reduced. Moreover, the difficulty of identifying some quantum states in our protocol is also degraded. Hence our protocol is more economical and feasible.

arXiv:0708.2536•Aug 19, 2007•0 citations

JOINT REMOTE PREPARATION OF A MULTI-QUBIT GHZ-CLASS STATE VIA BIPARTITE ENTANGLEMENTS

Zhang-Yin Wang

By joint actions of two separate two-qubit projective measurements, I present a new protocol for remotely preparing a two-qubit state via the shared three bipartite entanglements. The success probability and the classical communication cost are also minutely calculated. Then I concisely generalize it to multi-party case and multi-qubit state case, respectively. In contrast to the previous schemes [Int. J. Theor. Phys.48 (2009) 2005; Int. J. Theor. Phys.46 (2007) 2378; Commun. Theor. Phys.47 (2007) 247], this protocol has distinct advantages overwhelming the above ones as far as quantum resource consumption and quantum operation difficulty or intensity are concerned.

International Journal of Quantum Information•Mar 1, 2011•16 citations

Classical Communication and Entanglement Cost in Preparing a Class of Multi-qubit States

Pan, Gui-Xia, Liu +3 more

最近，几个类似的协议[J。抉择。B 4 (2002 ) 380；Phys。Lett。一 316 (2003 ) 159；Phys。Lett。一 355 (2006 ) 285；Phys。Lett。一 336 (2005 ) 317 ] 为遥远地准备 multi-qubit 状态的一个班(即， α|0... 0 〉 +β|1... 1 〉) 分别地被建议。在这糊，由适用控制不(CNOT ) 门，一个新简单协议为遥远地准备状态的如此的班被建议。在我们的协议比作以前的协议，两古典通讯费用和要求的量纠纷显著地被减少。而且，在我们的协议识别一些量状态的困难也被降级。因此我们的协议更节俭、可行。

理论物理通讯：英文版•Jan 1, 2008•2 citations

Efficient schemes of joint remote preparation with a passive receiver via EPR pairs

马松雅, 高聪, 罗明星

Novel schemes are put forward to execute the joint remote preparation of an arbitrary two-qubit state with a passive receiver via EPR pairs as the entangled channel. Compared with the previous protocols, the required multi-particle measurement is simplified and the classical communication cost is reduced. When the number of senders increases, the advantage is more evident. It means that the proposed schemes are more efficient in practice.

中国物理B：英文版•Jan 1, 2015•0 citations

Efficient schemes of joint remote preparation with a passive receiver via EPR pairs

Song-Ya Ma, Cong Gao, Ming‐Xing Luo

Novel schemes are put forward to execute the joint remote preparation of an arbitrary two-qubit state with a passive receiver via EPR pairs as the entangled channel. Compared with the previous protocols, the required multi-particle measurement is simplified and the classical communication cost is reduced. When the number of senders increases, the advantage is more evident. It means that the proposed schemes are more efficient in practice.

Chinese Physics B•Nov 1, 2015•14 citations

SCHEME FOR REMOTELY PREPARING THREE-PARTICLE GHZ-CLASS STATES

Guixia Pan, Yimin Liu, Wen Zhang +1 more

A scheme is proposed for remotely preparing a class of three-particle GHZ states by using a Bell state and a three-qubit GHZ state as the quantum channel. In the scheme, a two-qubit collective state measurement is performed and the necessary classical communication cost is 0.25 cbit on average. In general, the target state can be successfully prepared with the probability 1/4. However, if the state belongs to some special classes, the preparation success probability can reach 0.5 or even 1 after consuming a little additional classical resource. Comparing with the recent scheme [Opt. Commun.281, 871 (2008)], the present scheme has some advantages, e.g., the simpler quantum joint measurement and the less classical resource consumption.

International Journal of Modern Physics C•Apr 1, 2009•2 citations
Recently, several similar protocols [J. Opt. B 4 (2002) 380; Phys. Lett. A 316 (2003) 159; Phys. Lett. A 355 (2006) 285; Phys. Lett. A 336 (2005) 317] for remotely preparing a class of multi-qubit states (i.e, α|0...0〉 + β|1...1〉) were proposed, respectively. In this paper, by applying the controlled-not (CNOT) gate, a new simple protocol is proposed for remotely preparing such class of states. Compared to the previous protocols, both classical communication cost and required quantum entanglement in our protocol are remarkably reduced. Moreover, the difficulty of identifying some quantum states in our protocol is also degraded. Hence our protocol is more economical and feasible.
Recently, several similar protocols[J. Opt. B 4 (2002) 380; Phys. Lett. A 316 (2003) 159; Phys. Lett. A 355 (2006) 285; Phys. Lett. A 336 (2005) 317] for remotely preparing a class of multi-qubit states (i.e, α∣0...0>+β∣1...1>α|0 ... 0>+β|1... 1>α∣0...0>+β∣1...1>) are proposed, respectively. In this paper, by applying the controlled-not (CNOT) gate, a new simple protocol is proposed for remotely preparing such class of states. Compared to the previous protocols, both classical communication cost and required quantum entanglement in our protocol are remarkably reduced. Moreover, the difficulty of identifying some quantum states in our protocol is also degraded. Hence our protocol is more economical and feasible.
By joint actions of two separate two-qubit projective measurements, I present a new protocol for remotely preparing a two-qubit state via the shared three bipartite entanglements. The success probability and the classical communication cost are also minutely calculated. Then I concisely generalize it to multi-party case and multi-qubit state case, respectively. In contrast to the previous schemes [Int. J. Theor. Phys.48 (2009) 2005; Int. J. Theor. Phys.46 (2007) 2378; Commun. Theor. Phys.47 (2007) 247], this protocol has distinct advantages overwhelming the above ones as far as quantum resource consumption and quantum operation difficulty or intensity are concerned.
最近，几个类似的协议[J。抉择。B 4 (2002 ) 380；Phys。Lett。一 316 (2003 ) 159；Phys。Lett。一 355 (2006 ) 285；Phys。Lett。一 336 (2005 ) 317 ] 为遥远地准备 multi-qubit 状态的一个班(即， α|0... 0 〉 +β|1... 1 〉) 分别地被建议。在这糊，由适用控制不(CNOT ) 门，一个新简单协议为遥远地准备状态的如此的班被建议。在我们的协议比作以前的协议，两古典通讯费用和要求的量纠纷显著地被减少。而且，在我们的协议识别一些量状态的困难也被降级。因此我们的协议更节俭、可行。
A scheme is proposed for remotely preparing a class of three-particle GHZ states by using a Bell state and a three-qubit GHZ state as the quantum channel. In the scheme, a two-qubit collective state measurement is performed and the necessary classical communication cost is 0.25 cbit on average. In general, the target state can be successfully prepared with the probability 1/4. However, if the state belongs to some special classes, the preparation success probability can reach 0.5 or even 1 after consuming a little additional classical resource. Comparing with the recent scheme [Opt. Commun.281, 871 (2008)], the present scheme has some advantages, e.g., the simpler quantum joint measurement and the less classical resource consumption.