MULTIPARTY CONTROLLED DETERMINISTIC SECURE QUANTUM COMMUNICATION THROUGH ENTANGLEMENT SWAPPING

2008 ◽  
Vol 19 (11) ◽  
pp. 1673-1681 ◽  
Author(s):  
LI DONG ◽  
XIAO-MING XIU ◽  
YA-JUN GAO ◽  
FENG CHI
Keyword(s):  
Quantum Channel ◽  
Secure Communication ◽  
Quantum Communication ◽  
Entanglement Swapping ◽  
Deterministic Secure Quantum Communication ◽  
Classical Information ◽  
Secret Information ◽  
Ghz States ◽  
Quantum Secure Communication ◽  
Communication Scheme

A three-party controlled deterministic secure quantum communication scheme through entanglement swapping is proposed firstly. In the scheme, the sender needs to prepare a class of Greenberger–Horne–Zeilinger (GHZ) states which are used as quantum channel. The two communicators may securely communicate under the control of the controller if the quantum channel is safe. The roles of the sender, the receiver, and the controller can be exchanged owing to the symmetry of the quantum channel. Different from other controlled quantum secure communication schemes, the scheme needs lesser additional classical information for transferring secret information. Finally, it is generalized to a multiparty controlled deterministic secure quantum communication scheme.

DETERMINISTIC SECURE QUANTUM COMMUNICATION WITH FOUR-QUBIT W STATES

2011 ◽  
Vol 09 (01) ◽  
pp. 607-614 ◽  
Author(s):  
HAO YUAN ◽  
JUN SONG ◽  
XIANG-YUAN LIU ◽  
SHAN CHENG ◽  
KUI HOU ◽  
...  
Keyword(s):  
Quantum Communication ◽  
High Capacity ◽  
W State ◽  
Deterministic Secure Quantum Communication ◽  
Classical Information ◽  
Secret Information ◽  
W States ◽  
Intrinsic Efficiency ◽  
Bell Basis ◽  
Almost All

We propose a new protocol for deterministic secure quantum communication with a four-qubit W state. In this protocol, by using four local two-particle unitary operations and Bell basis measurements, the two legitimate users can directly transmit secret messages after exchanging some additional classical information. It will be shown that our protocol has a high capacity as each W state can carry two bits of secret information, and has a high intrinsic efficiency because almost all the instances are useful. Furthermore, this protocol is feasible with present day techniques.

scholarly journals Quantum secure communication models comparison

2017 ◽  
Vol 1 (1) ◽  
pp. 21-26
Author(s):  
Georgi Petrov Bebrov ◽  
Rozalina Stefanova Dimova
Keyword(s):  
Quantum Cryptography ◽  
Secure Communication ◽  
Quantum Communication ◽  
Quantum Secure Direct Communication ◽  
Resource Efficiency ◽  
Direct Communication ◽  
Deterministic Secure Quantum Communication ◽  
Quantum Secure Communication ◽  
Communication Models ◽  
Models Comparison

The paper concerns the quantum cryptography, more specifically, the quantum secure communication type of schemes. The main focus here is on making a comparison between the distinct secure quantum communication models – quantum secure direct communication and deterministic secure quantum communication, in terms of three parameters: resource efficiency, eavesdropping check efficiency, and security (degree of preserving the confidentiality).

scholarly journals Bidirectional Quantum Communication through the Composite GHZ-GHZ Channel

2020 ◽  
Vol 10 (16) ◽  
pp. 5500
Author(s):  
Shuangshuang Shuai ◽  
Na Chen ◽  
Bin Yan
Keyword(s):  
Quantum Communication ◽  
Information Leakage ◽  
Quantum Measurements ◽  
Transmission Scheme ◽  
Quantum Bits ◽  
Ghz States ◽  
Surrounding Environment ◽  
Measurement Results ◽  
Different Types ◽  
Communication Scheme

This paper solved the problem of transmitting quantum bits (qubits) in a multi-hop and bidirectional way. Considering that the Greenberger–Horne–Zeilinger (GHZ) states are less prone to the decoherence effects caused by the surrounding environment, we proposed a bidirectional quantum communication scheme based on quantum teleportation and the composite GHZ-GHZ states. On a multi-hop quantum path, different types of GHZ states are previously shared between the adjacent intermediate nodes. To implement qubit transmission, the sender and intermediate nodes perform quantum measurements in parallel, and then send their measurement results and the types of previously shared GHZ states to the receiver independently. Based on the received information, the receiver performs unitary operations on the local particle, thus retrieving the original qubit. Our scheme can avoid information leakage at the intermediate nodes and can reduce the end-to-end communication delay, in contrast to the hop-by-hop qubit transmission scheme.

Three-Party Simultaneous Quantum Secure Communication with Unidirectional Qubit Transmission

2015 ◽  
Vol 740 ◽  
pp. 857-860
Author(s):  
Xun Ru Yin
Keyword(s):  
Secure Communication ◽  
Closed Loop ◽  
Communication Protocol ◽  
Quantum Secure Direct Communication ◽  
The Other ◽  
Quantum Channels ◽  
Direct Communication ◽  
Secret Information ◽  
Quantum Secure Communication ◽  
Encoded Particles

A three-party quantum secure direct communication protocol is proposed, in which the qubit transmission forms a closed loop. In this scheme, each party implements the corresponding unitary operations according to his secret bit value over the quantum channels. Then, by performing Bell measurements on the encoded particles, each party can extract the other two parties’ secret information simultaneously. Thus the three parties realize the direct exchange successfully.

AN EFFICIENT DETERMINISTIC SECURE QUANTUM COMMUNICATION SCHEME WITH CLUSTER STATE

2009 ◽  
Vol 07 (03) ◽  
pp. 689-696 ◽  
Author(s):  
HAO YUAN ◽  
JUN SONG ◽  
XIAOYUAN HU ◽  
KUI HOU
Keyword(s):  
Quantum Communication ◽  
Quantum Computer ◽  
Cluster State ◽  
High Capacity ◽  
Secret Message ◽  
Present Scheme ◽  
Deterministic Secure Quantum Communication ◽  
Efficient Scheme ◽  
Communication Scheme ◽  
Almost All

A novel efficient scheme for deterministic secure quantum communication with cluster state is proposed. By utilizing Bell-basis- and [Formula: see text]-basis-measurements, the two legitimate users can directly transmit secret message after exchanging some additional classical information. It has a high capacity as each cluster state can carry two bits of information, and has a high intrinsic efficiency because almost all the instances are useful. Since the present scheme is based on the cluster state which is robust against decoherence, it is easily processed by a one-way quantum computer. Furthermore, this scheme is feasible with present-day technique.

scholarly journals Experimental quantum conference key agreement

2021 ◽  
Vol 7 (23) ◽  
pp. eabe0395
Author(s):  
Massimiliano Proietti ◽  
Joseph Ho ◽  
Federico Grasselli ◽  
Peter Barrow ◽  
Mehul Malik ◽  
...  
Keyword(s):  
Secure Communication ◽  
Key Agreement ◽  
Quantum Communication ◽  
Quantum Information Processing ◽  
Global Scale ◽  
Low Noise ◽  
Long Distance ◽  
Quantum Networks ◽  
High Brightness ◽  
Ghz States

Quantum networks will provide multinode entanglement enabling secure communication on a global scale. Traditional quantum communication protocols consume pair-wise entanglement, which is suboptimal for distributed tasks involving more than two users. Here, we demonstrate quantum conference key agreement, a cryptography protocol leveraging multipartite entanglement to efficiently create identical keys between N users with up to N-1 rate advantage in constrained networks. We distribute four-photon Greenberger-Horne-Zeilinger (GHZ) states, generated by high-brightness telecom photon-pair sources, over optical fiber with combined lengths of up to 50 km and then perform multiuser error correction and privacy amplification. Under finite-key analysis, we establish 1.5 × 106 bits of secure key, which are used to encrypt and securely share an image between four users in a conference transmission. Our work highlights a previously unexplored protocol tailored for multinode networks leveraging low-noise, long-distance transmission of GHZ states that will pave the way for future multiparty quantum information processing applications.

Sign in / Sign up

Export Citation Format

Share Document