Improvement on Quantum Teleportation of Three and Four Qubit States Using Multi-Qubit Cluster States

2021 ◽  
Author(s):  
Vikram Verma ◽  
Nidhi Singh ◽  
Ravi S. Singh
Keyword(s):  
Quantum Teleportation ◽  
Cluster States ◽  
Qubit States

scholarly journals Experimental realization of controlled quantum teleportation of arbitrary qubit states via cluster states

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Abhijeet Kumar ◽  
Saeed Haddadi ◽  
Mohammad Reza Pourkarimi ◽  
Bikash K. Behera ◽  
Prasanta K. Panigrahi
Keyword(s):  
Quantum Teleportation ◽  
Controlled Quantum Teleportation ◽  
Cluster States ◽  
Experimental Realization ◽  
Qubit States

scholarly journals Optimal two-qubit states for quantum teleportation vis-à-vis state properties

2020 ◽  
Vol 101 (1) ◽  
Author(s):  
Arkaprabha Ghosal ◽  
Debarshi Das ◽  
Saptarshi Roy ◽  
Somshubhro Bandyopadhyay
Keyword(s):  
Quantum Teleportation ◽  
Qubit States

Symmetric and asymmetric cyclic controlled quantum teleportation via nine-qubit entangled state

2021 ◽  
pp. 2150249
Author(s):  
Vikram Verma
Keyword(s):  
Quantum Channel ◽  
Quantum Teleportation ◽  
Quantum States ◽  
Entangled State ◽  
Controlled Quantum Teleportation ◽  
Intrinsic Efficiency ◽  
Qubit States ◽  
Generalized Scheme

In this paper, by utilizing a nine-qubit entangled state as a quantum channel, we propose new schemes for symmetric and asymmetric cyclic controlled quantum teleportation (CYCQT). In our proposed schemes, four participants Alice, Bob, Charlie and David teleport their unknown quantum states cyclically among themselves with the help of a controller Eve. No participants can reconstruct the original states sent from the respective senders without the permission of the controller. Also, by considering same nine-qubit entangled state as a quantum channel, we propose a generalized scheme for CYCQT of multi-qubit states. In contrast to the previous CYCQT schemes involving three communicators and a controller, there are four communicators and a controller in the proposed schemes. Also, compared with previous CYCQT schemes, our proposed CYCQT schemes require less consumption of quantum resource and the intrinsic efficiency of the generalized scheme increases with the increase of number of qubits in the information states.

Cyclic quantum teleportation via GHZ-like state

2020 ◽  
pp. 2050333
Author(s):  
Vikram Verma
Keyword(s):  
Quantum Teleportation ◽  
The Other ◽  
Single Qubit ◽  
Bidirectional Quantum Teleportation ◽  
Other Hand ◽  
Qubit States

Following the work of Chen et al. [Quantum Inf. Process. 16, 201 (2017)] and Zhang [Mod. Phys. Lett. A 34, 1950290 (2019)], we propose a scheme for cyclic quantum teleportation (CYQT) in which three participants Alice, Bob and Charlie can teleport three arbitrary single-qubit information states cyclically among themselves by using GHZ-like states. Chen et al. and Zhang proposed schemes for CYQT and bidirectional quantum teleportation (BQT) involving three participants, respectively. In the scheme of Chen et al., the quantum teleportation (QT) can be realized successfully between any two participants without the help of third participants and in Zhang’s scheme, two unknown single-qubit states are teleported bidirectionally between two participants with the help of a third participant. On the other hand, in our proposed scheme, all the three participants are controller as well as sender and receiver. The teleportation processes Alice [Formula: see text] Bob, Bob [Formula: see text] Charlie and Charlie [Formula: see text] Alice are controlled by Charlie, Alice and Bob, respectively, and hence the CYQT could not be realized successfully without the cooperation of all three participants. If any one participant denies to cooperate with other two participants, then the CYQT cannot be realized successfully.

scholarly journals Generation and Application of Nested Entanglement in Matryoshka Quantum Resource-States

2020 ◽  
Author(s):  
Mrittunjoy Guha Majumdar
Keyword(s):  
Quantum Teleportation ◽  
Quantum Information Processing ◽  
Quantum States ◽  
Bell States ◽  
Controlled Teleportation ◽  
Multipartite Entanglement ◽  
Spin Interaction ◽  
State Generation ◽  
Qubit States ◽  
Resource State

Multipartite entanglement is a resource for application in disparate protocols, of computing, communication and cryptography. Nested entanglement provides resource-states for quantum information processing. In this paper, Matryoshka quantum resource-states, which contain nested entanglement patterns, has been studied. A novel scheme for the generation of such quantum states has been proposed using an anisotropic XY spin-spin interaction-based model. The application of the Matryoshka GHZ-Bell states for n-qubit teleportation is reviewed and an extension to more general Matryoshka ExhS-Bell states is posited. An example of Matryoshka ExhS-Bell states is given in the form of the genuinely entangled seven-qubit Xin-Wei Zha state. Generation, characterisation and application of this seven-qubit resource state in theoretical schemes for quantum teleportation of arbitrary one, two and three qubits states, bidirectional teleportation of arbitrary two qubit states and probabilistic circular controlled teleportation are presented.

ENCRYPTION-BASED NETWORKING QUANTUM TELEPORTATION WITH TRIPLET GREENBERGER–HORNE–ZEILINGER STATES

2010 ◽  
Vol 08 (05) ◽  
pp. 765-778 ◽  
Author(s):  
YING GUO ◽  
Guihua Zeng
Keyword(s):  
Quantum Channel ◽  
Quantum Key Distribution ◽  
Quantum Teleportation ◽  
Quantum Communication ◽  
Ghz State ◽  
The Novel ◽  
Bell Measurement ◽  
Intrinsic Efficiency ◽  
Almost All ◽  
Qubit States

An encryption-based networking quantum teleportation scheme is proposed for the secure quantum communication network based on the novel networking quantum key distribution (NQKD) with the Greenberger–Horne–Zeilinger (GHZ) state. The security is exactly guaranteed via the entanglement of the GHZ quantum system. In the process of quantum teleportation, the server Charlie prepares the GHZ states and the users exploit the four local unitary operations corresponding to the keys shared aforehand to encrypt/decrpt for the initial messages. One legal user can communicate with another on the network securely as they may perform a quantum privacy application on the encrypted quantum states transmitted in quantum channel. Its intrinsic efficiency is high as almost all the instances are useful and each GHZ state can carry two different encrypted single-qubit states. To reconstruct these transmitted messages, the users exploit Bell measurement and perform local operations with respect to the shared keys in NQKD, which will improve its security in a noise quantum channel.

Quantum Teleportation of Three and Four-Qubit State Using Multi-qubit Cluster States

2015 ◽  
Vol 55 (3) ◽  
pp. 1820-1823 ◽  
Author(s):  
Yuan-hua Li ◽  
Xiao-lan Li ◽  
Li-ping Nie ◽  
Ming-huang Sang
Keyword(s):  
Quantum Teleportation ◽  
Qubit State ◽  
Cluster States

scholarly journals Linear, Bidirectional and Circular Controlled Quantum Teleportation and Quantum State Sharing using a Seven Qubit Genuinely Entangled State

2020 ◽  
Author(s):  
Mrittunjoy Guha Majumdar
Keyword(s):  
Quantum State ◽  
Quantum Teleportation ◽  
Controlled Teleportation ◽  
Entangled State ◽  
Multipartite Entanglement ◽  
Quantum State Sharing ◽  
Controlled Quantum Teleportation ◽  
Qubit States ◽  
Resource State

Multipartite entanglement is a resource for application in disparate protocols, of computing, communication and cryptography. In this paper, generation, characterisation and application of a genuine genuinely entangled seven-qubit resource state is studied. Theoretical schemes for quantum teleportation of arbitrary one, two and three qubits states, bidirectional teleportation of arbitrary two qubit states and probabilistic circular controlled teleportation as well as three schemes for undertaking tripartite quantum state sharing are presented.

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