Analysis of N-qubit perfectly controlled teleportation schemes from the controller's point of view

Abstract

We quantitatively analyze and evaluate the controller's power in $N$-qubit controlled teleportation schemes. We calculate the minimum control power required to ensure the controller's authority such that the teleportation fidelity without the controller's permission is no more than the classical bound. We revisit several typical controlled teleportation schemes from the controller's point of view and evaluate the control power in these schemes. We find that for teleporting arbitrary N-qubit states, each controller should control at least N bits of useful information to ensure his/her authority over the protocol. We also discuss the general rules that must be satisfied by controlled teleportation schemes to ensure both teleportation fidelity and control power.

5 pages

References in corpus (23)

• Experimental quantum teleportation
• Quantum secret sharing
• Experimental Realization of Teleporting an Unknown Pure Quantum State via Dual Classical and Einstein-Podolski-Rosen Channels
• A Two-Step Quantum Direct Communication Protocol Using Einstein-Podolsky-Rosen Pair Block
• Theoretical efficient high capacity Quantum Key Distribution Scheme
• Efficient Multi-Party Quantum Secret Sharing Schemes
• A Multiparticle Generalization of Entanglement Swapping
• Quantum Teleportation with a Complete Bell State Measurement
• Long distance quantum teleportation of qubits from photons at 1300 nm to photons at 1550 nm wavelength
• Controlled order rearrangement encryption for quantum key distribution
• Symmetric multiparty-controlled teleportation of an arbitrary two-particle entanglement
• Efficient many-party controlled teleportation of multi-qubit quantum information via entanglement
• Efficient symmetric multiparty quantum state sharing of an arbitrary m-qubit state
• Quantum Cryptographic Network based on Quantum Memories
• Local environment can enhance fidelity of quantum teleportation
• Hyper-parallel photonic quantum computation with coupled quantum dots
• Multipartite entanglement for entanglement teleportation
• Optimal state estimation for d-dimensional quantum systems
• Optimal Controlled Teleportation
• Controlled Teleportation of an Arbitrary Multi-Qudit State in a General Form with d-Dimensional Greenberger-Horne-Zeilinger States
• Control power in perfect controlled teleportation via partially entangled channels
• A scheme for the teleportation of multiqubit quantum information via the control of many agents in a network
• Optimal generalized quantum measurements for arbitrary spin systems

Cited by in corpus (8)

• Quantum teleportation of shared quantum secret
• Minimal control power of the controlled teleportation
• Generalization of port-based teleportation and controlled teleportation capability
• Analysis of control power in controlled remote state preparation schemes
• Minimal control power of controlled dense coding and genuine tripartite entanglement
• Controlled remote implementation of operations via graph states
• Transmission losses in optical qubits for controlled teleportation
• Flying-cat parity checks for quantum error correction