Broadcasting of three-qubit entanglement via local copying and entanglement swapping

Journal Article · Fri Sep 15 00:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.032323· OSTI ID:20857676

Adhikari, Satyabrata; Choudhury, B S ^[1]

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1. Department of Mathematics, Bengal Engineering and Science University, Howrah-711103, West Bengal (India)

In this work, we investigate the problem of a secretly broadcasting of a three-qubit entangled state between two distant partners. The interesting feature of this problem is that starting from two-particle entangle states shared between two distant partners we find that the action of a local cloner on the qubits and the measurement on the machine state vector generates three-qubit entanglement between them. The broadcasting of entanglement is made secret by sending the measurement result secretly using cryptographic scheme based on orthogonal states. Further we show that this idea can be extended to generate three-particle entangled states between three distant partners.

• OSTI ID: 20857676
• Journal Information: Physical Review. A, Vol. 74, Issue 3; Other Information: DOI: 10.1103/PhysRevA.74.032323; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ENERGY LEVELS
INFORMATION THEORY
QUANTUM COMPUTERS
QUANTUM CRYPTOGRAPHY
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
QUANTUM NUMBERS
QUBITS
VECTORS