Local cloning of genuinely entangled states of three qubits

Journal Article · Sat Dec 15 00:00:00 EST 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.062312· OSTI ID:21140627

Choudhary, Sujit K; Kar, Guruprasad; Rahaman, Ramij; Roy, Anirban ^[1]; Kunkri, Samir ^[2]

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1. Physics and Applied Mathematics Unit, Indian statistical Institute, 203, B. T. Road, Kolkata 700 108 (India)
2. Mahadevananda Mahavidyalaya, Monirampore, Barrackpore, North 24 Parganas, 700120 (India)

We discuss the (im)possibility of the exact cloning of orthogonal but genuinely entangled three qubit states aided with entangled ancilla under local operation and classical communication. Whereas any two orthogonal Greenberger-Horne-Zeilinger (GHZ) states taken from the canonical GHZ basis can be cloned with the help of a known GHZ state, surprisingly we find that no two W states can be cloned by using any known three qubit (possibly entangled) state as a blank copy.

• OSTI ID: 21140627
• Journal Information: Physical Review. A, Vol. 76, Issue 6; Other Information: DOI: 10.1103/PhysRevA.76.062312; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

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