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A cloned qutrit and its utility in information processing tasks

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Abstract

We analyze the efficacy of an output as a resource from a universal quantum cloning machine in information processing tasks such as teleportation and dense coding. For this, we have considered the \(3 \otimes 3\) dimensional systems. The output states are found to be NPT states for a certain range of machine parameters. Using the output state as an entangled resource, we also study the optimal fidelities of teleportation and capacities of dense coding protocols with respect to the machine parameters and make some interesting observations. Our work is motivated from the fact that the cloning output can be used as a resource in quantum information processing and adds a valuable dimension to the applications of cloning machines.

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Authors and Affiliations

  1. Techno India, Salt Lake City, Kolkata, 91, India

    Sovik Roy

  2. Indian Institute of Technology, Jodhpur, 11, Rajasthan, India

    Atul Kumar & Satyabrata Adhikari

  3. Heritage Institute of Technology, Kolkata, 107, India

    Nirman Ganguly

  4. S. N. Bose National Centre for Basic Sciences, Salt Lake City, Kolkata, 98, India

    Sovik Roy, Nirman Ganguly & A. S. Majumdar

Authors
  1. Sovik Roy
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  2. Nirman Ganguly
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  3. Atul Kumar
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  4. Satyabrata Adhikari
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  5. A. S. Majumdar
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Correspondence to Atul Kumar.

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Roy, S., Ganguly, N., Kumar, A. et al. A cloned qutrit and its utility in information processing tasks. Quantum Inf Process 13, 629–638 (2014). https://doi.org/10.1007/s11128-013-0678-6

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  • DOI: https://doi.org/10.1007/s11128-013-0678-6

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