7-11 July 2014
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=16&confId=34"><font color=#0000ff>SAIP2014 Proceedings published on 17 April 2015</font></a>

A Monte Carlo Simulation of a Noisy Quantum Channel with Memory

8 Jul 2014, 17:10
1h 50m
D Ring ground level

D Ring ground level

Board: G.427
Poster Presentation Track G - Theoretical and Computational Physics Poster1


Dr Ismail Akhalwaya (University of Johannesburg)

Main supervisor (name and email)<br>and his / her institution

Francesco Petruccione, petruccione@ukzn.ac.za, Quantum Research Group, School of Physics, University of KwaZulu-Natal

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Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

The classical capacity of quantum channels is well understood for channels with uncorrelated noise. For the case of correlated noise, however, there are still open questions. We calculate the classical capacity of a forgetful channel constructed by Markov switching between two depolarizing channels. Techniques have previously been applied to approximate the output entropy of this channel and thus its capacity. In this paper, we use a Metropolis-Hastings Monte Carlo approach to numerically calculate the entropy. The algorithm is implemented in parallel and its performance is studied and optimized. The effects of memory on the capacity is explored and previous results are confirmed to higher precision.

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Primary author

Dr Ismail Akhalwaya (University of Johannesburg)


Prof. Francesco Petruccione (UKZN) Dr Mervlyn Moodley (University of KwaZulu-Natal)

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