Decoherence effects in the quantum qubit flip game using Markovian approximation

Authors:
Piotr Gawron;Dariusz Kurzyk;Łukasz Pawela
Affiliations:
Institute of Theoretical and Applied Informatics, Polish Academy of Sciences, Gliwice, Poland 44-100;Institute of Mathematics, Silesian University of Technology, Gliwice, Poland 44-100 and Institute of Theoretical and Applied Informatics, Polish Academy of Sciences, Gliwice, Poland 44-100;Institute of Theoretical and Applied Informatics, Polish Academy of Sciences, Gliwice, Poland 44-100
Venue:
Quantum Information Processing
Year:
2014

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Abstract

We are considering a quantum version of the penny flip game, whose implementation is influenced by the environment that causes decoherence of the system. In order to model the decoherence, we assume Markovian approximation of open quantum system dynamics. We focus our attention on the phase damping, amplitude damping and amplitude raising channels. Our results show that the Pauli strategy is no longer a Nash equilibrium under decoherence. We attempt to optimize the players' control pulses in the aforementioned setup to allow them to achieve higher probability of winning the game compared with the Pauli strategy.