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An Analysis of the Quantum Penny Flip Game using Geometric Algebra

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arxiv 0902.4296 v1 pith:TIYXD7LA submitted 2009-02-25 quant-ph

An Analysis of the Quantum Penny Flip Game using Geometric Algebra

classification quant-ph
keywords algebragamegeometricquantumwinningflippennystrategy
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We analyze the quantum penny flip game using geometric algebra and so determine all possible unitary transformations which enable the player Q to implement a winning strategy. Geometric algebra provides a clear visual picture of the quantum game and its strategies, as well as providing a simple and direct derivation of the winning transformation, which we demonstrate can be parametrized by two angles. For comparison we derive the same general winning strategy by conventional means using density matrices.

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