Temperature-independent teleportation of qubits in Davies environments

A quantum channel teleporting qubits from Alice to Bob is considered in which the bipartite resource state shared by Alice and Bob is affected by bilocal thermal noise treated in rigorous Davis approximation. Specific conditions are identified where the fidelity of the teleportation channel can be either independent of temperature or even enhanced by the temperature of the environment

Quantum two player game in thermal environment

A two-player quantum game is considered in the presence of thermal decoherence. It is shown how the thermal environment modeled in terms of rigorous Davies approach affects payoffs of the players. The conditions for either beneficial or pernicious effect of decoherence are identified. The general considerations are exemplified by the quantum version of Prisoner Dilemm

Payoff differences Eq (29) as a function of temperature <i>p</i> calculated at a time <i>t</i> = 2 for Alice–Bob strategy profiles (

<p>The thermal Davies environment (with <i>G</i> = 1) influences only one player (either Bob or Alice) and <i>A</i> = 2.</p

Payoff differences Eq (29) as a function of <i>A</i> calculated at time <i>t</i> = 2 for Alice–Bob strategy profiles (

<p>The thermal Davies environment (with <i>G</i> = 1) influences only one player (either Bob or Alice) and <i>p</i> = 0.</p