  High-frequency trading (HFT) offers an excellent user case and a potential
killer application of the commercially available, first generation
quasi-quantum communication and computation technologies. To this end, we offer
here a simple but complete game-theoretic model of HFT as the famous two player
game, Prisoner's Dilemma. We explore the implementation of HFT as a game on the
(quasi) quantum cloud using the Eisert, Wilkens, and Lewenstein quantum
mediated communication protocol, and how this implementation can increase
transaction speed and improve the lot of the players in HFT. Using cooperative
game-theoretic reasoning, we also note that in the near future when the
internet is properly quantum, players will be able to achieve Pareto-optimality
in HFT as an instance of reinforced learning.
