Computer game with quantum optics/ information Is there a computer game using principles of quantum optics or quantum information?
By game I don't mean just a simulation or an interactive course, but something that can be played in an enjoyable way.
By 'principles' I mean actual rules, not just things bearing the same name or vaguely related.
As a reference, let me use Chromatron - it is a puzzle game using principles of geometrical optics and color mixing. (There are some non-physical or unrealistic elements, but most most of them - like mirrors, prisms, beamsplitters and filters - are based on real physics). 
 A: No there isn't, but I've always wanted to write one.
When I was an undergrad, I thought about designing quantum computer games. The idea was to make a simulation which would get people used to quantum stuff:
Here were the ideas I had back then (never implemented past undergraduate daydreams):


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*Spin-1/2 flight combat: You fly carrying a spinor, which rotates along with your changes in orientation. You have opponents that also carry a spinor. But you can only shoot an opponent when your two spinors are close to "the same" orientation. All the airplanes start off with the same spinor and the same orientation, so that really, you just have to learn to count the 360 rotations intuitively to know if you can blast your opponent or not.

*Quantum breakout: you have a wall and a paddle, and a photon source of variable wavelength where you control the wavelength and time of photon emissions. The ball is quantum, everything else is classical. The wall measures the particle at the moment the particle hits a brick, and the disappears (this is a collapse), and reflects the wave, and you have to reflect the wave as best you can with the paddle. The wavelength is short enough to make the motion nearly classical, but if you want to see where the ball is, you need to push your photon button, which will give you the location of the particle in a region less than the size of the paddle, but which will introduce enough dispersion to make hitting the ball more difficult. The idea here is to intuit the wavepacket motion from the limited measurements you can do, plus the disappearing bricks. I wanted to make the probability of hitting the ball very close to 100% if you know the approximate trajectory, but each measurement (by paddle, by brick, or by photon) introducing an uncertainty in the momentum. You don't see the ball without a photon, of course. The bottom of the screen is an absorbing boundary that ends the round.


I had variations on the above, of course, including a density-matrix version of quantum breakout that could be linked continuously to Brownian breakout, where the ball does a Brownian motion with drift. The spin-1/2 shooter can be restricted motion (like 2d), but then the goal of building up spinor rotation intuition is lost.
I also had strategy game ideas, I can't remember any of them, but the one below gives you the flavor:


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*Quantum Go: Opponents each take N successive turns placing black and white dots on a grid with 2N points until the grid is completely full. You then turn the two sets of dots into fermions which can hop to nearest neighbor sites occupied with the same color, and the winner is the one whose total energy is lowest.


I didn't have a good entanglement game, because entanglement is the one aspect of quantum mechanics we demonstrably cannot internalize completely, since it is a more efficient computer. But thinking some, I have this:


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*Entangled double pac-man: You control two pac-men which are entangled. You press two direction keys simultaneously twice, plus an optional "i" button, and the two pac-men will move in the two simultaneous directions in a 50/50 split, with interference in cases where branches come together. In order to be killed, your two pac men will have to be both simultaneously on top of a ghost. A ghost will measure the location of one pac man, revealing the other pac-man location, but the two continue to survive unless the other pac man is measured before you have a chance to split two entangled motions.


Hope this helps.
A: This gentleman wrote 2 games that involve quantum mechanics, not sure if its exactly what you are looking for.
http://www.engr.newpaltz.edu/~biswast/
A: There is indeed a hybrid "quantum computer game" called Quantum moves (playable on Windows, Mac, Linux, Andriod, iOS) which is the first gamified citizen science project of Science at home. Quantum moves pursues two different objectives. On the one hand, it is an attempt to popularization of quantum physics, but it is at the same time a research programme for which a numerically hard and expensive optimization problem occurring in quantum control was translated into a human-playable game. This allows to compare machine and human strategies to solve certain optimization problems.

A: There is Qcraft, which is a mod of the game minecraft. 
According to its developers, 

It lets players experiment with quantum behaviors inside Minecraft’s world, with new blocks that exhibit quantum entanglement, superposition, and observer dependency. 

A: I know a couple:


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*A guy called Piotr Migdał (who I hear has now left quantum physics) made this game called Quantum Game, which explores the dynamics of single photons in linear-optical networks.




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*Quantum Moves explores the motion of a massive quantum particle in 1D responding to a changing potential landscape, where you're tasked with optimizing the fraction of the population that reaches a given goal:

A: Not very related, but I added a special relativity shaders into my game:
http://dmytry.com/blog/?p=105
I might add some quantum mechanics in the next-next game project but it is very tentative. The issue is that quantum mechanics is fairly expensive to calculate. I like your breakout idea, though in reality nothing special seem to happen when e.g. photon hits photographic plate - it does just produce superposition of the states of plate for different points of impact... 
It'd be great to have some thread with advanced physics game ideas, I may pick some for implementation. But it has to be playable, which sets certain limits. I like the atomic orbitals; they look pretty and are not too expensive to visualize.
