Cequan (Quantum Entanglement Communicator)

— Hypothetical Essays on Ybymarian Technology —

    1. Basic working principle

    The cequan (acronym from the Portuguese ‘comunicador por emaranhamento quântico’ that means ‘quantum entanglement communicator’) is a device that can send and receive data to/from its partner anywhere in the Universe instantly.

    The data is recorded on blades of an ‘Islands Quantum Composite.’ The islands are quantumly isolated from each other, and the quantum state of one can be changed without interfering with neighboring islands. If each island is a square nanometer in size, for example, it will be possible to entangle almost 10 petabits in a flat sheet measuring 4 inches on a side.

    The simplified diagram of a Cequan is as follows:

    It works as follows:

    The two transmit and receive triggers emit a signal at regular intervals; say, every second it sends a sequence of predefined bits. Receive triggers and start reading with a delay of, say, 0.5 (half) seconds. Thus, we have the sequence:

    Thus, the receive trigger reads the bit sequence with a half-second delay. Suppose it is a 4-bit sequence. A specific sequence must be signaled, which will indicate that the transmitter is making a call, say 1010. When receiving this sequence, the receiving module returns another predefined sequence, say 1100, to indicate to the transmitter that it is ready to receive data. The transmitter then sends another sequence of bits with the address in the data module where the message will begin. Then, the source trigger sends a signal to the data module to start changing the entangled quantum islands, which will reflect back to the receiver module. Data modules can be both receivers and transmitters.

    As long as the triggers are sending idle sequences, say, 0000, there will be no usable data communication. They are essential for keeping cequan modules synchronized. If this synchrony is lost, the modules become unusable.

    2. Data limitation

    An intrinsic peculiarity of Cequan is that there is a limit of data that can be transmitted and received, since, for each bit read, the entanglement is undone. Additionally, the Cequan has a maximum operational ‘lifetime’ because its triggers operate continuously, regardless of whether data is being transmitted. Assuming that they are made up of just one blade like the one in the example above, we will have 10 petabits. Sending one bit per millisecond (one thousand bits per second), the blade will take well over 300 thousand years to ‘empty.’ So the trigger’s lifetime shouldn’t be a problem.

    What really limits the use of Cequan is the number of bits in the data module. With 10 petabits, we can transmit around 50,000 hours of video in 4K, which may sound like a lot, but depending on where the module is used, it may be insufficient. Let us remember that containers must be transported to the location where they will operate at a limited speed. If they are too far away from each other, there will be no way to ‘recharge’ the modules, as the process will require them to be re-entangled.

    Each cequan module must be tangled with its pair in the same location. Once matted, the containers must be sent to their destination. Suppose that the container number, for example, TR10-23493A, is entangled with its pair, whose number is the same but with the ending ‘B’. Container ‘A’ is on Earth, and container ‘B’ is sent to Mars. Once there, up to 10 petabits of data can be transmitted and received instantly before the containers become ‘empty.’ However, they can be entangled again, which ‘carries’ another 10 petabits of data.

    Multiple blades can also be placed in the containers. As soon as one empties, it must be replaced by another. Suppose there are 100 blades in the container. We make 10 petabits x 100, resulting in 1 hexabit. A possible mechanism for changing blades is illustrated below.

    3. Extreme-condition operations

    Under normal conditions of stable gravity and relative speed between the containers, the difference in time for the triggers to emit and receive signals will be negligible. But at high speeds or gravity, the difference could be significant. For example, suppose the transmission trigger is traveling at half the speed of light. We have (the speed of light is about 300,000 km/s but was taken as 300 for simplicity):

    So, each pulse emitted in relation to the other module will have an interval variation of about 0.15 seconds. In this case, the triggers themselves can compensate, speeding up or slowing down the trigger pulse frequency by about 15%.

    If convenient, the modules can also synchronize with a master clock located, for example, on Earth, whose pulses are sent by radio signals. The module can compare with your internal clock to determine the relative variation in the passage of time.