MobiusPizza
Platinum Member
I heard that quantum entanglement can link two particle's properties so that modifying 1 of the entangled particle would alter the property of the other entangled particle instantaneously, over even light-year distnces.
If that's the case, we can of course make a secure communication device over any distances even to the other side of the universe but still have instantaneous communication. Radio waves takes severam minutes to reach Mars from Earth. If we have a faster than light communication device it's much more convenient.
I know that Heisenburg's uncertainty principle prevent obtaining information from particles without altering their state. However, although the state is altered, I am sure that we can still extract the information we want. As follows:
Let there be a communication device that encodes information on a pair of entangled protons. The information is stored as 1 when spin is greater than certain value while 0 when it is lower then certain value.
Of course if you fire a photon at it to determine it's spin it might disrupt the original information. But I don't understand why you can't fire 2 photons at the same time to cancel the effect. If the threshold for distinguishing 0 and 1 is large enough small errors created would be acceptable.
Frankly speaking I am not sure what properties are shared by two entangled particles apart from spin. And whether the spin means the angular velocity or something arbitary.
If it is angular velocity, since a proton is an 3D object, why cannot we arrange the detector so it only reads the proton in say 90 degrees from its original spin of which the information was encoded to avoid disrupting the information?
If that's the case, we can of course make a secure communication device over any distances even to the other side of the universe but still have instantaneous communication. Radio waves takes severam minutes to reach Mars from Earth. If we have a faster than light communication device it's much more convenient.
I know that Heisenburg's uncertainty principle prevent obtaining information from particles without altering their state. However, although the state is altered, I am sure that we can still extract the information we want. As follows:
Let there be a communication device that encodes information on a pair of entangled protons. The information is stored as 1 when spin is greater than certain value while 0 when it is lower then certain value.
Of course if you fire a photon at it to determine it's spin it might disrupt the original information. But I don't understand why you can't fire 2 photons at the same time to cancel the effect. If the threshold for distinguishing 0 and 1 is large enough small errors created would be acceptable.
Frankly speaking I am not sure what properties are shared by two entangled particles apart from spin. And whether the spin means the angular velocity or something arbitary.
If it is angular velocity, since a proton is an 3D object, why cannot we arrange the detector so it only reads the proton in say 90 degrees from its original spin of which the information was encoded to avoid disrupting the information?
