Quantum cryptography requires having a photon gun that can, on demand, fire a single photon carrying 1
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Quantum cryptography requires having a photon gun that can, on demand, fire a single photon carrying 1 bit. In this problem, calculate how many photons a bit carries on a 250-Gbps fiber link. Assume that the length of a photon is equal to its wavelength, which for purposes of this problem, is 1 micron. The speed of light in fiber is 20 cm/nsec.
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At 250 Gbps a bit takes 4 10 12 sec to be transmitted With the speed of ...View the full answer
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