India may look into quantum cash technologies to bring an end to counterfeiting by Pakistani and Chinese intelligence agencies
Tanvir Singh
Jun. 7, 2012

India plans to use US technologies and look into quantum cash technologies to stop counterfeiting bu Pakistani and Chinese intelligence agencies.

The concept of quantum money is as follows. Indian Reserve Bank (Central Bank of India) will somehow insert photons, the quantum particles of light, into each Rupee note. The issuing bank could then create a kind of minuscule secret watermark by polarizing the photons in a special way.

To validate the Rupee note later, the bank would check a single attribute of each photon in the Rupee note. It can be the vertical or horizontal polarization levels, leaving all other attributes unmeasured. The Bank could then verify the note’s authenticity by checking its records from a central Indian currency database for how the photons were set originally for this particular bill, which the bank could look up using the bill’s printed serial number. Each bank teller will have a measurement device. They will also have access to the central Indian currency database through a private secured network based on TCPIP or similar Internet technologies.



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