Patent ID: 11894877
Assignee: VERIQLOUD
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A configuration method for a processing device (1), the processing device (1) comprising i) an input interface (2) configured to receive photons having first quantum states, ii) an encoder (3) configured to generate a photon having a first fixed quantum state from a received electrical signal, iii) a transformer (4) configured to transform said first quantum state of a photon into a second quantum state, iv) a decoder (5) configured to transform said second quantum state of a received photon into an electrical signal, and v) an output interface (6) configured to deliver photons having second quantum states and to be transmitted, said processing device (1) also comprising a switch (7) comprising at least three inputs connected respectively to outputs of said input interface (2), encoder (3) and transformer (4), and at least three outputs connected respectively to inputs of said output interface (6), decoder (5) and transformer (4), and selectively coupling at least one of its inputs to one of its outputs according to a received command,
the method comprising a step in which the processing device (1) is configured so that:
either the output of said encoder (3) is coupled to the input of said transformer (4) and the output thereof (4) is coupled to the input of said decoder (5), for it to perform a procedure of prepare and measure type,
or the output of said encoder (3) is coupled to the input of said transformer (4) and the output thereof (4) is coupled to the input of said output interface (6), for it to perform a procedure of prepare and send type,
or the output of said input interface (2) is coupled to the input of said transformer (4) and the output thereof (4) is coupled to the input of said decoder (5), for it to perform a procedure of receive and measure type,
or the output of said input interface (2) is coupled to the input of said transformer (4) and the output thereof (4) is coupled to the input of said output interface (6), for it to perform a procedure of receive and send type.