Try Your Hand

Solutions to these exercises are given in ​Quantum Cryptography Solutions​.

  1. Alice wants to send a message to Bob and they agree to use the BB84 mechanism to set up a secret key to encrypt and decrypt her message.

    Suppose Alice sets up her circuit as shown in the following figure:

    images/quantum_cryptography/Alice_7_Qubit_Sender_Circuit.png

    1. Decide whether the following statements are True or False:

      1. The random key is 000000.

      2. The secret key is 0110111.

      3. The random key is:

        images/_pragprog/svg-block-373.png

      4. The random key is 0110111.

      5. Assuming that the first and last qubits are used for establishing an enhanced level ...

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