7. Design a section of quantum computer that measures the Bell states on a pair of qubits. Loo) l11)

Database System Concepts
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Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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7. Design a section of quantum computer that measures the Bell states on a pair of qubits.
That is, the output should be |00), |01), |10), |11) depending on whether the input was
|44), |P-), |V+), |V -).
8. Using only CNOT gates, design a quantum circuit for two qubits that leaves the state
|00) unaffected and does |01) → |11) → |10) → |01).
9. Construct a quantum circuit to add two two-bit numbers r and y modulo 4. That is, the
circuit should do |x, y) → |x, x + y mod 4).
Transcribed Image Text:7. Design a section of quantum computer that measures the Bell states on a pair of qubits. That is, the output should be |00), |01), |10), |11) depending on whether the input was |44), |P-), |V+), |V -). 8. Using only CNOT gates, design a quantum circuit for two qubits that leaves the state |00) unaffected and does |01) → |11) → |10) → |01). 9. Construct a quantum circuit to add two two-bit numbers r and y modulo 4. That is, the circuit should do |x, y) → |x, x + y mod 4).
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