5. Quantum Hardware

Photonicqubits — Quiz

Test your understanding of photonicqubits with 5 practice questions.

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Practice Questions

Question 1

In single-rail encoding of photonic qubits, how are the logical states |0⟩ and |1⟩ represented in the Fock basis?

Question 2

In scattershot boson sampling, how are input photons prepared compared to standard boson sampling?

Question 3

The computational hardness of boson sampling is rooted in the difficulty of computing which function of the interferometer's submatrix?

Question 4

In a Mach–Zehnder interferometer with ideal 50:50 beam splitters and a relative phase shift $\Delta\phi=\pi/2$ applied in one arm, what is the probability $P$ of detecting a photon at the constructive output?

Question 5

In a Hong–Ou–Mandel experiment with photons of visibility $V=0.90$ on a 50:50 beam splitter, what is the expected probability $P_c$ of coincidence detection at the outputs?