Qubits Under Pressure: A Research-Level Quiz
From error-correction thresholds to quantum complexity, test how deep your understanding of quantum computing really goes.
- Texnologiya
- PhD
- Oʻrtacha
- Taʼlimiy
- 10 ta savol
- taxminan 5 daq.
- Har bir savoldan keyin izoh
Avval «Men robot emasman» belgisini qoʻying.
Bir-biringizga qarshi
Bolalar va qalbi yoshlar uchun
Savollarni koʻrish
Toʻgʻri javoblar koʻrsatilmaydi — oʻynaganingizda ular baribir syurpriz boʻlib qoladi.
1-savol
Which gate set is universal for quantum computation?
- Clifford gates plus the T gate
- Pauli gates plus the phase gate S
- Pauli gates plus Hadamard
- CNOT plus all Pauli gates
2-savol
Which complexity class is defined by bounded-error polynomial-time quantum computation?
- QMA
- BQP
- PostBQP
- QIP
3-savol
What are the parameters of the Steane code?
- [[15,1,3]]
- [[9,1,3]]
- [[7,1,3]]
- [[4,2,2]]
4-savol
What query complexity does Grover's algorithm achieve for unstructured search over N items?
- O(log N)
- O(N/2)
- O(N^(1/3))
- O(√N)
5-savol
In the surface code, what kind of error-correction threshold is often quoted under circuit-level depolarizing noise?
- About 1%
- About 0.001%
- About 10%
- About 25%
6-savol
The Gottesman–Knill theorem states that which circuits can be efficiently classically simulated?
- Circuits of matchgates only
- Stabilizer circuits
- Circuits with low T-count
- Circuits of depth one
7-savol
What subroutine gives Shor's algorithm its exponential speedup?
- Amplitude amplification
- Quantum walk on a graph
- Quantum Fourier transform for period finding
- Adiabatic evolution to a ground state
8-savol
Which result says no fault-tolerant code has a transversal universal gate set?
- Solovay–Kitaev theorem
- No-cloning theorem
- Threshold theorem
- Eastin–Knill theorem
9-savol
Why is the transmon less sensitive to charge noise than the Cooper-pair box?
- A large E_J/E_C ratio flattens its energy bands
- It uses no Josephson junction at all
- Its qubit states are spatially separated
- It operates far above the gap frequency
10-savol
What does the Solovay–Kitaev theorem guarantee for approximating a single-qubit unitary to precision ε?
- Exactly ε^(−1) gates from any set
- O(log^c(1/ε)) gates from a dense set
- Constant-depth circuits for every ε
- O(1/ε²) gates from Clifford gates
