IBM Quantum Topology — ibm_hanoi (5-qubit segment)
SUPERCONDUCTING
Grover target |q₂q₁q₀⟩ = |110⟩
MSB
q[2]=1
q[1]=1
q[0]=0
LSB
✓ CORRECT RESULT
Attack CNOTs
0
q[3]↔q[4] pairs/layer
Grover Output Distribution — |q₂q₁q₀⟩
TARGET: |110⟩
P(correct)
70.0%
TVD (0=ideal · 0.5=noise)
0.000
Attack strength
0%
Shots / sec
8192
No attack baseline
Under attack
With active defense
Attack Controls
0 DEFENSES
Scenario Preset
Attack Intensity (CNOT pairs)
0%
Simulation Speed
Active Defenses
Qubit State (Bloch Vector)
Red = under attack |
Green = with defense
Vector length = coherence. Zero = destroyed.
Vector length = coherence. Zero = destroyed.
q[0] · bit 0 = 0
|BV|=1.00
q[1] · bit 1 = 1
|BV|=1.00
q[2] · bit 2 = 1 ⚠
|BV|=1.00
q[2] COHERENCE RECOVERY
No defense
100%
Defense on
0%
Reference
Harper et al. (2025)
arXiv:2402.02753v2
U. Melbourne / CSIRO
Validated: ibm_hanoi (27q)
Attack boundary: CX(12,13)
CX error: 3.0% · T₂(q13)=21.5µs
arXiv:2402.02753v2
U. Melbourne / CSIRO
Validated: ibm_hanoi (27q)
Attack boundary: CX(12,13)
CX error: 3.0% · T₂(q13)=21.5µs
Real Hardware Evidence
Field validation — 3 backends · 8192 shots each
Independent of simulation controls.
Independent of simulation controls.