Bad Qubits — Learn Quantum by Doing

Multiple choice

In a topologically ordered system with a uniform energy gap Delta, the lesson states that the probability of real (thermal) excitation of a stray anyon is suppressed by which factor (k_B is Boltzmann's constant, T the temperature)?

e^(-Delta / (k_B T))
e^(+Delta / (k_B T))
(k_B T / Delta)^2
Delta / (k_B T)