Energy barrier to decoherence
Ari Mizel, Morgan W. Mitchell, Marvin L. Cohen · Physical Review A · 2001
We propose a ground-state approach to realizing quantum computers. This scheme is time-independent and inherently defends against decoherence by possessing an energy barrier to excitation. We prove that our time-independent qubits can perform the same algorithms as their time-dependent counterparts. Advantages and disadvantages of the time-independent approach are described. A model involving quantum dots is provided for illustration.