Energy protection arguments fail in the interaction picture

Abstract

Spin Hamiltonians with degenerate ground states are one potential system for the storage of quantum information at low temperatures. Trapped ions can be used to simulate the dynamics of these Hamiltonians, but the coherence-preserving properties will be lost. This illustrates that a quantum simulation performed in an interaction frame will not thermalize with its environment.

7 pages, minor changes to figures and text

References in corpus (1)

• Topologically decoherence-protected qubits with trapped ions

Cited by in corpus (2)

• Measurement-based quantum computer in the gapped ground state of a two-body Hamiltonian
• Laserless trapped-ion quantum simulations without spontaneous scattering using microtrap arrays