Measurement-driven navigation in many-body Hilbert space: Active-decision steering

Understand

The challenge of preparing a system in a designated state spans diverse facets of quantum mechanics.

• To complete this task of steering quantum states, one can employ quantum control through a sequence of generalized measurements which direct the system towards the target state.
• In an active version of this protocol, the obtained measurement readouts are used to adjust the protocol on-the-go.
• This enables a sped-up performance relative to the passive version of the protocol, where no active adjustments are included.