Hamiltonian tomography in an access-limited setting without state initialization
arXiv:0812.3510 · doi:10.1103/PhysRevLett.102.187203
Abstract
We propose a scheme for the determination of the coupling parameters in a chain of interacting spins. This requires only time-resolved measurements over a single particle, simple data post-processing and no state initialization or prior knowledge of the state of the chain. The protocol fits well into the context of quantum-dynamics characterization and is efficient even when the spin-chain is affected by general dissipative and dephasing channels. We illustrate the performance of the scheme by analyzing explicit examples and discuss possible extensions.
4 pages, 2 figures, RevTeX4
References in corpus (7)
- Perfect state transfer on a spin-chain without state initialization
- Coupling strength estimation for spin chains despite restricted access
- Identifying an Experimental Two-State Hamiltonian to Arbitrary Accuracy
- Identifying a Two-State Hamiltonian in the Presence of Decoherence
- Nested entangled states for distributed quantum channels
- Information-flux approach to multiple-spin dynamics
- A deeper insight into quantum state transfer from an information flux viewpoint