Transmission-based tomography for spin qubits
Abstract
We consider a system of static spin qubits embedded in a one-dimensional spin-coherent channel and develop a scheme to readout the state of one and two qubits separately. We use unpolarized flying qubits for this purpose that scatter off from the static qubits due to localized Heisenberg exchange interaction. Analyzing the transmission coefficient as a function of density matrix elements along with additional unitary gates we reconstruct the state of static qubits.
- Publication:
-
Physical Review A
- Pub Date:
- May 2021
- DOI:
- 10.1103/PhysRevA.103.052430
- arXiv:
- arXiv:2101.09544
- Bibcode:
- 2021PhRvA.103e2430S
- Keywords:
-
- Quantum Physics;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- comments on the paper are welcome