Deterministic quantum state transfer of atoms in a random magnetic field
Department of Physics and QSO – Centre for Quantum Science, University of Otago, Dunedin, New Zealand
2 The Dodd Walls Centre for Photonic and Quantum Technologies, Dunedin, New Zealand
Accepted: 18 April 2019
Published online: 6 August 2019
We propose a method for transferring atoms to a target quantum state for a multilevel quantum system with sequentially increasing, but otherwise unknown, energy splitting. This is achieved with a feedback algorithm that processes off-resonant optical measurements of state populations during adiabatic rapid passage in real time. As a demonstration, we reliably perform the state transfer |F = 2,mF = 2〉 → |1,1〉 → |2,1〉 for a sample of ultracold 87Rb in the presence of a random external magnetic field.
Key words: Cold Matter and Quantum Gas
© EDP Sciences / Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2019