Quantum-state tomography is a crucial ingredient in quantum-computations and engineering. Measurement of state fidelity is fundamental for determination of the performance of various quantum protocols and their specific implementations. Tomography can be also used in error correction protocols [1]. Principally, tomography of two types of quantum objects needs to be performed. The first measurements can be done over photons which are good transmitters of quantum information. The other on “atomic” systems, which offers the ability to manipulate the information. Atomic gasses are among the most promises candidates for quantum-information processing and storage. Typically, this task is performed in ultra-cold gasses [2], where various relaxation processes are mitigated. At the same time, hot atomic vapours also offer various advantages, like the simplicity of ensemble preparing (lack of cooling apparatus or fact that in paraffin-coated cells all interactions are averaged over the volume of the cell).

© 2019 The Author(s)

PDF Article
More Like This
Demonstration of an Atomic Frequency Comb Quantum Memory Using Velocity-Selective Pumping in Warm Alkali Vapour

T. M. Hird, D. J. Main, S. Gao, E. Oguz, D. J. Saunders, I. A. Walmsley, and P. M. Ledingham
FW4C.5 CLEO: QELS_Fundamental Science (CLEO_QELS) 2020

Engineering and tomography of quantum states of motion of a trapped atom

D. Leibfried, D. M. Meekhof, C. Monroe, B. E. King, W. M. Itano, and D. J. Wineland
QME4 Quantum Electronics and Laser Science Conference (QELS) 1997

Atom-like quantum emitters embedded in photonic hot spots

Hamidreza Siampour, Ou Wang, Valery Davydov, Viatcheslav Agafonov, Fedor Jelezko, and Sergey Bozhevolnyi
56 Diamond Photonics - Physics, Technologies and Applications (DP) 2019


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access Optica Member Subscription