Materials modelling has established itself as an essential analysis not only to study the insight of complex physical phenomena appearing in the soft or condensed matter but also to realize the emerging trend of 'reverse engineering' as a keystone for technological innovations. The cover photo of this September 2019 issue describes the bio interaction between graphene and enzyme protein for bioelectronics applicable in battery, fuel cell and biosensing applications and dedicated to celebrating the 6th anniversary of Nobel Prize in Chemistry on “Multiscale models for complex chemical systems”.
Generation of entanglement in spin states of Rydberg atoms by chirped optical pulses
Svetlana A. Malinovskaya*, Elliot Pachniak
Department of Physics, Stevens Institute of Technology, Castle Point on Hudson, Hoboken 07030, New Jersey, USA
Adv. Mater. Lett., 2019, 10 (9), pp 619-621
Publication Date (Web): Mar 01, 2019
Copyright © 2019 VBRI Press
Quantum entanglement is a crucial resource in many quantum information and quantum communication tasks. In this work, we present a quantum control methodology to create entangled states of two basic classes, the W and the GHZ. A chain of 87Rb atoms in an optical lattice is considered interacting with laser pulses to induce two-photon excitations to Rydberg states having a specific magnetic quantum number. Generation of the W and GHZ three-atomic states is demonstrated via the mechanism of the two-photon adiabatic passage in collective states implying the overlapping chirped pulses and the interplay of the Rabi frequency with the one-photon detuning and the strength of the Rydberg-Rydberg interactions. © VBRI Press.
Many-body physics, entangled states, Rydberg atom, quantum control, chirped laser pulse.