Year: 2005
Type: article
Abstract: Using a resonant interaction between atoms and the field in a high-quality cavity, we show how to realize quantum random walks as proposed by Aharonov et al. [Phys. Rev. A 48, 1687 (1993)]. The atoms are driven strongly by a classical field. Under conditions of strong driving we could realize an effective interaction of the form $i{S}^{x}(a\ensuremath{-}{a}^{\ifmmode\dagger\else\textdagger\fi{}})$ in terms of the spin operator associated with the two-level atom and the field operators. This effective interaction generates displacement in the field's wave function depending on the state of the two-level atom. Measurements of the state of the two-level atom would then generate an effective state of the field. Using a homodyne technique, the state of the quantum random walker can be monitored.
Source: Physical Review A
Authors: G. S. Agarwal, P. K. Pathak
Institution: Oklahoma State University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Awards: Structure-guided redesign of monoclonal antibodies targeting conserved filovirus epitopes, G3279824957, QnTM: Manipulation of Quantum Entanglement & Decoherence in Neutral Atoms and Quantum Dots, G5302267500, Consortium for Immunotherapeutics Against Viral Hemorrhagic Fevers, Evolution of anti-filovirus B cell responses and mechanisms of protection
OpenAlex ID: W2964188127