Ultra-tight confinement of atoms in Rydberg quantum lattice

 Tight confinement of single sites in conventional lattices requires excessive laser intensity which in turn suppresses the coherence. This talk proposes a scheme for atomic lattice with sub-wavelength structure. The atom-light coupling combined with Rydberg interaction has opened a wide range of applications in quantum technology [1-11]. This presentation utilises the nonlinear optical response of the three-level Rydberg-dressed atoms to form ultra-narrow trapping potentials [12]. The lattice consists of a 3D array of ultra-narrow Lorentzian wells with sub-nanometer widths.The interaction-induced two-body resonance that forms the trapping potential [13], only occurs at a peculiar laser intensity, localizing the trap sites to ultra-narrow regions over the standing-wave driving field.  The tight confinement is desired for quantum logic operations with Rydberg-Fermi interaction [14-15] and  quantum walks [16].

 

References:

[1]M. Khazali, K. Mølmer, Phys. Rev. X 10, 021054 (2020).

[2]M. Khazali, Phys. Rev. A 98, 043836 (2018)

[3]M. Khazali, H. W. Lau, A. Humeniuk, C. Simon, Phys. Rev. A 94, 023408 (2016)

[4]M. Khazali, K. Heshami, C. Simon, Phys. Rev. A 91, 030301 (2015)

[5]M. Khazali, C. Murry, T. Pohl, Phys. Rev. Lett. 123, 113605 (2019)

[6]M. Khazali, K. Heshami, C. Simon J. Phys.  B, 50, 21 (2017)

[7]M. Khazali, Optics Express 31(9), 13970-13980 (2023)

[8]H Kaviani, et. al, New J. Phys. 15, 085029 (2013)

[9]M. Khazali, IJAP 10, 19 (2021)

[10]Khazali, Mohammadsadegh. "Applications of Atomic Ensembles for Photonic Quantum Information Processing and Fundamental Tests of Quantum Physics." Ph.D. thesis, University of Calgary (2016)

[11] Khazali, Mohammadsadegh. "Fast generation of multi-component cat states under the Strong Rydberg Dressing Regime." arXiv preprint arXiv:2312.11432 (2023)[12]Khazali, M. (2023). Subnanometer confinement and bundling of atoms in a Rydberg empowered optical lattice. arXiv preprint arXiv:2301.04450

[13]M Khazali, Phys. Rev. Research 3, L032033 (2021)

[14]Khazali, M., & Lechner, W. Communications Physics 6, 57 (2023)

[15]Khazali, M. (2022).  arXiv preprint arXiv:2204.08522

[16]M. Khazali, Quantum 6, 664 (2022)