Article
Physics, Multidisciplinary
Michael Peper, Johannes Deiglmayr
Summary: In this study, homonuclear Cs-2, K-2, and heteronuclear CsK long-range Rydberg molecules were formed in a dual-species magneto-optical trap for K-39 and Cs-133 by one-photon UV photoassociation. The different ground-state-density dependence of homo- and heteronuclear photoassociation rates and the detection of stable molecular ions provided clarification. Bound-bound millimeter-wave spectroscopy of long-range Rydberg molecules was utilized to access molecular states not accessible by one-photon photoassociation, serving as a benchmark for the development of theoretical models.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Huaizhi Wu, Xin-Yu Lin, Zong-Xing Ding, Shi-Biao Zheng, Igor Lesanovsky, Weibin Li
Summary: We propose a Rydberg molecule dressing scheme that can generate strong and long-range interactions at selective distances. By coupling ground-state atoms off-resonantly to two interacting Rydberg atoms on an attractive molecular curve, we can control the ratio of dressed interaction to dephasing rate at large atomic separations. This scheme enables the fast generation of spin squeezing and provides a new route for studying complex many-body dynamics and realizing quantum information processing with non-convex long-range interactions.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2022)
Article
Physics, Applied
Peter K. Elgee, Joshua C. Hill, Kermit-James E. LeBlanc, Gabriel D. Ko, Paul D. Kunz, David H. Meyer, Kevin C. Cox
Summary: Rydberg electric field sensors provide sensitivity over a broad range of the electromagnetic spectrum but lack sensitivity in the ultra-high frequency and below bands. This study presents a resonant Rydberg electric field sensor operating in the UHF band using a dual-optical dual-microwave spectroscopy scheme, which improves the sensitivity in this range. The effectiveness of the sensing scheme is demonstrated by measuring Sirius XM satellite radio outside the laboratory.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Daniel J. Bosworth, Frederic Hummel, Peter Schmelcher
Summary: We show that the recently observed long-range ion-Rydberg molecules can be split into two families with unique electronic structures resulting from the ion-induced admixture of different Rydberg nP states. We predict that these molecular states can bind additional ground-state atoms, forming charged ultralong-range Rydberg molecules with similar binding energies as nonpolar ULRMs. This has been demonstrated by considering a Rydberg atom interacting with a single ground-state atom and an ion, breaking the system's symmetry and leading to mixing between decoupled states.
Article
Physics, Multidisciplinary
Xiao-Jun Zhang, Huan Chang, Jia-Yao Huo, Jin-Hui Wu
Summary: This article investigates the four-wave mixing (FWM) nonlinearity in an ensemble of cold Rydberg atoms. It shows the existence of both local and much larger nonlocal nonlinearity, which can be further enhanced by increasing the atomic density. These findings are of great significance for applications in quantum information processing involving FWM nonlinearity, such as the generation of squeezed or entangled states.
NEW JOURNAL OF PHYSICS
(2022)
Article
Physics, Multidisciplinary
Jinjin Du, Thibault Vogt, Wenhui Li
Summary: We introduce well-separated 87Rb+ ions into an atomic ensemble and achieve single-shot imaging of individual ions with an exposure time of 1 mu s using homodyne detection. The ion detection fidelity is (80 +/- 5)% as analyzed from the absorption spots in the acquired images. These in situ images provide a direct visualization of ion-Rydberg interaction blockade and reveal spatial correlations between Rydberg excitations. The capability of imaging individual ions in a single shot is important for studying collisional dynamics in hybrid ion-atom systems and for using ions as probes in quantum gas measurements.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
Karen Lozano-Mendez, Alejandro H. Casares, Santiago F. Caballero-Benitez
Summary: Quantum matter at ultralow temperatures provides a platform for studying desired properties in strongly correlated systems. Using high-Q cavities and optical lattices, we investigate the effects of cavity-mediated long-range magnetic interactions and the presence of ultra-cold matter. We find that global interactions modify the magnetic character of the system and introduce competition. This leads to the emergence of antiferromagnetic correlated bosonic matter beyond what is typically observed in nature.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Meungho Seo, In Hwan Do, Hansuek Lee, Dai-Hyuk Yu, Sangwon Seo, Hyun-Gue Hong, Jeong Ho Han, Sang Eon Park, Sang-Bum Lee, Taeg Yong Kwon, Jongchul Mun, Jae Hoon Lee
Summary: In this report, a method of imaging atoms during transport using a moving optical dipole trap is introduced. The in-situ characterization of atom transport is demonstrated using a moving-frame imaging system. Precise positioning of atoms near tapered fibers is also tested.
Article
Quantum Science & Technology
G. Pelegri, A. J. Daley, J. D. Pritchard
Summary: The study proposes a protocol for implementing high-fidelity multiqubit controlled phase gates on neutral atom qubits. The results show that high-fidelity quantum gates can be achieved in a relatively short time period using this protocol. This has potential implications and applications for future developments.
QUANTUM SCIENCE AND TECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Rosario Gonzalez-Ferez, Janine Shertzer, H. R. Sadeghpour
Summary: It is predicted that ultralong-range Rydberg bimolecules will form in collisions between polar molecules in cold and ultracold settings, with high energy and permanent electric dipole moments. The Rydberg bimolecules have rotational constants in the MHz range, allowing for microwave spectroscopy and achieving considerable orientation. These molecules hold promise for studying a special class of long-range bimolecular interactions.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
H. Rivera-Rodriguez, R. Jauregui
Summary: This study explores the approximate and compact expressions of the electrostatic potential that determine the chemistry of trilobite and butterfly LRRM, indicating that even the prolate spheroidal monopole term can be used to describe general features of the potential at short distances. It is also demonstrated that the convergence of the multipole prolate spheroidal expansion is faster than that of its spherical analogue even at long separations allowing a perturbative description of the intermolecular interaction between two LRRM.
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2021)
Article
Physics, Multidisciplinary
E. Stourm, M. Lepers, J. Robert, S. Nic Chormaic, K. Molmer, E. Brion
Summary: We investigate the van der Waals interaction potential between two rubidium atoms in S or P Rydberg states near an optical nanofibre, considering their separation along the fibre axis, distance to the fibre axis, and relative azimuthal angle. By comparing different calculation methods, we identify the main couplings that contribute to the potential and how they are affected by the presence of the nanofibre. We demonstrate the formation of an interaction potential well for P states near the nanofibre and highlight the importance of our work for Rydberg atom-nanofibre quantum interfaces and devices.
NEW JOURNAL OF PHYSICS
(2023)
Article
Engineering, Environmental
Penghui Shao, Junjun Pei, Huan Tang, Shuiping Yu, Liming Yang, Hui Shi, Kai Yu, Kai Zhang, Xubiao Luo
Summary: The discarded cigarette butt derived porous carbon (AC-800) shows high adsorption capacity and rapid reaction rate for BPA, with graphitic defect playing a crucial role in improving adsorptivity. Long-range hydrophobic interaction synergized with short-range dispersion force make a substantial contribution to BPA adsorption on AC-800.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Physics, Multidisciplinary
Y. Mei, Y. Li, H. Nguyen, P. R. Berman, A. Kuzmich
Summary: Researchers have created a special two-level system in an ensemble of several hundred atoms and observed oscillations between the ground state and collective Rydberg state. They have also obtained the light shifts of the qubits using interference techniques and derived an effective two-level model that agrees well with their observations.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Elmer Suarez, Philip Wolf, Patrizia Weiss, Sebastian Slama
Summary: This study reports on the observation and explanation of superradiance decoherence caused by long-range dipole-dipole interactions between Rydberg atoms, which is confirmed through real-time monitoring and measurement of cavity transmission.
Article
Optics
Jingshan Han, Thibault Vogt, Manukumara Manjappa, Ruixiang Guo, Martin Kiffner, Wenhui Li
Article
Optics
Martin Kiffner, Davide Ceresoli, Wenhui Li, Dieter Jaksch
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2016)
Article
Optics
Rainer Dumke, Zehuang Lu, John Close, Nick Robins, Antoine Weis, Manas Mukherjee, Gerhard Birkl, Christoph Hufnagel, Luigi Amico, Malcolm G. Boshier, Kai Dieckmann, Wenhui Li, Thomas C. Killian
Article
Optics
Thibault Vogt, Christian Gross, T. F. Gallagher, Wenhui Li
Article
Physics, Multidisciplinary
Jingshan Han, Thibault Vogt, Christian Gross, Dieter Jaksch, Martin Kiffner, Wenhui Li
PHYSICAL REVIEW LETTERS
(2018)
Article
Optics
Mark Lam, Sambit B. Pal, Thibault Vogt, Christian Gross, Martin Kiffner, Wenhui Li
News Item
Physics, Multidisciplinary
Wenhui Li
Article
Optics
Mark Lam, Sambit B. Pal, Thibault Vogt, Martin Kiffner, Wenhui Li
Summary: In this study, Rb-85 atoms are optically excited to a low-lying Rydberg state in a heated vapor cell, resulting in the generation of directional terahertz (THz) beams and ultraviolet (UV) light. By characterizing the generated THz power over detuning and power of pump lasers, experimental conditions favoring THz and UV generation are identified. This scheme paves a new pathway towards generating high-power narrowband THz radiation.
Article
Physics, Multidisciplinary
Jinjin Du, Thibault Vogt, Wenhui Li
Summary: We introduce well-separated 87Rb+ ions into an atomic ensemble and achieve single-shot imaging of individual ions with an exposure time of 1 mu s using homodyne detection. The ion detection fidelity is (80 +/- 5)% as analyzed from the absorption spots in the acquired images. These in situ images provide a direct visualization of ion-Rydberg interaction blockade and reveal spatial correlations between Rydberg excitations. The capability of imaging individual ions in a single shot is important for studying collisional dynamics in hybrid ion-atom systems and for using ions as probes in quantum gas measurements.
PHYSICAL REVIEW LETTERS
(2023)
Article
Optics
Thibault Vogt, Christian Gross, Jingshan Han, Sambit B. Pal, Mark Lam, Martin Kiffner, Wenhui Li
Article
Optics
Thibault Vogt, Jingshan Han, Alexandre Thiery, Wenhui Li
Article
Optics
Jingshan Han, Thibault Vogt, Wenhui Li
