We theoretically demonstrate a viable approach to spin squeezing in optical lattice clocks via dressing of one clock state highly excited Rydberg state, generating switchable atomic interactions. For realistic experimental parameters, these interactions are shown generate over 10 dB large ensembles within few microseconds and without degrading the subsequent interrogation.

We provide a non-unit-disk framework to solve combinatorial optimization problems such as maximum cut and independent set on Rydberg quantum annealer. Our setup consists of many-body interacting system where locally controllable light shifts are applied individual qubits in order map the graph problem onto Ising spin model. Exploiting flexibility that optical tweezers offer terms spatial arrangement, our numerical simulations implement local-detuning protocol while globally driving annealer...

Summary: Electroporation with shuttle plasmids carrying a kanamycin resistance gene as selectable marker failed to generate transformants in two mycobacterial species currently being used human vaccine trials (Mycobacterium w and Mycobacterium vaccae). In contrast, efficient transformation [103-105 (μg DNA)−1] was obtained using novel vectors selection based on expression of hygromycin. The hygromycin vector also found be more than for smegmatis bovis BCG. overexpress superoxide dismutase...

We explore the prospects for confining alkaline-earth Rydberg atoms in an optical lattice via dressing of secondary core valence electron. Focussing on particular case strontium, we identify experimentally accessible magic wavelengths simultaneous trapping ground and states. A detailed analysis relevant loss mechanisms shows that overall lifetime such a system is limited only by spontaneous decay state, not significantly affected photoionization or autoionization. The van der Waals C_6...

Abstract When particles with integer spin accumulate at low temperature and high density, they undergo Bose–Einstein condensation (BEC). Atoms, magnons, solid-state excitons, surface plasmon polaritons excitons coupled to light exhibit BEC, which results in coherence due massive occupation of the respective system’s ground state. Surprisingly, photons were shown BEC recently organic-dye-filled optical microcavities, which—owing photon’s mass—occurs room temperature. Here we demonstrate that...

The study of confinement in quantum spin chains has seen a large surge interest recent years. It is not only important for understanding range effective one-dimensional condensed matter realizations, but also shares some the non-perturbative physics with chromodynamics (QCD) which makes it prime target current simulation efforts. In analogy QCD, confinement-induced two-particle boundstates that appear these models are dubbed mesons. Here, we scattering events due to meson collisions chain...

Quantum fluctuations in frustrated systems can lead to the emergence of complex many-body phases. However, role quantum frustration-free lattices is less explored and could provide an interesting avenue for exploring new physics, perhaps easier realize compared lattice systems. Using Rydberg atoms with tunable interactions as a platform, we leverage strong van der Waals obtain constrained model one dimension nonlocal given by dipolar alongside local fluctuations. The combined effect such...

We show how the phase profile of Bose-Einstein condensates can be engineered through its interaction with localized Rydberg excitations. The is made controllable and long range by off-resonantly coupling condensate to another state laser light. Our technique allows mapping entanglement generated in systems few strongly interacting atoms onto much larger atom clouds hybrid setups. As an example we discuss creation a spatial mesoscopic superposition from bright soliton. Additionally, imprinted...

A remarkable consequence of spontaneously breaking the time translational symmetry in a system, is emergence crystals. In periodically driven systems, discrete crystals (DTC) can be realized which have periodicity that n times driving period. However, all experimental observations been performed for period-doubling and period-tripling Novel physics arise by simulating many-body domain, would require genuine realisation n-tupling DTC. system ultra-cold bosonic atoms bouncing resonantly on an...

The ability to prepare non-classical states in a robust manner is essential for quantum sensors beyond the standard limit. We demonstrate that Bayesian optimal control capable of finding pulses drive trapped Rydberg atoms into highly entangled GHZ states. sequences have physically intuitive functionality based on quasi-integrability Ising dynamics. They can be constructed laboratory experiments resulting preparation times scale very favourably with system size.

An important issue in developing quantum technology is that states are so sensitive to noise. We propose a protocol introduces reverse dynamics, order precisely control systems against noise described by the Lindblad master equation. The dynamics can be obtained constructing Petz recovery map continuous time. By providing exact form of Hamiltonian and jump operators for we explore potential utilizing near-optimal controlling noisy dynamics. While time-dependent dissipation engineering...

Journal Article Combined Multidrug and Mycobacterium w Vaccine Therapy in Patients with Multibacillary Leprosy Get access S. Ahmed Zaheer, Zaheer Reprints or correspondence: Dr. Microbiology Division, National Institute ofImmunology, Jit Sing Marg, JNU Complex, New Delhi-110067, India. Search for other works by this author on: Oxford Academic PubMed Google Scholar Rama Mukherjee, Mukherjee Deena Ramkumar, Ramkumar Radhey Misra, Misra Amar K. Sharma, Sharma Hemant Kar, Kar Harvinder Kaur,...

Tuberculosis caused by the intracellular bacterial pathogen Mycobacterium tuberculosis still represents a major health problem, and its effective control would best be accomplished active vaccination. Although vaccination with M. bovis BCG has proven highly in certain parts of world, several developing countries it been found to confer only marginal protection. Hence, novel strategies are warranted. w is saprophytic cultivable mycobacterium which shares antigens tuberculosis. In murine...

We demonstrate that Ramsey spectroscopy can be used to observe Rydberg-dressed interactions. In contrast many prior proposals, our scheme operates comfortably within experimentally measured lifetimes, and accesses a regime where quantum superpositions are crucial. The key idea is build spin-1/2 from one level another not. These levels may hyperfine or long-lived electronic states. An Ising spin model governs the dynamics, for which we derive an exact solution. Due structure of Rydberg...

We derive effective lattice models for ultracold bosonic or fermionic nonreactive molecules (NRMs) in an optical lattice, analogous to the Hubbard model that describes atoms a lattice. In stark contrast model, which is commonly assumed accurately describe NRMs, we find single on-site interaction parameter U replaced by multichannel interaction, whose properties elucidate. Because this arises from complex short-range collisional physics, it requires no dipolar interactions and thus occurs...

Competing short- and long-range interactions represent distinguished ingredients for the formation of complex quantum many-body phases. Their study is hard to realize with conventional simulators. In this regard, Rydberg atoms provide an exception as their excited manifold states have both density-density exchange whose strength range can vary considerably. Focusing on one-dimensional systems, we leverage Van der Waals dipole-dipole obtain zero-temperature phase diagram a uniform chain dimer...

Ultra-cold atomic gases are unique in terms of the degree controllability, both for internal and external degrees freedom. This makes it possible to use them study complex quantum many-body phenomena. However many scenarios, prerequisite condition faithfully preparing a desired state despite decoherence system imperfections is not always adequately met. To path way specific target state, we explore optimal control framework based on Bayesian optimization. The probabilistic modeling broad...

The realization of antiferromagnetic (AF) correlations in ultracold fermionic atoms on an optical lattice is a significant achievement. Experiments have been carried out one, two, and three dimensions, also studied anisotropic configurations with stronger tunneling some directions. Such anisotropy relevant to the physics cuprate superconductors other strongly correlated materials. Moreover, this might be harnessed enhance AF order. Here we numerically investigate, using Determinant Quantum...

Abstract X-ray free-electron lasers are sources of coherent, high-intensity X-rays with numerous applications in ultra-fast measurements and dynamic structural imaging. Due to the stochastic nature self-amplified spontaneous emission process difficulty controlling injection electrons, output pulses exhibit significant noise limited temporal coherence. Standard measurement techniques used for characterizing two-coloured challenging, as they either invasive or diagnostically expensive. In this...

The Bose-Hubbard model (BHM) has been widely explored to develop a profound understanding of the strongly correlated behavior interacting bosons. Quantum simulators not only allow exploration BHM but also extend it models with interesting phenomena such as gapped phases multiple orders and topological phases. In this work, an extended involving dimerized one-dimensional long-range hard-core bosons is studied. Bond-order density wave (BODW) are characterized in terms their symmetry breaking...

Recent experimental advances in the cooling and manipulation of bialkali dimer molecules have enabled production gases ultracold that are not chemically reactive. It has been presumed literature absence an electric field low-energy scattering such nonreactive (NRMs) will be similar to atoms, which a single $s$-wave length governs collisional physics. However, Ref. [1], it was argued short-range physics NRMs is much more complex than for this leads many-body description terms multi-channel...