PERSPECTIVE
The authors offer an overview of progress and a future perspective of large-scale optical quantum entanglement. They cover a broad range of topics from the basics of continuous-variable optical quantum entanglement and a multiplexing methodology for the generation of large-scale quantum entanglement to future approaches toward practical usages of large-scale optical quantum entanglement. The content includes both pedagogical content and the search for future directions beyond the current frontier.
Warit Asavanant and Akira Furusawa
Phys. Rev. A
109
, 040101 (2024)
LETTER
The authors show that a precise microwave preparation of a quantum superposition between three rotational states of an ultracold dipolar molecule generates controllable interferences in their calculated collisional rate coefficients, at an electric field that produces a Forster resonance. This can enable coherent control on ultracold molecular collisions in current experiments.
Thibault Delarue and Goulven Quemener
Phys. Rev. A
109
, L061303 (2024)
LETTER
The author demonstrates through symmetry analysis that the vector correlations induced by dipole-allowed transitions are generally sensitive to molecular chirality. As an example, the author finds that the two-particle angular distributions of photoelectrons and fragment ions resulting from ionization of randomly oriented molecules exhibit chirality, even with unpolarized or linearly polarized light.
Yoshi-Ichi Suzuki
Phys. Rev. A
109
, L060802 (2024)
LETTER
Researchers investigate the dynamics of out-of-equilibrium Bose-Einstein condensates, revealing the emergence of conformal invariant transient states and Schramm-Loewner evolution behavior, characterized by the evolution of density isolines. The paper discusses a link between this behavior in quantum turbulence and other four-wave interacting systems.
J. Amette Estrada, M. Noseda, P. J. Cobelli, and P. D. Mininni
Phys. Rev. A
109
, L061302 (2024)
LETTER
Faithfully condensing the vital information of a physical system is of significant fundamental and practical interest. In this letter, the authors introduce a measurement scheme and present a proof-of-principle experiment of a dimensionless pseudospin pointer based on weak measurement.
Ling Ye
et al.
Phys. Rev. A
109
, L060601 (2024)
LETTER
Describing the band topology of disordered materials is a challenging task. Here, the author proposes a mean-field approach for analytically predicting spectral topological invariances and the boundary localization of associated eigenstates in bond-disordered lattices subjected to a spatially fluctuating imaginary gauge field (IGF) that breaks translational symmetry and uncovers a hidden topological phase transition in a quasicrystalline lattice under an IGF.
Bikashkali Midya
Phys. Rev. A
109
, L061502 (2024)
EDITORS' SUGGESTION
The authors obtained experimental rate coefficients for reactions between HD
and H
ions and neutral C atoms using a recently commissioned ion-neutral collision setup at the Cryogenic Storage Ring (CSR), located at the Max Planck Institute for Nuclear Physics in Heidelberg. The measurements with vibrationally cold ions result in significantly higher rate coefficients when compared with previous studies using internally excited ions. The new data are supported by dedicated theoretical calculations and provide new insights into the dynamics of this type of reaction at interstellar conditions.
Florian Grussie
et al.
Phys. Rev. A
109
, 062804 (2024)
LETTER
The author theoretically studies the structure of self-bound one-dimensional droplets containing a mixture of ytterbium fermionic isotopes. The results indicate that these droplets consist of consecutive molecules made up of two different isotopes of ytterbium.
M. C. Gordillo
Phys. Rev. A
109
, L061301 (2024)
EDITORS' SUGGESTION
The authors present experimental data for annihilation spectra and binding energies for positron interactions with several aromatic and heterocyclic ring molecules. The results are compared with the predictions of an
theory of positron binding with excellent agreement.
E. Arthur-Baidoo
et al.
Phys. Rev. A
109
, 062801 (2024)
EDITORS' SUGGESTION
The authors investigate spontaneous polarization and bistability in a room-temperature coated Cs cell with remarkably long spin coherence times of 17 seconds. Their results shed new light onto the phenomenon of spin bistability and spin-exchange collisions, and may find applications in optical switches utilizing spin-bistability-relevant devices in integrated optics and potentially in quantum interfaces.
Shuyuan Chen
et al.
Phys. Rev. A
109
, 063101 (2024)
EDITORS' SUGGESTION
The authors derive the topological origin for the skin effect in a chiral waveguide quantum electrodynamics system which is lossless in the bulk. Unlike the conventional skin effect, this skin effect depends on the finite size of the lattice and is termed the “mesoscopic non-Hermitian skin effect.”
Alexander Poddubny, Janet Zhong, and Shanhui Fan
Phys. Rev. A
109
, L061501 (2024)
EDITORS' SUGGESTION
The authors report the experimental realization of an effective Hamiltonian with a continuously adjustable staggered gauge field for weakly interacting bosons in an optical lattice using Floquet engineering. They observe recondensation of quench-excited atoms on time scales faster than global heating due to the drive.
J. Maslek, C. A. Bracamontes, and J. V. Porto
Phys. Rev. A
109
, 063302 (2024)
LETTER
The authors introduce a model of C
resonant charge transfer which accounts for the formation of temporary bonds between the two colliding fullerenes. These bonds extend the interaction time between the two molecules, increasing the charge-transfer cross section.
J. Smucker
et al.
Phys. Rev. A
109
, L060801 (2024)