Robust generation of entangled state via ground-state antiblockade of Rydberg atoms

Neutral atoms are entangled in hyperfine states via Rydberg blockade

Half-cycle-pulse-train induced state redistribution of Rydberg atoms

Population transfer between low-lying Rydberg states independent of the initial state is realized using a train of half-cycle pulses with pulse durations much shorter than the classical orbital period. We demonstrate experimentally the population transfer from initial states around n = 50 with 10% of the population de-excited down to n < 40 as well as up to the continuum. This is a demonstratio...

Optical generation of hybrid entangled state via entangling single-photon-added coherent state

We propose a feasible scheme to realize the optical entanglement of single-photon-added coherent state (SPACS) and show that, besides the Sanders entangled coherent state, the entangled SPACS also leads to new forms of hybrid entanglement of quantum Fock state and classical coherent state. We probe the essential difference of two types of hybrid entangled state (HES). This HES provides a novel ...

Electron capture from aligned p-state Rydberg atoms

Electron capture by Li ions from aligned Na(25p) Rydberg atoms was measured as a function of the approach angle between the alignment axis of the target-atom wave functions and the ion-beam direction, over a range of reduced velocity ṽ51.0–2.0, where ṽ5v ion /ve . A Stark barrel was used to generate uniform rotatable electric fields over the collision volume and to align Rydberg atoms along the...

Relaxation of antihydrogen from Rydberg to ground state

Atoms formed in highly-magnetized, cryogenic Penning trap plasmas, such as those used in the Athena and ATRAP antihydrogen experiments, form in the guiding-center atom regime. In this regime, the positron orbit is well described by classical guiding-center drift dynamics. Electromagnetic radiation from such atoms is minimal, and energy loss is accomplished primarily through collisions between t...