Entanglement via rotational blockade of MgF molecules in a magic potential.

  title={Entanglement via rotational blockade of MgF molecules in a magic potential.},
  author={Eunmi Chae},
  journal={Physical chemistry chemical physics : PCCP},
  • E. Chae
  • Published 4 August 2020
  • Physics
  • Physical chemistry chemical physics : PCCP
Diatomic polar molecules are one of the most promising platforms of quantum computing due to their rich internal states and large electric dipole moments. Here, we propose entangling rotational states of MgF molecules in an optical tweezer array via strong electric dipole-dipole interactions. We employ two rotational states with the projection quantum number of the total angular momentum MF = 0 to maximize the dipole-dipole interaction with a given separation distance. The splitting of 1.27 kHz… 
1 Citations

Figures from this paper

Hyperfine-resolved optical spectroscopy of the A2Π ← X2Σ+ transition in MgF.

We report on hyperfine-resolved laser spectroscopy of the A2Π ← X2Σ+ transition of magnesium monofluoride (MgF), relevant for laser cooling. We recorded 25 rotational transitions with an absolute



Sideband cooling of molecules in optical traps

Sideband cooling is a popular method for cooling atoms to the ground state of an optical trap. Applying the same method to molecules requires a number of challenges to be overcome. Strong tensor

Magneto-optical trapping of a diatomic molecule

Three-dimensional magneto-optical trapping of a diatomic molecule, strontium monofluoride (SrF), at a temperature of approximately 2.5 millikelvin is demonstrated, the lowest yet achieved by direct cooling of a molecule.

Extending Rotational Coherence of Interacting Polar Molecules in a Spin-Decoupled Magic Trap.

Spin-decoupled magic trapping is demonstrated, which cancels first-order and reduces second-order differential light shifts, and density-dependent coherence times are observed, which can be explained by dipolar interactions in the bulk gas.

Anisotropic polarizability of ultracold polar 40K87Rb molecules.

The measurement of the anisotropic ac polarizability of ultracold polar (40)K(87)Rb molecules in the ground and first rotationally excited states is reported, and a sharp increase in the coherence time is observed.

Quantum-State Controlled Chemical Reactions of Ultracold Potassium-Rubidium Molecules

Experimental evidence for exothermic atom-exchange chemical reactions is reported, starting with an optically trapped near–quantum-degenerate gas of polar 40K87Rb molecules prepared in their absolute ground state.

Robust entangling gate for polar molecules using magnetic and microwave fields

Polar molecules are an emerging platform for quantum technologies based on their long-range electric dipole–dipole interactions, which open new possibilities for quantum information processing and

Ultracold polar molecules as qudits

We discuss how the internal structure of ultracold molecules, trapped in the motional ground state of optical tweezers, can be used to implement qudits. We explore the rotational, fine and hyperfine

An optical tweezer array of ultracold molecules

By distinguishing between single and multiple molecules in the tweezers, the researchers were able to observe molecular collisions and observe ground-state collisions of laser-cooled molecules both in the presence and absence of near-resonant light.

Laser cooling of optically trapped molecules

Ultracold molecules are ideal platforms for many important applications, ranging from quantum simulation1–5 and quantum information processing 6,7 to precision tests of fundamental physics2,8–11.

Long-range interactions between polar alkali-metal diatoms in external electric fields

We computed the long-range interactions between two identical polar bialkali molecules in their rovibronic ground level for all ten species involving Li, Na, K, Rb, and Cs, using accurate quantum