Complete quantum coherent control of ultracold molecular collisions

Abstract

We show that quantum interference-based coherent control is a highly efficient tool for tuning ultracold molecular collision dynamics, and is free from the limitations of commonly used methods that rely on external electromagnetic fields. By varying {the relative populations and} phases of an initial coherent superpositions of degenerate molecular states, we demonstrate complete coherent control over integral scattering cross sections in the ultracold $s$-wave regime of both the initial and final collision channels. The proposed control methodology is applied to ultracold O${}_2$~+~O${}_2$ collisions, showing extensive control over $s$-wave spin-exchange cross sections and product branching ratios over many orders of magnitude.

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Cited by in corpus (14)

• Bimolecular chemistry in the ultracold regime
• Quantum Coherent Control of a Single Molecular-Polariton Rotation
• Stereodynamical control of cold collisions between two aligned D2 molecules
• Stereodynamic control of cold rotationally inelastic CO + HD collisions
• Single-photon hologram of a zero-area pulse
• Composite pulses for high fidelity population transfer in three-level systems
• Signatures of Non-universal Quantum Dynamics of Ultracold Chemical Reactions of Polar Alkali-dimer Molecules with Alkali-metal Atoms: Li(${}^2$S) +NaLi($a^3{\Sigma }^{+}$) $\to$ Na(${}^2$S) + Li${}_2$($a^3{\Sigma }_u^{+}$)
• Total angular momentum representation for state-to-state quantum scattering of cold molecules in a magnetic field
• Selective quantum Zeno effect of ultracold atom-molecule scattering in dynamic magnetic fields
• Near-threshold scaling of resonant inelastic collisions at ultralow temperatures
• Multichannel quantum defect theory with a frame transformation for ultracold atom-molecule collisions in magnetic fields
• Rigorous quantum calculations for atom-molecule chemical reactions in electric fields: from single to multiple partial wave regimes
• Ultracold coherent control of molecular collisions at a Förster resonance
• Hyperfine and Zeeman interactions in ultracold collisions of molecular hydrogen with atomic lithium