6533b7dbfe1ef96bd1270bdb

RESEARCH PRODUCT

Experimental Realization of a Dirac Monopole through the Decay of an Isolated Monopole

W. LeeKonstantin TiurevTuomas OllikainenTuomas OllikainenDavid HallMikko MöttönenMikko MöttönenAlina Blinova

subject

Spin statesmagneetitHigh Energy Physics::LatticeQC1-999Magnetic monopoleFOS: Physical sciencesGeneral Physics and Astronomy01 natural sciences010305 fluids & plasmasQuantization (physics)Atomic and Molecular Physics0103 physical sciences010306 general physicskvanttifysiikkamagnetsSpin-½PhysicsCondensed Matter::Quantum Gasesta114PhysicsMagnetic field gradientMagnetic fieldQuantum Gases (cond-mat.quant-gas)quantum physicsQuantum electrodynamicsParticleCondensed Matter - Quantum GasesRealization (systems)

description

We experimentally observe the decay dynamics of deterministically created isolated monopoles in spin-1 Bose-Einstein condensates. As the condensate undergoes a change between magnetic phases, the isolated monopole gradually evolves into a spin configuration hosting a Dirac monopole in its synthetic magnetic field. We characterize in detail the Dirac monopole by measuring the particle densities of the spin states projected along different quantization axes. Importantly, we observe the spontaneous emergence of nodal lines in the condensate density that accompany the Dirac monopole. We also demonstrate that the monopole decay accelerates in weaker magnetic field gradients.

10.1103/physrevx.7.021023http://dx.doi.org/10.1103/physrevx.7.021023