Transverse quantum Stern–Gerlach magnets for electrons

McGregor, Scot; Bach, Roger; Batelaan, Herman

doi:10.1088/1367-2630/13/6/065018

Cited by 24 publications

(30 citation statements)

References 16 publications

(25 reference statements)

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“…However, this principle can be side stepped by a design motivated by quantum-mechanical principles. This has been shown for the electron Stern-Gerlach magnet [35]. The current effect appears to fall into the same category.…”

Section: Discussionsupporting

confidence: 63%

Spin-dependent two-color Kapitza-Dirac effects

et al. 2015

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In this paper we present an analysis of the spin behavior of electrons propagating through a laser field. We present an experimentally realizable scenario in which spin-dependent effects of the interaction between the laser and the electrons are dominant. The laser interaction strength and incident electron velocity are in the nonrelativistic domain. This analysis may thus lead to novel methods of creating and characterizing spin-polarized nonrelativistic femtosecond electron pulses.

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Section: Discussionsupporting

confidence: 63%

Spin-dependent two-color Kapitza-Dirac effects

et al. 2015

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“…By calculating a magnetic field vector hologram in addition to a scalar (binary) aperture, one can in principle arbitrarily manipulate the spin components into J z eigenstate vortices. This type of magnetized aperture diffraction has been considered previously in light of the transverse Stern-Gerlach effect [28]. There, spatial spin splitting was described by using only a strong magnetic field gradient over the diffraction slits.…”

Section: Angular Momentum Analysismentioning

confidence: 99%

“…One can thus not fabricate a J z holographic mask without magnetizing it. This extra degree of manipulation could in itself lead to transverse spin-splitting as in [28], although it is not clear how the transverse SternGerlach effect calculated there will couple to the vortex formation by a holographic mask simultaneously. A combined magnetized and forked pattern seems like the most achievable solution, once the necessary magnetization conditions can be experimentally achieved.…”

Section: Mathematical Solutionsmentioning

confidence: 99%

Spin effects in electron vortex states

Boxem¹,

Verbeeck²,

Partoens³

2013

EPL

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-The recent experimental realization of electron vortex beams opens up a wide research domain previously unexplored. The present paper explores the relativistic properties of these electron vortex beams, and quantifies deviations from scalar wave theory. It is common in electron optics to use the Schrödinger equation neglecting spin. The present paper investigates the role of spin and the total angular momentum Jz and how it pertains to the vortex states.As an application, we also investigate if it is possible to use holographic reconstruction to create novel total angular momentum eigenstates in a Transmission Electron Microscope. It is demonstrated that relativistic spin coupling effects disappear in the paraxial limit, and spin effects in holographically created electron vortex beams can only be exploited by using specialized magnetic apertures.

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“…The sensitivity might even allow for measurements to be performed using charged particle interferometers [774] of various types (e.g. a Ramsey Bordé interferometer [775] or schemes based upon spin-polarization [776,777]). However, these may only be viable for gravity tests if one could devise a method in which phase shifts developed from gravitational effects could somehow be differentiated from other sources, e.g.…”

Section: Antimatter Gravity Experimentsmentioning

confidence: 99%

Experimental progress in positronium laser physics

2018

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Abstract. The field of experimental positronium physics has advanced significantly in the last few decades, with new areas of research driven by the development of techniques for trapping and manipulating positrons using Surko-type buffer gas traps. Large numbers of positrons (typically ≥10 6 ) accumulated in such a device may be ejected all at once, so as to generate an intense pulse. Standard bunching techniques can produce pulses with ns (mm) temporal (spatial) beam profiles. These pulses can be converted into a dilute Ps gas in vacuum with densities on the order of 10 7 cm −3 which can be probed by standard ns pulsed laser systems. This allows for the efficient production of excited Ps states, including long-lived Rydberg states, which in turn facilitates numerous experimental programs, such as precision optical and microwave spectroscopy of Ps, the application of Stark deceleration methods to guide, decelerate and focus Rydberg Ps beams, and studies of the interactions of such beams with other atomic and molecular species. These methods are also applicable to antihydrogen production and spectroscopic studies of energy levels and resonances in positronium ions and molecules. A summary of recent progress in this area will be given, with the objective of providing an overview of the field as it currently exists, and a brief discussion of some future directions.

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Transverse quantum Stern–Gerlach magnets for electrons

Cited by 24 publications

References 16 publications

Spin-dependent two-color Kapitza-Dirac effects

Spin-dependent two-color Kapitza-Dirac effects

Spin effects in electron vortex states

Experimental progress in positronium laser physics

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