General lossless spatial polarization transformations

Sit, Alicia; Giner, Lambert; Karimi, Ebrahim; Lundeen, Jeff S.

doi:10.1088/2040-8986/aa7f65

Cited by 27 publications

(20 citation statements)

References 57 publications

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“…In our demonstration, SLMs are used without any diffractive or interferometric methods to exploit the device's ability to perform various polarization transformations. Following the proposal in [25], we show that two sequential SLM incidences will induce a controllable, neararbitrary conversion of the polarization point-by-point across the wave front of a light field. In our demonstration, both incidences are on the same SLM device.…”

Section: Introductionmentioning

confidence: 74%

Implementation of nearly arbitrary spatially-varying polarization transformations: a non-diffractive and non-interferometric approach using spatial light modulators

Runyon,

Nacke,

Sit

et al. 2018

Preprint

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A fast and automated scheme for general polarization transformations holds great value in adaptive optics, quantum information, and virtually all applications involving light-matter and light-light interactions. We present an experiment that uses a liquid crystal on silicon spatial light modulator (LCOS-SLM) to perform polarization transformations on a light field. We experimentally demonstrate the point-by-point conversion of uniformly polarized light fields across the wave front to realize arbitrary, spatially varying polarization states. Additionally, we demonstrate that a light field with an arbitrary spatially varying polarization can be transformed to a spatially invariant (i.e., uniform) polarization.

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Section: Introductionmentioning

confidence: 74%

Implementation of nearly arbitrary spatially-varying polarization transformations: a non-diffractive and non-interferometric approach using spatial light modulators

Runyon,

Nacke,

Sit

et al. 2018

Preprint

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“…Here we describe our apparatus that generates rotations Ũ k (θ, φ), ϕ in the Bloch sphere for polarization qubits. We describe the theory behind the design of our device that implements these general polarization transformations [52][53][54], and present experimental results that demonstrate its performance.…”

Section: Appendix A: Polarization Transformationsmentioning

confidence: 99%

Self-consistent state and measurement tomography with fewer measurements

Stephens,

Cutshall,

McPhee

et al. 2021

Preprint

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We describe a technique for self consistently characterizing both the quantum state of a singlequbit system, and the positive-operator-valued measure (POVM) that describes measurements on the system. The method works with only ten measurements. We assume that a series of unitary transformations performed on the quantum state are fully known, while making minimal assumptions about both the density operator of the state and the POVM. The technique returns maximum-likely estimates of both the density operator and the POVM. To experimentally demonstrate the method, we perform reconstructions of over 300 state-measurement pairs and compare them to their expected density operators and POVMs. We find that 95% of the reconstructed POVMs have fidelities of 0.98 or greater, and 92% of the density operators have fidelities that are 0.98 or greater.

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“…There are several different methods to generate optical beams possessing inhomogeneous polarization distributions in their transverse plane. For instance, phase-only spatial light modulators (SLMs) [18,19,20], non-unitary polarization transformation [21], and spatially structured birefringent plates [8,22] have so far been used to generate Poincaré or vector vortex beams. In this article, we use the latter technique to generate full Poincaré beams [8] by means of a spatially structured liquid crystal device, referred to as q-plate [23].…”

Section: Space-varying Polarized Beams Under Tight Focusingmentioning

confidence: 99%

Multi-twist polarization ribbon topologies in highly-confined optical fields

et al. 2019

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Electromagnetic plane waves, solutions to Maxwell's equations, are said to be 'transverse' in vacuum. Namely, the waves' oscillatory electric and magnetic fields are confined within a plane transverse to the waves' propagation direction. Under tight-focusing conditions however, the field can exhibit longitudinal electric or magnetic components, transverse spin angular momentum, or non-trivial topologies such as Möbius strips. Here, we show that when a suitably spatially structured beam is tightly focused, a three-dimensional polarization topology in the form of a ribbon with two full twists appears in the focal volume. We study experimentally the stability and dynamics of the observed polarization ribbon by exploring its topological structure for various radii upon focusing and for different propagation planes.

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General lossless spatial polarization transformations

Cited by 27 publications

References 57 publications

Implementation of nearly arbitrary spatially-varying polarization transformations: a non-diffractive and non-interferometric approach using spatial light modulators

Implementation of nearly arbitrary spatially-varying polarization transformations: a non-diffractive and non-interferometric approach using spatial light modulators

Self-consistent state and measurement tomography with fewer measurements

Multi-twist polarization ribbon topologies in highly-confined optical fields

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