Entangled photon polarimetry

Altepeter, Joseph B.; Oza, Neal N.; Medic, Milja; Jeffrey, E.; Kumar, Prem

doi:10.1364/oe.19.026011

Cited by 14 publications

(8 citation statements)

References 17 publications

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“…We have also shown arbitrary reshaping of quantum signals with near-unity fidelity and essentially no loss, a functionality that is highly desirable for interfacing disparate quantum systems. Using a dynamic OAWG device, our technique can allow for realtime manipulation and measurement of quantum signals, enabling applications such as high-speed quantum-state tomography of highdimensional signals [39] and adaptive measurement of spatiotemporal profiles of quantum light [40]. Experimentally, we have discriminated two overlapping signals using commercial OAWG and waveguide devices, demonstrating mode-selective frequency conversion with over 8 dB selectivity.…”

Section: Resultsmentioning

confidence: 99%

Quantum optical arbitrary waveform manipulation and measurement in real time

et al. 2014

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We describe a technique for dynamic quantum optical arbitrary-waveform generation and manipulation, which is capable of mode selectively operating on quantum signals without inducing significant loss or decoherence. It is built upon combining the developed tools of quantum frequency conversion and optical arbitrary waveform generation. Considering realistic parameters, we propose and analyze applications such as programmable reshaping of picosecond-scale temporal modes, selective frequency conversion of any one or superposition of those modes, and mode-resolved photon counting. We also report on experimental progress to distinguish two overlapping, orthogonal temporal modes, demonstrating over 8 dB extinction between picosecond-scale time-frequency modes, which agrees well with our theory. Our theoretical and experimental progress, as a whole, points to an enabling optical technique for various applications such as ultradense quantum coding, unity-efficiency cavity-atom quantum memories, and high-speed quantum computing.

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Section: Resultsmentioning

confidence: 99%

Quantum optical arbitrary waveform manipulation and measurement in real time

et al. 2014

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“…In the discrete-variable regime of single, or few, photons one is interested in two-mode states, which for many purposes can be regarded as spin systems. Consequently, the polarization states can be determined from correlation functions of different orders [78,[234][235][236][237][238][239][240][241][242][243]. Given the small dimensionality of the Hilbert space involved, the state reconstruction can be readily performed.…”

Section: Discrete-variable Regimementioning

confidence: 99%

Quantum concepts in optical polarization

et al. 2021

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We comprehensively review the quantum theory of the polarization properties of light. In classical optics, these traits are characterized by the Stokes parameters, which can be geometrically interpreted using the Poincaré sphere. Remarkably, these Stokes parameters can also be applied to the quantum world, but then important differences emerge: now, because fluctuations in the number of photons are unavoidable, one is forced to work in the three-dimensional Poincaré space that can be regarded as a set of nested spheres. Additionally, higher-order moments of the Stokes variables might play a substantial role for quantum states, which is not the case for most classical Gaussian states. This brings about important differences between these two worlds that we review in detail. In particular, the classical degree of polarization produces unsatisfactory results in the quantum domain. We compare alternative quantum degrees and put forth that they order various states differently. Finally, intrinsically nonclassical states are explored and their potential applications in quantum technologies are discussed.

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“…Quantum polarization has been used for quantum key distribution (Bennett et al, 1992;Muller et al, 1993), Einstein-Podolsky-Rosen tests (Kwiat et al, 1995), quantum teleportation (Bouwmeester et al, 1997), quantum tomography (James et al, 2001), weak value amplification (Hallaji et al, 2017), and more. However, the study of the changes in quantum polarization have not, to our knowledge, been the focus of any major review, which is a void that must especially be filled due to the proliferation of recent experiments on polarimetry with explicitly quantum mechanical states of light (Altepeter et al, 2011;Bogdanov et al, 2004;Daryanoosh et al, 2018;Graham et al, 2006;Mitchell et al, 2004;Oza et al, 2010;Rosskopf et al, 2020;Slussarenko et al, 2017;Sun et al, 2020;Toussaint et al, 2004;Yoon et al, 2020;Zhang et al, 2021). We set forth to present a complete picture of quantum polarimetry in this work.…”

Section: Introductionmentioning

confidence: 99%

Quantum Polarimetry

Goldberg

2021

Preprint

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Polarization is one of light's most versatile degrees of freedom for both classical and quantum applications. The ability to measure light's state of polarization and changes therein is thus essential; this is the science of polarimetry. It has become ever more apparent in recent years that the quantum nature of light's polarization properties is crucial, from explaining experiments with single or few photons to understanding the implications of quantum theory on classical polarization properties. We present a self-contained overview of quantum polarimetry, including discussions of classical and quantum polarization, their transformations, and measurements thereof. We use this platform to elucidate key concepts that are neglected when polarization and polarimetry are considered only from classical perspectives.

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Entangled photon polarimetry

Abstract: Abstract:We construct an entangled photon polarimeter capable of monitoring a two-qubit quantum state in real time. Using this polarimeter, we record a nine frames-per-second video of a two-photon state's transition from separability to entanglement.

Cited by 14 publications

References 17 publications

Quantum optical arbitrary waveform manipulation and measurement in real time

Quantum optical arbitrary waveform manipulation and measurement in real time

Quantum concepts in optical polarization

Quantum Polarimetry

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