Highly stable polarization independent Mach-Zehnder interferometer

Mičuda, Michal; Doláková, Ester; Straka, Ivo; Miková, Martina; Dušek, Miloslav; Fiurášek, Jaromı́r; Ježek, Miroslav

doi:10.1063/1.4891702

Cited by 23 publications

(11 citation statements)

References 26 publications

(29 reference statements)

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“…Note that the optical path length from the first beam displacer to the second beam displacer in our setup is approximately 1.3 m. The 8 • phase uncertainty corresponds to the relative length deviation of 2.1 × 10 −8 per hour. This phase-stability is comparable with the results obtained from a typical Sagnac interferometer with strong laser light [37]. Finally, it is worth noting that the Allan deviation allows us not only to quantify the phase-stability but also to identify the source of noises by its scaling behavior [38].…”

Section: Phase-stabilitysupporting

confidence: 83%

Sagnac-type entangled photon source using only conventional polarization optics

Lee¹,

Xie²,

Tannous³

et al. 2020

Preprint

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We designed and implemented a novel combination of a Sagnacinterferometer with a Mach-Zehnder interferometer for a source of polarizationentangled photons. The new versatile configuration does not require multi-wavelength polarization optics, yet it performs with a good polarization quality and phase-stability over a wide wavelength range. We demonstrate the interferometer using only standard commercial optics to experimentally realize the pulsed generation of polarizationentangled photon-pairs at wavelengths of 764 nm and 1221 nm via type-I spontaneous four-wave mixing in a polarization-maintaining fiber. Polarization entanglement was verified by a polarization-correlation measurement with a visibility of 95.5 % from raw coincidence counts and the violation of the Clauser-Horne-Shimony-Holt (CHSH) inequality with S = 2.70 ± 0.04. The long-term phase-stability was characterized by an Allan deviation of 8 • over an integration time of about 1 hour with no active phase-stabilization.

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Section: Phase-stabilitysupporting

confidence: 83%

Sagnac-type entangled photon source using only conventional polarization optics

Lee¹,

Xie²,

Tannous³

et al. 2020

Preprint

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“…hours. A variation of the Mach-Zehnder interferometer, called a displaced Sagnac interferometer [8][9][10] , is used instead to reduce this inherent instability. In this, the light is split by and returns to the same NPBS using three mirrors, as shown in Fig.…”

Section: Experimental Realizationmentioning

confidence: 99%

A variable partially polarizing beam splitter

Flórez

Carlson

Nacke

et al. 2018

Review of Scientific Instruments

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We present designs for variably polarizing beam splitters. These are beam splitters allowing the complete and independent control of the horizontal and vertical polarization splitting ratios. They have quantum optics and quantum information applications, such as quantum logic gates for quantum computing and non-local measurements for quantum state estimation. At the heart of each design is an interferometer. We experimentally demonstrate one particular implementation, a displaced Sagnac interferometer configuration, that provides an inherent instability to air currents and vibrations. Furthermore, this design does not require any custom-made optics but only common components which can be easily found in an optics laboratory.

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“…Allan Deviation Measurements: In Figure 4b,c, the stability of the reconstructed phase was evaluated using the Allan deviation, a metric first introduced in the context of clocks/frequency references and that describes the stability of the interferometric phase over different time scales. [52,53] Here, we used the Allan deviation expression given by…”

Section: Methodsmentioning

confidence: 99%

Arbitrary Phase Access for Stable Fiber Interferometers

Roztocki

MacLellan

Islam

et al. 2021

Laser & Photonics Reviews

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Well-controlled yet practical systems that give access to interference effects are critical for established and new functionalities in ultrafast signal processing, quantum photonics, optical coherence characterization, etc. Optical fiber systems constitute a central platform for such technologies. However, harnessing optical interference in a versatile and stable manner remains technologically costly and challenging. Here, degrees of freedom native to optical fibers, i.e., polarization and frequency, are used to demonstrate an easily deployable technique for the retrieval and stabilization of the relative phase in fiber interferometric systems. The scheme gives access (without intricate device isolation) to <1.3 × 10 −3 rad error signal Allan deviation across 1 ms to 1.2 h integration times for all tested phases, ranging from 0 to 2 . More importantly, the phase-independence of this stability is shown across the full 2 range, granting access to arbitrary phase settings, central for, e.g., performing quantum projection measurements and coherent pulse recombination. Furthermore, the scheme is characterized with attenuated optical reference signals and single-photon detectors, and extended functionality is demonstrated through the use of pulsed reference signals (allowing time-multiplexing of both main and reference signals). Finally, the scheme is used to demonstrate radiofrequency-controlled interference of high-dimensional time-bin entangled states.

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Highly stable polarization independent Mach-Zehnder interferometer

Cited by 23 publications

References 26 publications

Sagnac-type entangled photon source using only conventional polarization optics

Sagnac-type entangled photon source using only conventional polarization optics

A variable partially polarizing beam splitter

Arbitrary Phase Access for Stable Fiber Interferometers

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