Dr. Michal Karpinski Profile

Dr. Michal Karpinski

Assistant Professor at Univ Warszawski

SPIE Involvement:

Author | Student Chapter Advisor

Publications (8)

Proceedings Article | 19 July 2023 Presentation + Paper

Toward frequency multiplexing for time-bin states

Benjamin Nussbaum, Ujaan Purakayastha, John Floyd, Jerzy Szuniewicz, Filip Sośnicki, Michał Karpiński, Paul Kwiat

Proceedings Volume 12633, 1263302 (2023) https://doi.org/10.1117/12.2670969

KEYWORDS: Wavelength division multiplexing, Quantum networks, Quantum communications, Electrooptic modulation

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Proceedings Article | 25 April 2023 Presentation + Paper

Investigating the use of polarization maintaining FBG sensors for GW-based SHM

Rohan Soman, Sara Sarbaz, Kaleeswaran Balasubramaniam, Ali Golestani, Michał Karpiński, Tomasz Wandowski, Paweł Malinowski, Wiesław Ostachowicz

Proceedings Volume 12488, 124881U (2023) https://doi.org/10.1117/12.2658465

KEYWORDS: Fiber Bragg gratings, Sensors, Structural health monitoring, Tunable filters, Polarization, Waveguides, Signal processing, Signal filtering, Actuators, Reflection

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Proceedings Article | 9 March 2022 Presentation

Efficient interfacing of GHz and MHz bandwidth single-photon pulses

Filip Sosnicki, Michal Mikolajczyk, Ali Golestani Shishvan, Adam Widomski, Michal Karpinski

Proceedings Volume PC12015, PC120150K (2022) https://doi.org/10.1117/12.2608608

KEYWORDS: Single photon, Photons, Quantum dots, Quantum communications, Picosecond phenomena, Telecommunications, Quantum information, Quantum efficiency, Optical filters, Molecular bridges

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Proceedings Article | 22 March 2021 Presentation + Paper

Application of ellipse and hyperbola methods for guided waves based structural health monitoring using fiber Bragg grating sensors

Rohan Soman, Ali Golestani, Kaleeswaran Balasubramaniam, Michał Karpiński, Paweł Malinowski, Wieslaw Ostachowicz

Proceedings Volume 11593, 115930F (2021) https://doi.org/10.1117/12.2582979

KEYWORDS: Fiber Bragg gratings, Sensors, Damage detection, Waveguides, Structural health monitoring, Tomography, Signal processing, Phased arrays, Inspection

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Proceedings Article | 5 March 2021 Presentation

Single-photon manipulation by complex temporal phase modulation

Filip Sosnicki, Michal Mikolajczyk, Ali Golestani Shishvan, Adam Widomski, Michal Karpinski

Proceedings Volume 11699, 1169916 (2021) https://doi.org/10.1117/12.2582621

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Proceedings Article | 14 March 2018 Presentation

Discrete spatial entanglement in multimode nonlinear waveguides (Conference Presentation)

Michal Jachura, Michal Karpinski, Konrad Banaszek, Divya Bharadwaj, Jasleen Lugani, Krishna Thyagarajan

Proceedings Volume 10540, 1054028 (2018) https://doi.org/10.1117/12.2287422

KEYWORDS: Waveguides, Quantum communications, Quantum cryptography, Quantum dot lasers, Quantum dots, Imaging spectroscopy, Quantum wells, Quantum optics, Dispersion, Spatial filters

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Proceedings Article | 3 August 2016 Presentation

Electro-optic bandwidth manipulation of quantum light (Conference Presentation)

Michal Karpinski, Michal Jachura, Laura Wright, Brian Smith

Proceedings Volume 9900, 990015 (2016) https://doi.org/10.1117/12.2229232

KEYWORDS: Single photon, Electro optics, Quantum information processing, Optical filters, Phase modulation, Modulation, Quantum optics, Integrated photonics, Quantum efficiency, Terahertz radiation

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Spectral-temporal manipulation of optical pulses has enabled numerous developments within a broad range of research topics, ranging from fundamental science to practical applications. Within quantum optics spectral-temporal degree of freedom of light offers a promising platform for integrated photonic quantum information processing. An important challenge in experimentally realizing spectral-temporal manipulation of quantum states of light is the need for highly efficient manipulation tools. In this context the intrinsically deterministic electro-optic methods show great promise for quantum applications. We experimentally demonstrate application of electro-optic platform for spectral-temporal manipulation of ultrashort pulsed quantum light. Using techniques analogous to serrodyne frequency shifting we show active spectral translation of few-picosecond single photon pulses by up to 0.5 THz. By employing an approach based on an electro-optic time lens we demonstrate up to 6-fold spectral compression of heralded single photon pulses with efficiency that enables us to significantly increase single photon flux through a narrow bandpass filter. We realize the required temporal phase manipulation by driving a lithium niobate waveguided electrooptic modulator with 33 dBm sinusoidal RF field at the frequency of either 10 GHz or 40 GHz. We use a phase lock loop to temporally lock the RF field to the 80 MHz repetition rate of approximately 1 ps long optical pulses. Heralded single photon wavepackets are generated by means of spontaneous parametric down-conversion in potassium dihydrogen phosphate (KDP) crystal, which enables preparation of spectrally pure single photon wavepackets without the need for spectral filtering. Spectral shifting is achieved by locking single-photon pulses to the linear slope of sinusoidal 40 GHz RF phase modulation. We verify the spectral shift by performing spectrally resolved heralded single photon counting, using frequency-to-time conversion by means of a highly dispersive chirped fiber Bragg grating. We verify the non-classicality of spectrally shifted single photons by measuring high-visibility Hong-Ou-Mandel interference using a reference single photon pulse. Spectral compression is based on the time lens principle, which requires locking optical pulses to approximately quadratic region of sinusoidal phase modulation. We utilize both 10 GHz and 40 GHz RF driving frequencies. Bandwidth compression is achieved by chirping the single photon pulse using an appropriate length of single-mode fibre and subsequently subjecting it to the action of the time lens. We verify spectral compression directly using the aforementioned spectrally-resolved heralded single photon counting method. We achieve 3-fold spectral compression of 2 nm bandwidth single photon pulses using 40 GHZ modulation frequency, and 6-fold spectral compression of 0.9 nm bandwidth single photon pulses using 10 GHz modulation frequency. Overall transmission of our set-up exceeding 30% enables practical usability of our spectral compression method which we demonstrate experimentally by showing an increased photon flux through a narrowband filter. Our results present an important contribution towards implementing quantum information processing in the spectral-temporal degree of freedom of a photon. In the context of quantum networks they present an enabling tool towards efficient photonic interfacing of different quantum information processing platforms.

Proceedings Article | 15 October 2012 Paper

Generation of spatially pure photon pairs in a multimode nonlinear waveguide using intermodal dispersion

Michal Karpinski, Czeslaw Radzewicz, Konrad Banaszek

Proceedings Volume 8518, 85180J (2012) https://doi.org/10.1117/12.928840

KEYWORDS: Waveguides, Polarization, Photon polarization, Dispersion, Visibility, Optical filters, Single mode fibers, Spatial filters, Ferroelectric materials, Phase matching

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Showing 5 of 8 publications

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