Dr. Michael Förtsch
Stuttgart, Baden-Württemberg, Deutschland
5298 Follower:innen
500+ Kontakte
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My passion: transfer innovative technology to marketable products and improve our daily…
Artikel von Dr. Michael Förtsch
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Why Inclusiveness is important for any Company
Why Inclusiveness is important for any Company
Von Dr. Michael Förtsch
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Jetzt online: FÖRDERUNG VON QUANTENTECHNOLOGIEN - Positionspapier der Deutschen Industrie
Jetzt online: FÖRDERUNG VON QUANTENTECHNOLOGIEN - Positionspapier der Deutschen Industrie
Von Dr. Michael Förtsch
Aktivitäten
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Very honored to join the Wyss Zurich Evaluation Board! I am super excited by the advances in the fields of Regenerative Medicine, Robotics and…
Very honored to join the Wyss Zurich Evaluation Board! I am super excited by the advances in the fields of Regenerative Medicine, Robotics and…
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We are excited to welcome Dr. Carla Kriwet to the Wyss Zurich Evaluation Board!🤗 Dr. Kriwet brings substantial experience in operational roles and…
We are excited to welcome Dr. Carla Kriwet to the Wyss Zurich Evaluation Board!🤗 Dr. Kriwet brings substantial experience in operational roles and…
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Challenge Accepted: Das Summer Camp geht in die dritte Runde und ich freue mich als Speaker mit dabei zu sein! 🚀 Am 28. und 29. August 2024…
Challenge Accepted: Das Summer Camp geht in die dritte Runde und ich freue mich als Speaker mit dabei zu sein! 🚀 Am 28. und 29. August 2024…
Beliebt bei Dr. Michael Förtsch
Berufserfahrung
Ausbildung
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Max Planck Institute for the Science of Light
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Activities and Societies: hbar Omega OSA Student Chapter Erlangen
Ehrenamt
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Finanzvorstand
OSA Studentchapter hbar Omega
– 6 Jahre 6 Monate
Science and Technology
Treasurer
Veröffentlichungen
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Highly efficient generation of single-mode photon pairs using a crystalline whispering gallery mode resonator
Physical Review A
We report a highly efficient source of narrow-band photon pairs based on parametric down-conversion in a crystalline whispering-gallery-mode resonator. Remarkably, each photon of a pair is detected in a single spatial and temporal mode, as witnessed by Glauber's autocorrelation function. We explore the phase-matching conditions in spherical geometries, and determine the requirements for single-mode operation. Understanding these conditions has allowed us to experimentally demonstrate a…
We report a highly efficient source of narrow-band photon pairs based on parametric down-conversion in a crystalline whispering-gallery-mode resonator. Remarkably, each photon of a pair is detected in a single spatial and temporal mode, as witnessed by Glauber's autocorrelation function. We explore the phase-matching conditions in spherical geometries, and determine the requirements for single-mode operation. Understanding these conditions has allowed us to experimentally demonstrate a single-mode pair-detection efficiency of 1.13×106 pairs/s per mW pump power per 26.8 MHz bandwidth.
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Near-infrared single-photon spectroscopy of a whispering gallery mode resonator using energy-resolving transition edge sensors,
Journal of Optics
We demonstrate a method to perform spectroscopy of near-infrared single photons without the need of dispersive elements. This method is based on a photon energy resolving transition edge sensor and is applied for the characterization of widely wavelength tunable narrow-band single photons emitted from a crystalline whispering gallery mode resonator. We measure the emission wavelength of the generated signal and idler photons with an uncertainty of up to 2 nm.
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Identifying modes of large whispering-gallery mode resonators from the spectrum and emission pattern
Optics Express
Identifying the mode numbers in whispering-gallery mode resonators (WGMRs) is important for tailoring them to experimental needs. Here we report on a novel experimental mode analysis technique based on the combination of frequency analysis and far-field imaging for high mode numbers of large WGMRs. The radial mode numbers q and the angular mode numbers p = ℓ-m are identified and labeled via far-field imaging. The polar mode numbers ℓ are determined unambiguously by fitting the frequency…
Identifying the mode numbers in whispering-gallery mode resonators (WGMRs) is important for tailoring them to experimental needs. Here we report on a novel experimental mode analysis technique based on the combination of frequency analysis and far-field imaging for high mode numbers of large WGMRs. The radial mode numbers q and the angular mode numbers p = ℓ-m are identified and labeled via far-field imaging. The polar mode numbers ℓ are determined unambiguously by fitting the frequency differences between individual whispering gallery modes (WGMs). This allows for the accurate determination of the geometry and the refractive index at different temperatures of the WGMR. For future applications in classical and quantum optics, this mode analysis enables one to control the narrow-band phase-matching conditions in nonlinear processes such as second-harmonic generation or parametric down-conversion.
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A Versatile Source of Single Photons for Quantum Information Processing
Nature Communications
The generation of high-quality single-photon states with controllable narrow spectral bandwidths and central frequencies is key to facilitate efficient coupling of any atomic system to non-classical light fields. Such an interaction is essential in numerous experiments for fundamental science and applications in quantum communication and information processing, as well as in quantum metrology. Here we implement a fully tunable, narrow-band and efficient single-photon source based on a…
The generation of high-quality single-photon states with controllable narrow spectral bandwidths and central frequencies is key to facilitate efficient coupling of any atomic system to non-classical light fields. Such an interaction is essential in numerous experiments for fundamental science and applications in quantum communication and information processing, as well as in quantum metrology. Here we implement a fully tunable, narrow-band and efficient single-photon source based on a whispering gallery mode resonator. Our disk-shaped, monolithic and intrinsically stable resonator is made of lithium niobate and supports a cavity-assisted spontaneous parametric down-conversion process. The generated photon pairs are emitted into two highly tunable resonator modes.
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Distributing entanglement with separable states
Physical Review Letters
We experimentally demonstrate a protocol for entanglement distribution by a separable quantum system. In our experiment, two spatially separated modes of an electromagnetic field get entangled by local operations, classical communication, and transmission of a correlated but separable mode between them. This highlights the utility of quantum correlations beyond entanglement for the establishment of a fundamental quantum information resource and verifies that its distribution by a dual classical…
We experimentally demonstrate a protocol for entanglement distribution by a separable quantum system. In our experiment, two spatially separated modes of an electromagnetic field get entangled by local operations, classical communication, and transmission of a correlated but separable mode between them. This highlights the utility of quantum correlations beyond entanglement for the establishment of a fundamental quantum information resource and verifies that its distribution by a dual classical and separable quantum communication is possible.
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Nonlinear Optics in Crystalline Whispering Gallery Resonators,
Optics and Photonics News
Whispering gallery resonators made from crystalline materials are compact, stable and highly tunable. These versatile devices can produce light in the classical and quantum domains, showing promise for applications in spectroscopy, metrology and quantum information schemes.
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Birefringence and dispersion of cylindrically polarized modes in nanobore photonic crystal fiber
Journal of the Optical Society of America B
We demonstrate experimentally and theoretically that a nanoscale hollow channel placed centrally in the solid-glass core of a photonic crystal fiber strongly enhances the cylindrical birefringence (the modal index difference between radially and azimuthally polarized modes). Furthermore, it causes a large split in group velocity and group velocity dispersion. We show analytically that all three parameters can be varied over a wide range by tuning the diameters of the nanobore and the core.
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Entangling Different Degrees of Freedom by Quadrature Squeezing Cylindrically Po- larized Modes
Physical Review Letters
Quantum systems such as, for example, photons, atoms, or Bose-Einstein condensates, prepared in complex states where entanglement between distinct degrees of freedom is present, may display several intriguing features. In this Letter we introduce the concept of such complex quantum states for intense beams of light by exploiting the properties of cylindrically polarized modes. We show that already in a classical picture the spatial and polarization field variables of these modes cannot be…
Quantum systems such as, for example, photons, atoms, or Bose-Einstein condensates, prepared in complex states where entanglement between distinct degrees of freedom is present, may display several intriguing features. In this Letter we introduce the concept of such complex quantum states for intense beams of light by exploiting the properties of cylindrically polarized modes. We show that already in a classical picture the spatial and polarization field variables of these modes cannot be factorized. Theoretically it is proven that by quadrature squeezing cylindrically polarized modes one generates entanglement between these two different degrees of freedom. Experimentally we demonstrate amplitude squeezing of an azimuthally polarized mode by exploiting the nonlinear Kerr effect in a specially tailored photonic crystal fiber. These results display that such novel continuous-variable entangled systems can, in principle, be realized.
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Single Pulse Quantum Imaging,
LOT Report
Entanglement is a key requirement for many quantum protocols and usually formed between two distinct beams. This evokes a fast increasing complexity in growing quantum networks. By superimposing dif- ferent optical modes within one optical beam one
can overcome this problem. To have almost unlimited access to these different modes we plan to investigate the quantum mechanical properties of any arbitrary spatial mode by using a CCD camera . To resolve the quantum mechanical properties of the…Entanglement is a key requirement for many quantum protocols and usually formed between two distinct beams. This evokes a fast increasing complexity in growing quantum networks. By superimposing dif- ferent optical modes within one optical beam one
can overcome this problem. To have almost unlimited access to these different modes we plan to investigate the quantum mechanical properties of any arbitrary spatial mode by using a CCD camera . To resolve the quantum mechanical properties of the light pulses the essential requirements for the CCD camera are high quantum efficiency in combination with low dark current and read-out noise.Andere Autor:innen -
Auszeichnungen/Preise
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Capital Top 40 under 40
Capital
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FAZ Portrait - Michael Förtsch arbeitet an der Revolution der Computerchips
FAZ
https://www.faz.net/aktuell/wirtschaft/unternehmen/trumpf-michael-foertsch-arbeitet-an-computerchip-revolution-19207373.html
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The Photonics 100 2024 - The industry's most innovative people
Electro Optics
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Handelsblatt: Among TOP 30 Talents 2022
Handelsblatt
https://www.handelsblatt.com/unternehmen/management/fuehrungskraefte-diese-30-top-talente-koennten-die-deutsche-wirtschaft-veraendern/28826970.html
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Unter den 175 inspirierendsten Physikern
Deutsche Physikalische Gesellschaft (DPG)
https://www.dpg-physik.de/aktivitaeten-und-programme/weitere/175-inspirierende/michael_foertsch
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FAZ Article on Entrepreneur
FAZ
https://www.faz.net/aktuell/wirtschaft/digitec/der-quantenbaendiger-qant-chef-michael-foertsch-im-portraet-16955084.html
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Otto-Hahn-Medaille
Max Planck Society
https://www.mpl.mpg.de/de/institut/aktuelles/aktuelles/article/otto-hahn-medaille-fuer-michael-foertsch.html
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Promotion (summa cum laude)
Friedrich-Alexander-Universität Erlangen-Nürnberg
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Student Award für herausragende wissenschaftliche Publikationen
Graduate School in Advanced Optical Technologies
https://www5.cs.fau.de/press-releases/article/saot-award-fuer-lme-doktorand/
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Ohmpreis für beste Abschlussarbeit 2010
Universität Erlangen Nürnberg
http://www.physik.uni-erlangen.de/aktuelles/aktuelles2010.shtml
Sprachen
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Deutsch
Muttersprache oder zweisprachig
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Englisch
Verhandlungssicher
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Spanisch
Grundkenntnisse
Weitere Aktivitäten von Dr. Michael Förtsch
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The Handelsblatt Summer Camp is back for its third round, and our CEO Dr. Michael Förtsch is once again joining the conversation! 🚀 Today and…
The Handelsblatt Summer Camp is back for its third round, and our CEO Dr. Michael Förtsch is once again joining the conversation! 🚀 Today and…
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Die letzten Stunden vor dem Camp beginnen. Die Vorfreude steigt mit jeder Minute etwas mehr. Petrus und die Deutsche Bahn sind auf unserer Seite. Das…
Die letzten Stunden vor dem Camp beginnen. Die Vorfreude steigt mit jeder Minute etwas mehr. Petrus und die Deutsche Bahn sind auf unserer Seite. Das…
Beliebt bei Dr. Michael Förtsch
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💫 𝗕𝗲𝘆𝗼𝗻𝗱 𝗧𝗼𝗺𝗼𝗿𝗿𝗼𝘄: 𝗧𝗿𝗮𝗻𝘀𝗳𝗼𝗿𝗺𝗮𝘁𝗶𝘃𝗲 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗦𝗵𝗮𝗽𝗶𝗻𝗴 𝗢𝘂𝗿 𝗪𝗼𝗿𝗹𝗱. - Was glaubst Du? Welche…
💫 𝗕𝗲𝘆𝗼𝗻𝗱 𝗧𝗼𝗺𝗼𝗿𝗿𝗼𝘄: 𝗧𝗿𝗮𝗻𝘀𝗳𝗼𝗿𝗺𝗮𝘁𝗶𝘃𝗲 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗦𝗵𝗮𝗽𝗶𝗻𝗴 𝗢𝘂𝗿 𝗪𝗼𝗿𝗹𝗱. - Was glaubst Du? Welche…
Beliebt bei Dr. Michael Förtsch
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UNFASSBAR: PHISHING PER BRIEF Die Betrugsmasche hat aus meiner Sicht ein inzwischen unfassbares und gruseliges Niveau erreicht. Seit letzter Woche…
UNFASSBAR: PHISHING PER BRIEF Die Betrugsmasche hat aus meiner Sicht ein inzwischen unfassbares und gruseliges Niveau erreicht. Seit letzter Woche…
Beliebt bei Dr. Michael Förtsch
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I am looking forward to exciting discussions at the INSPIRATION PANEL at #munich Handelsblatt Media Group 🤝 Together with Moritz Gräter, Prof…
I am looking forward to exciting discussions at the INSPIRATION PANEL at #munich Handelsblatt Media Group 🤝 Together with Moritz Gräter, Prof…
Beliebt bei Dr. Michael Förtsch
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💫 Beyond Tomorrow: Transformative Technologies Shaping Our World. What a great pleasure to contribute at the panel of this year’s Handelsblatt…
💫 Beyond Tomorrow: Transformative Technologies Shaping Our World. What a great pleasure to contribute at the panel of this year’s Handelsblatt…
Geteilt von Dr. Michael Förtsch
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wow - albeit not a cure for #ALS- what a wonderful thing .. I wish this was possible a couple years back.. I remember missing my moms voice soo much…
wow - albeit not a cure for #ALS- what a wonderful thing .. I wish this was possible a couple years back.. I remember missing my moms voice soo much…
Beliebt bei Dr. Michael Förtsch
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Thanks Tommaso; we need more of these reflected statements for Quantum Technologies in general. Quantum Computing does NOT solve every problem…
Thanks Tommaso; we need more of these reflected statements for Quantum Technologies in general. Quantum Computing does NOT solve every problem…
Geteilt von Dr. Michael Förtsch
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Unsurprsingly, Tommaso is right Forschungszentrum Jülich Quantensysteme Peter Grünberg Institut (PGI)
Unsurprsingly, Tommaso is right Forschungszentrum Jülich Quantensysteme Peter Grünberg Institut (PGI)
Beliebt bei Dr. Michael Förtsch
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Countdown to our QUBE-I cubesat mission! In a view hours our quantum communication mission QUBE is being launched. #MPL and #FAU 's payload contains…
Countdown to our QUBE-I cubesat mission! In a view hours our quantum communication mission QUBE is being launched. #MPL and #FAU 's payload contains…
Beliebt bei Dr. Michael Förtsch