Humboldt-Universität zu Berlin - Faculty of Mathematics and Natural Sciences - Nonlinear Quantum Optics

Publications

Publications by PhD students

Kviatkovsky, I., Chrzanowski, H. M., Avery, E. G., Bartolomaeus, H., & Ramelow, S. (2020). Microscopy with undetected photons in the mid-infrared. Science Advances, 6(42), eabd0264

 

Vanselow, A., Kaufmann, P., Chrzanowski, H. M., & Ramelow, S. (2019). Ultra-broadband SPDC for spectrally far separated photon pairs. Optics letters, 44(19), 4638-4641.

 

Vanselow, A., Kaufmann, P., Zorin, I., Heise, B., Chrzanowski, H., & Ramelow, S. (2019, April). Mid-infrared frequency-domain optical coherence tomography with undetected photons. Quantum Information and Measurement (pp. T5A-86) Optical Society of America

 

Placke, M., & Ramelow, S. (2020). Engineering AlGaAs-on-insulator toward quantum optical applications. Optics Letters, 45(24), 6763-6766

 

Vanselow, A., Kaufmann, P., Zorin, I., Heise, B., Chrzanowski, H. M., & Ramelow, S. (2020). Frequency-domain optical coherence tomography with undetected mid-infrared photons. Optica, 7(12), 1729-1736

 

Placke, M., & Ramelow, S. (2020). Ultra strong parametric nonlinearities in AlGaAs-on-insulator waveguides. arXiv preprint arXiv:2008.11531

 

Mann, Felix, Helen M. Chrzanowski, and Sven Ramelow. "Low random duty-cycle errors in periodically poled KTP revealed by sum-frequency generation." Optics Letters 46.13 (2021): 3049-3052.

 

F. Mann, H. M. Chrzanowski, F. Gewers, M. Placke, and S. Ramelow, “Low-noise quantum frequency conversion in a monolithic cavity with bulk periodically poled potassium titanyl phosphate,” Phys. Rev. Appl. 20, 054010 (2023)

 

Publications by Dr. Sven Ramelow

  • 35 publications in peer-reviewed journals

 including: 5 papers in Nature, 1 in Science, 2 in PNAS, 3 in PRL, and 1 in Optica

  • 7 publications as first author (incl. “equal contribution”)
  • 2 publication as last author
  • 1 granted patent and 1 pending patent
  • 3 more publications in preparation, 1 of which is under peer-review and published on the arXiv

 

Peer-reviewed publications:

(first authors who were directly co-supervised PhD students underlined)

[35] A. Mohanty, M. Zhang, A. Dutt, S. Ramelow, P. Nussenzveig, M. Lipson
Quantum Interference between Transverse Spatial Waveguide Modes
in print Nature Communication, Nov 2016, preprint: arXiv:1601.00121

[34] S. Clemmen, A. Farsi, S. Ramelow, A. L. Gaeta, Ramsey interference with single photons
       in print, Phys. Rev. Lett., Nov 2016, preprint: arXiv:1601.01105

[33] Y. Okawachi, M. Yu, K. Luke, D. O. Carvalho, S. Ramelow, A. Farsi, M. Lipson, A. L. Gaeta
Dual-pumped degenerate Kerr oscillator in a silicon nitride microresonator,
Optics Letters  40, 5267 (2015)

[32] P. S. Donvalkar, S. Ramelow, S. Clemmen, A

 

Continuous generation of Rubidium vapor in hollow-core photonic band-gap fibers,
Optics Letters 40, 5379 (2015)

[31] S. A. Miller, Y. Okawachi, S. Ramelow, K. Luke, A. Dutt, A. Farsi, A. L. Gaeta, M. Lipson,
Tunable frequency combs based on dual microring resonators,
Opt. Express 23 (16), 21527 (2015)

[30]      C.Schaeff, R. Polster, M. Huber, S. Ramelow, A. Zeilinger,
Experimental access to higher-dimensional entangled quantum systems using integrated optics, Optica 2, 523 (2015)

[29] William N Plick, R. Fickler, R. Lapkiewicz, S. Ramelow,
       An extension of the Wigner inequality: theory and experiment,
       Phys. Rev. A 91, 022124 (2015)

[28] G. Humer, M. Peev, C.Schaeff, S. Ramelow, M. Stip_evi_, R. Ursin,
A simple and robust method for characterization of afterpulsing in single photon detectors,
Journal of Lightwave Technology 99, 1 (2015)

[27] A. Khrennikov, S. Ramelow, R. Ursin, B. Wittmann, J. Kofler, Irina Basieva,
On the equivalence of Clauser-Horne and Eberhard inequality based tests,
Physica Scripta T163, 014019 (2014)

[26] S. Ramelow, A. Farsi, S. Clemmen, J.S. Levy, A.R. Johnson, Y. Okawachi, M.R.E. Lamont,
M. Lipson, A.L. Gaeta, Strong polarization mode coupling in microresonators,
Optics Letters 39, 5134 (2014)

[25] J.-Å. Larsson, M. Giustina, J. Kofler, B. Wittmann, R. Ursin, S. Ramelow,
Bell violation with entangled photons, free of the coincidence-time loophole,
Phys. Rev. A 90, 032107 (2014)

[24] G. Baretto Lemos, V. Borish, G. D. Cole, S. Ramelow, R. Lapkiewicz, A. Zeilinger,
Quantum Imaging with Undetected Photons,
Nature 512, 409 (2014)

[23] R. Fickler, R. Lapkiewicz, S. Ramelow, A. Zeilinger,
Quantum Entanglement of Complex Photon Polarization Patterns in Vector Beams,
Phys. Rev. A 89, 060301(R) (2014)

[22] M. Krenn, M. Huber, R. Fickler, R. Lapkiewicz, S. Ramelow, A. Zeilinger,
Generation and confirmation of a (100_100)-dimensional entangled quantum system,
PNAS 111, 6243 (2014)

[21] R. Fickler, M. Krenn, R. Lapkiewicz, S. Ramelow, A. Zeilinger,
       Real-time imaging of quantum entanglement,
       Scientific Reports 3, 1914 (2013)

[20] F. Steinlechner, S. Ramelow, M. Jofre, M. Gilaberte, T. Jennewein,
J. P. Torres, M. W. Mitchell, V. Pruneri,
Phase-stable source of polarization-entangled photons in a linear double-pass configuration,
Optics Express 21, 11943 (2013)

[19] M. Giustina*, A. Mech*, S. Ramelow*, B. Wittmann*, (*equally contributing),
       J. Kofler, A. Lita, B. Calkins, T. Gerrits, S.W. Nam, R. Ursin, A. Zeilinger,
       Bell violation using entangled photons without the fair-sampling assumption,
       Nature 497, 227 (2013)

[18] S. Ramelow*, A. Mech*, M. Giustina*, (*equally contributing), S. Gröblacher, W. Wieczorek, J. Beyer,    A. Lita, B. Calkins, T. Gerrits, S. W. Nam, A. Zeilinger, R. Ursin,
       Highly efficient heralding of entangled single photons,
       Optics Express 21, 6707 (2013)

[17] W. N. Plick, M. Krenn, S. Ramelow, R. Fickler, and A. Zeilinger,
       Quantum orbital angular momentum of elliptically-symmetric light,
       Phys. Rev. A 87, 033806 (2013)

[16] M. Krenn, R. Fickler, M. Huber, R. Lapkiewics, W.N. Plick, S. Ramelow, A. Zeilinger,
       Entangled singularity patterns of photons in Ince-Gauss modes,
       Phys. Rev. A 87, 012326 (2013)

[15] X. Ma, J. Kofler, A. Qarry, N. Tetik, T. Scheidl, R. Ursin, S. Ramelow, T. Herbst, L. Ratschbacher,
       A. Fedrizzi, T. Jennewein, A. Zeilinger,
       Quantum erasure with causally disconnected choice,
       PNAS 110, 1221 (2013)

[14] R. Fickler, R. Lapkiewicz, W.N. Plick, M. Krenn, C. Schaeff, S. Ramelow, A. Zeilinger,
       Quantum Entanglement of High Angular Momenta,
       Science 338, 640, (2012)

[13]      C.Schaeff, R. Polster, R. Lapkiewicz, R. Fickler, S. Ramelow, A. Zeilinger,
Scalable fiber integrated source for higher-dimensional path-entangled photons,
Optics Express 20, 16145 (2012)

[12] S. Ramelow, A. Fedrizzi, A. Poppe, N. K. Langford, and A. Zeilinger,
       Polarization-entanglement conserving frequency conversion of photons,
       Phys. Rev. A 85, 013845 (2012)

[11] B. Wittmann*, S. Ramelow*, (*equally contributing), F. Steinlechner, N. K. Langford, N. Brunner,
       H. Wiseman, R. Ursin, A. Zeilinger,
       Loophole-free Einstein-Podolski-Rosen experiment via quantum steering,
       New J. Phys. 14, 053030 (2012)

[10] N. K. Langford, S. Ramelow, R. Prevedel, W. J. Munro, G. J. Milburn, A. Zeilinger,
       Efficient quantum computing using coherent photon conversion,
       Nature 478, 360, (2011)

[9]   R. Lapkiewics, P. Li, C. Schäff, N. K. Langford, S. Ramelow, M. Wiesniak, A. Zeilinger
       Experimental non-classicality of an indivisible quantum system,
       Nature 490, 490, (2011)

[8]   T. Scheidl, R. Ursin, J. Kofler, S. Ramelow, X. Ma, T. Herbst, L. Ratschbacher, A. Fedrizzi,
       N. K. Langford, T. Jennewein, A. Zeilinger,
       Violation of local realism with freedom of choice,
       PNAS 107, 19708 (2010)

[7]   H. Hübel, D. R. Hamel, A. Fedrizzi, S. Ramelow, K. J. Resch, T. Jennewein,
Direct generation of photon triplets using cascaded photon-pair sources,
Nature 466, 601 (2010)

[6]   S. Ramelow*, A. Fedrizzi*, (*equally contributing), A.M. Steinberg, A.G. White,
Matchgate quantum computing and non-local process analysis,
New J. Phys. 12, 083027 (2010)

[5]   S. Ramelow, L. Ratschbacher, A. Fedrizzi, N. K. Langford, A. Zeilinger,
Discrete, Tunable Color Entanglement,
Phys. Rev. Lett. 103, 253601 (2009)

[4]   T. Scheidl, R. Ursin , A. Fedrizzi, S. Ramelow , X. Ma, T. Herbst, R. Prevedel, L. Ratschbacher,
       J. Kofler, T. Jennewein and A. Zeilinger,
       Feasibility of 300 km quantum key distribution with entangled states,
       New J. Phys. 11, 085002 (2009)

[3]   M. Scholz, T. Aichele, S. Ramelow, and O. Benson,
       Deutsch-Jozsa Algorithm using Triggered Single Photons from a Single Quantum Dot,
       Phys. Rev. Lett. 96, 180501 (2006)

[2]   C.I. Pakes, S. Ramelow, S. Prawer and D.N. Jamieson,
Nanoscale electrical characterisation of trap-assisted quasi-breakdown fluctuations in SiO2,
Appl. Phys. Lett. 84, 3142, (2004)

[1]   C.I. Pakes, D.P. George, S. Ramelow, A. Cimmino, D.N. Jamieson, S. Prawer,
Manipulation of  single magnetic protein particles using atomic force microscopy,
J. Magn. Mat. 272, E1232 (2004)

 

For peer-review submitted and currently prepared publications:

[1]   S. Ramelow, A. Farsi, S. Clemmen, D. Orquiza, K. Luke, M. Lipson, A. L. Gaeta,
Silicon-Nitride Platform for Narrowband Entangled Photon Generation,
submitted to Nature Communication, May 2016, preprint: arXiv:1508.04358
 

[2]   A. Farsi, C. Joshi, T. Gerrits, R. Mirin, S. W. Nam, V. Verma, S. Ramelow, A. L. Gaeta,
Temporal Magnification for Picosecond Resolution at the Single-Photon Level, in preparation

[3]   S. Clemmen, A. Farsi, S. Ramelow, A. L. Gaeta,
Towards a Quasi-Deterministic Single-Photon Source Based on Spectral Multiplexing, in preparation

[4]   C. Joshi, A. Farsi, S. Clemmen, S. Ramelow, A. L. Gaeta, Experimental Frequency-Multiplexing for Generating Quasi-Deterministic Single Photons, in preparation

      

 

Publications without peer review process:

[1]   J. Kofler, S. Ramelow, M. Giustina, A. Zeilinger, On 'Bell violation using

       entangled photons without the fair-sampling assumption', arXiv:1307.6475 (2013)

[2]   W. N. Plick, R. Lapkiewicz, S. Ramelow, A. Zeilinger, The Forgotten Quantum

       Number: A short note on the radial modes of Laguerre-Gauss beams, arXiv:1306.6517 (2013)

[3]   J. Kofler, S. Ramelow, M. Giustina, R. Ursin, A. Zeilinger, Quantum experiment preludes the endgame for local realism – photonic Bell violation closes the fair-sampling loophole, 2physics.com, June 09, (2013)

[4]   R. Lapkiewicz, P. Li, C. Schaeff, N.K. Langford, S. Ramelow, M. Wiesniak, A. Zeilinger,
Comment on" Two Fundamental Experimental Tests of Nonclassicality with Qutrits"

       arXiv:1305.5529 (2013)

[5]   N. K. Langford, S. Ramelow and R. Prevedel,

A New Scheme for Photonic Quantum Computing, 2physics.com, Nov 13, (2011)

 

Patents:

[1] Patent application for “Quantum Imaging with Undetected Photons“ (see Nature 512, 409, 2014)

      Inventors: G. Baretto-Lemos, V. Borish, S. Ramelow, R. Lapkiewicz, A. Zeilinger,

      European Patent Application No. 13 198 550.9 (2013)

[2] Patent for “Coherent Photonic Frequency Conversion (CPFC) For Quantum Computing Using

      Pumped Four-Wave Mixing Processes” (see Nature 478, 360, 2011),

      Inventors: N.K. Langford and S. Ramelow, US-Patent US 2010/0079833, patent granted 2012

 

Book chapters:

 

  1. Aichele, M. Scholz, S. Ramelow, O. Benson, "Non-Classical Light from Artificial Atoms"
    Book Chapter in Adv. Atomic and Mol. Physics, Vol. 53, G. Rempe and M. Scully eds. (2006)

 

Invited presentations:

invited talk: “A Single-Photon Ramsey-Interferometer”, SSEQL2016, Warsaw, Mar. 2016

invited seminar talk: “Silicon-Nitride Integrated Source of Narrowband Entangled Photon-Pairs”,
Seminar at TU Vienna, Rauschenbeutel Group, Nov. 2015

invited seminar talk: “Silicon-Nitride Integrated Source of Narrowband Entangled Photon-Pairs”,
Seminar at Humboldt University, Berlin, Germany, Aug. 2015

invited talk: “A Single-Photon Ramsey-Interferometer”, Växjö Conference: Quantum Theory: from foundations to technologies (QTFT), Linnaeus University, Sweden, June 2015

invited seminar talk: “Silicon-Nitride Integrated Source of Narrowband Entangled Photon-Pairs”,
Seminar at IQOQI Vienna, Austria, June 2015

invited seminar talk: “Silicon-Nitride Integrated Source of Narrowband Entangled Photon-Pairs”,
Seminar at Ghent University, Belgium, June 2015

invited talk: “On Closing Loopholes in Bell Experiments”, Quantum [Un]Speakables II: 50 Years Bell's Theorem, University of Vienna & Austrian Academy of Sciences, June 2014

 

invited talk: “On Closing Loopholes in Bell Experiments”, Växjö Conference on Quantum Theory: from Problems to Advances (QTPA), Linnaeus University, Sweden, June 2014 

 

invited seminar talk: “Coherent Photon Conversion“, ECE-EDS Seminar, Cornell University, School of Electrical and Computer Engineering, Feb 2014

invited talk: “Coherent Photon Conversion (CPC) for Scalable Non-Linear Optical Quantum Computing”, International Conference on Quantum Optics, Obergurgl, Austria, February 2012

invited seminar talk: “Coherent Photon Conversion (CPC) for Scalable Non-Linear Optical Quantum”, Seminar at NIST Boulder, Boulder Colorado, USA, Feb. 2012

invited seminar talk: “Coherent Photon Conversion (CPC) for Scalable Non-Linear Optical Quantum Computing”, Seminar at Cornell University, Ithaca NY, USA, Feb. 2012

invited talk: “Single Photon Conversion”, CoQuS Seminar, Vienna, Austria, June 2010

invited talk: “An Energy Quantum Eraser”, Workshop - “What exists in the quantum world?“, International Academy Traunkirchen, Austria, 2010


invited Talk: “SPUC as Quantum Interface“, SFB mini-workshop, Few qubit applications and measurement-based quantum computation, Innsbruck, April 2008

 

Contributed presentations:

 

  1. Ramelow, A. Farsi, S. Clemmen, D. Orquiza, K. Luke, M. Lipson, A. L. Gaeta,
    Silicon-Nitride Integrated Source of Narrowband Entangled Photon-Pairs,
    ÖPG/SPG Jahrestagung Sept. 2015, Fundamental Physics, Experimental Methods III, ID 527
  2. Ramelow, S. Clemmen, A. Farsi, A.L. Gaeta,
    A single-photon Ramsey-interferometer,
    ÖPG/SPG Jahrestagung Sept. 2015, Quantum Information II, ID 513
  3. Ramelow, A. Farsi, S. Clemmen, D. Orquiza, K. Luke, M. Lipson, A. L. Gaeta,
    Chip-integrated source of entangled narrowband photons with full spectral control
    Cleo 2015, FM2A.7
  4. Ramelow, “Towards deterministic nonlinear quantum optics using CPC (coherent photon conversion)”,
    Single Photon Workshop 2013, ORNL Oakridge, USA
  5. Ramelow, “Towards deterministic nonlinear quantum optics using CPC”, ONNA 2013: Workshop on Optical Nanofibre Applications, Okinawa, Japan, June 2013
  6. Ramelow, B.Wittmann, F.Steinlechner, N.K.Langford, N.Brunner, H.Wiseman, R.Ursin, A.Zeilinger, “Loophole-free Quantum Steering”,
    APS March Meeting Boston, 2012
  7. Ramelow, N.K. Langford, R. Prevedel, W.J. Munro, G.J. Milburn, and A. Zeilinger
    “Coherent Photon Conversion enabling Nonlinear Optical Quantum Computing”,
    DPG Meeting Dresden March 2011
  8. Ramelow, L. Ratschbacher, A. Fedrizzi, N. K. Langford, A. Zeilinger
    Contributed Post-Deadline talk: Discrete, Tunable Color-Entanglement,
    Cleo Munich 2009

 

Conference proceedings:

 

[P21]   S. Ramelow, A. Farsi, S. Clemmen, K. Luke, M. Lipson, A.L. Gaeta,
            Monolithic Source of Tunable Narrowband Photons for Future Quantum Networks,
            CLEO: QELS_Fundamental Science, FM2A. 7, (2015), publication in preparation

 

[P20]   J. Cardenas, S. Miller, Y. Okawachi, S. Ramelow, A.G. Griffith, A. Farsi, A.L. Gaeta, M. Lipson

            Parametric Frequency Conversion in Silicon Carbide Waveguides

            CLEO: Science and Innovations, SF1D. 7 (2015)

 

[P19]   A. Mohanty, M. Zhang, S. Ramelow, P. Nussenzveig, M. Lipson,
            Hong-Ou-Mandel Interference between Transverse Spatial Waveguide Modes,
            CLEO: QELS_Fundamental Science, FTu4A. 5 (2015), publication in preparation

 

[P18]   A. Farsi, S. Clemmen, S. Ramelow, A.L. Gaeta,
            Low-Noise Quantum Frequency Translation of Single Photons

            CLEO: QELS_Fundamental Science, FM3A. 4 (2015), publication in preparation

 

[P17]   A. Farsi, S. Clemmen, S. Ramelow, A.L. Gaeta,
            Ramsey Interferometry for Manipulation of Single Photons

            CLEO: QELS_Fundamental Science, FM3A. 6 (2015), publication in preparation

 

[P16]   R. Fickler, M. Krenn, R. Lapkiewicz, M. Huber, W.N. Plick, S. Ramelow, A. Zeilinger

            Increasing the Quantum Number, Dimensionality and Complexity of Entanglement

            CLEO: Science and Innovations, STu1L. 6 (2015)

 

[P15]   Y. Okawachi, S. Miller, S. Ramelow, K. Luke, A. Farsi, M. Lipson, A.L. Gaeta

            Spectrally Efficient Comb Source with Coupled Microresonators
            CLEO: Science and Innovations, SM2M. 3 (2015)

 

[P14]  S. Clemmen, A. Farsi, S. Ramelow, A. L. Gaeta, Ramsey interferometry with photons

           CLEO: QELS Fundamental Science, Postdeadline Session 1 (FTh5A), San Jose, USA, (2014)

 

[P13]   W. Plick, R. Fickler, R. Lapkiewicz, and S. Ramelow, A robust Bell inequality without two-   outcome measurements, Quantum Information and Measurement, Berlin, Germany,

           Joint Poster Session (JW2A), (2014)

 

[P12]   M. Giustina, A. Mech, S. Ramelow, B. Wittmann, J. Beyer, A. Lita, B. Calkins, T. Gerrits,

  1. W. Nam, R. Ursin, and A. Zeilinger, Bell violation with entangled photons, free of the fair-sampling assumption, International Quantum Electronics Conference, Munich, Germany,

    Fundamentals of Quantum Information (IB_7), (2013)

 

[P11]   R. Fickler, M. Krenn, R. Lapkiewicz, S. Ramelow, A. Zeilinger, Coincidence Imaging of          Photonic Quantum Entanglement with Complex Mode Structures, Frontiers in Optics, USA

           Ghost Imaging and Entanglement (FW5D), (2013)

 

[P10]   F. O. Steinlechner, S. Ramelow, M. Jofre, M. Gilaberte, T. Jennewein, J. P. Torres, M. W. Mitchell, V. Pruneri, Ultra-bright source of polarization-entangled photons in a linear double-        pass configuration, International Quantum Electronics Conference, Munich, Germany,

           Photon Pair Sources and Detectors (IB_1), (2013)

 

[P9]     W. Plick, M. Krenn, R. Fickler, S. Ramelow, A. Zeilinger, Unique Properties and Prospects:        Quantum Theory of the Orbital Angular Momentum of Ince-Gauss Beams,
    APS March Meeting Abstracts 1, 1005 (2012)

 

[P8]     M. Krenn, R. Fickler, W. Plick, R. Lapkiewicz, S. Ramelow, A. Zeilinger, Entanglement of Ince-    Gauss Modes of Photons, APS March Meeting Abstracts 1, 1006 (2015)

 

[P7]     S. Ramelow, B Wittmann, F Steinlechner, NK Langford, N Brunner, H. Wiseman, R. Ursin,
    A. Zeilinger, Loophole-free Quantum Steering, APS Meeting Abstracts 1, 30007 (2012)

 

[P6]     K.J. Resch, H. Hübel, D.R. Hamel, A. Fedrizzi, S. Ramelow, T. Jennewein, J. Lavoie,

  1. Kaltenbaek, and M. Piani, Photon Triplets and Bound Entanglement, ICO International Conference on Information Photonics (IP), ICO-IP.2011.5953822, IEEE, (2011)

 

[P5]     J. Kofler, T. Scheidl, R. Ursin, S. Ramelow, X.S. Ma, T. Herbst, L. Ratschbacher, A. Fedrizzi,
           N. Langford, T. Jennewein, A. Zeilinger, Violation of local realism with freedom of choice,
           APS Meeting Abstracts 1, 29007 (2011)

 

[P4]     R. Fickler, P. Li, R. Lapkiewicz, M. Krenn, C. Schaeff, M. Wiesniak, S. Ramelow, A. Zeilinger,   Entanglement of very high orbital angular momentum, Laser Science, San Jose, USA,

           Orbital Angular Momentum and Applications III (LThC), (2011)

 

[P3]     R. Lapkiewicz, P. Li, C. Schaeff, N. Langford, S. Ramelow, M. Wiesniak, A. Zeilinger
    Experimental non-classicality of an indivisible system, APS Meeting Abstracts 1, 29008 (2011)

 

[P2]     A. Fedrizzi, S. Ramelow, M. Almeida, M.A. Broome, B.P. Lanyon, A.M. Steinberg, A.G. White

  Linear Optics Implementation of Symmetric Matchgates, European Quantum Electronics   Conference, Munich Germany, Multiphotons for Quantum Information (ED3), (2009)

 

[P1]     S. Ramelow, L. Ratschbacher, A. Fedrizzi, N.K. Langford, A. Zeilinger,
  Discrete, Tunable Color-Entanglement, Cleo Munich 2009, Germany,
  Postdeadline session B (PDB_8), (2009)