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Dr. Christof Eigner

Contact
Publications
Dr. Christof Eigner

Integrated Quantum Optics

Docent - Group leader "Technology"

Phone:
+49 5251 60-5896
Office:
P8.3.05
Visitor:
Pohlweg 47-49
33098 Paderborn

Open list in Research Information System

2019

Nonlinear integrated quantum electro-optic circuits

K. Luo, S. Brauner, C. Eigner, P.R. Sharapova, R. Ricken, T. Meier, H. Herrmann, C. Silberhorn, Science Advances (2019)

<jats:p>Future quantum computation and networks require scalable monolithic circuits, which incorporate various advanced functionalities on a single physical substrate. Although substantial progress for various applications has already been demonstrated on different platforms, the range of diversified manipulation of photonic states on demand on a single chip has remained limited, especially dynamic time management. Here, we demonstrate an electro-optic device, including photon pair generation, propagation, electro-optical path routing, as well as a voltage-controllable time delay of up to ~12 ps on a single Ti:LiNbO<jats:sub>3</jats:sub> waveguide chip. As an example, we demonstrate Hong-Ou-Mandel interference with a visibility of more than 93 ± 1.8%. Our chip not only enables the deliberate manipulation of photonic states by rotating the polarization but also provides precise time control. Our experiment reveals that we have full flexible control over single-qubit operations by harnessing the complete potential of fast on-chip electro-optic modulation.</jats:p>


Engineering integrated photon pair sources and multiplexed detectors (Conference Presentation)

E. Meyer-Scott, N. Prasannan, N. Montaut, J. Tiedau, C. Eigner, G. Harder, L. Sansoni, T. Nitsche, H. Herrmann, R. Ricken, V. Quiring, T.J. Bartley, S. Barkhofen, C. Silberhorn, in: Advances in Photonics of Quantum Computing, Memory, and Communication XII, 2019

DOI


2018

Imaging of 180∘ ferroelectric domain walls in uniaxial ferroelectrics by confocal Raman spectroscopy: Unraveling the contrast mechanism

M. Rüsing, S. Neufeld, J. Brockmeier, C. Eigner, P. Mackwitz, K. Spychala, C. Silberhorn, W.G. Schmidt, G. Berth, A. Zrenner, S. Sanna, Physical Review Materials (2018)

DOI


Engineering integrated sources of entangled photon pairs

E. Meyer-Scott, N. Prasannan, N. Montaut, J. Tiedau, G. Harder, L. Sansoni, H. Herrmann, C. Eigner, R. Ricken, V. Quiring, T.J. Bartley, S. Barkhofen, C. Silberhorn, in: Frontiers in Optics / Laser Science, 2018

DOI


Streak camera imaging of single photons at telecom wavelength

M. Allgaier, V. Ansari, C. Eigner, V. Quiring, R. Ricken, J.M. Donohue, T. Czerniuk, M. Aßmann, M. Bayer, B. Brecht, C. Silberhorn, Applied Physics Letters (2018)

DOI


High-power waveguide resonator second harmonic device with external conversion efficiency up to 75%

M. Stefszky, R. Ricken, C. Eigner, V. Quiring, H. Herrmann, C. Silberhorn, Journal of Optics (2018)

DOI


Imaging of 180∘ ferroelectric domain walls in uniaxial ferroelectrics by confocal Raman spectroscopy: Unraveling the contrast mechanism

M. Rüsing, S. Neufeld, J. Brockmeier, C. Eigner, P. Mackwitz, K. Spychala, C. Silberhorn, W.G. Schmidt, G. Berth, A. Zrenner, S. Sanna, Physical Review Materials (2018)

DOI


Periodically poled ridge waveguides in KTP for second harmonic generation in the UV regime

C. Eigner, M. Santandrea, L. Padberg, M.F. Volk, C.E. Rüter, H. Herrmann, D. Kip, C. Silberhorn, Optics Express (2018)

DOI


Heralded generation of high-purity ultrashort single photons in programmable temporal shapes

V. Ansari, E. Roccia, M. Santandrea, M. Doostdar, C. Eigner, L. Padberg, I. Gianani, M. Sbroscia, J.M. Donohue, L. Mancino, M. Barbieri, C. Silberhorn, Optics Express (2018)

DOI


High-performance source of spectrally pure, polarization entangled photon pairs based on hybrid integrated-bulk optics

E. Meyer-Scott, N. Prasannan, C. Eigner, V. Quiring, J.M. Donohue, S. Barkhofen, C. Silberhorn, Optics Express (2018)

DOI


2017

Waveguide Cavity Resonator as a Source of Optical Squeezing

M. Stefszky, R. Ricken, C. Eigner, V. Quiring, H. Herrmann, C. Silberhorn, Physical Review Applied (2017)

DOI


Highly efficient frequency conversion with bandwidth compression of quantum light

M. Allgaier, V. Ansari, L. Sansoni, C. Eigner, V. Quiring, R. Ricken, G. Harder, B. Brecht, C. Silberhorn, Nature Communications (2017)

DOI


A two-channel, spectrally degenerate polarization entangled source on chip

L. Sansoni, K.H. Luo, C. Eigner, R. Ricken, V. Quiring, H. Herrmann, C. Silberhorn, npj Quantum Information (2017)

DOI


Fabrication of low-loss Rb-exchanged ridge waveguides in z-cut KTiOPO_4

M.F. Volk, C.E. Rüter, M. Santandrea, C. Eigner, L. Padberg, H. Herrmann, C. Silberhorn, D. Kip, Optical Materials Express (2017)

DOI


Waveguide Cavity Resonator as a Source of Optical Squeezing

M. Stefszky, R. Ricken, C. Eigner, V. Quiring, H. Herrmann, C. Silberhorn, Physical Review Applied (2017)

DOI


A monolithic, doubly-resonant parametric down-conversion source for Caesium Raman memories

B. Brecht, O. Lazo-Arjona, K.T. Kaczmarek, T. Parker, R. Ricken, V. Quiring, C. Eigner, K.H. Luo, H. Herrmann, C. Silberhorn, I.A. Walmsley, in: Frontiers in Optics 2017, 2017

DOI


Fast time-domain measurements on telecom single photons

M. Allgaier, G. Vigh, V. Ansari, C. Eigner, V. Quiring, R. Ricken, B. Brecht, C. Silberhorn, Quantum Science and Technology (2017)

DOI


2016

Identification of ferroelectric domain structure sensitive phonon modes in potassium titanyl phosphate: A fundamental study

M. Rüsing, C. Eigner, P. Mackwitz, G. Berth, C. Silberhorn, A. Zrenner, Journal of Applied Physics (2016)

DOI


Open list in Research Information System

Head

Prof. Dr. Christine Silberhorn

Integrated Quantum Optics

Lehrstuhlinhaberin

Christine Silberhorn
Phone:
+49 5251 60-5884
Fax:
+49 5251 60-5886
Office:
P8.3.10

The University for the Information Society