Pu­bli­ka­tio­nen

S. Kucera, C. Haen, E. Arenskötter, T. Bauer, J. Meiers, M. Schäfer, R. Boland, M. Yahyapour, M. Lessing, R. Holzwarth, C. Becher, J. Eschner
Demonstration of quantum network protocols over a 14-km urban fiber link. npj Quantum Inf 10, 88 (2024)
DOI: https://doi.org/10.1038/s41534-024-00886-x (open access)

I. Karapatzakis, J. Resch, M. Schrodin, P. Fuchs, M. Kieschnick, J. Heupel, L. Kussi, C. Sürgers, C. Popov, J. Meijer, C. Becher, W. Wernsdorfer, D. Hunger
Microwave Control of the Tin-Vacancy Spin Qubit in Diamond with a Superconducting Waveguide
Phys. Rev. X 14, 031036 (2024)
DOI: https://doi.org/10.1103/PhysRevX.14.031036 (open access)

T. Strobel, S. Kazmaier, T. Bauer, M. Schäfer, A. Choudhary, N. Lal Sharma, R. Joos, C. Nawrath, J. H. Weber, W. Nie, G. Bhayani, L. Wagner, A. Bisquerra, M. Geitz, R.-P. Braun, C. Hopfmann, S. L. Portalupi, C. Becher, P. Michler
High-fidelity distribution of triggered polarization-entangled telecom photons via a 36 km intra-city fiber network
Optica Quantum 2, 274-281 (2024)
DOI: https://doi.org/10.1364/OPTICAQ.530838 (open access)

J. Körber, J. Heiler, P. Fuchs, P. Flad, E. Hesselmeier, P. Kuna, J. Ul-Hassan, W. Knolle, C. Becher, F. Kaiser, J. Wrachtrup
Fluorescence Enhancement of Single V2 Centers in a 4H-SiC Cavity Antenna
Nano Letters 24 (30), 9289-9295 (2024)
DOI: 10.1021/acs.nanolett.4c02162

M. Bock, P. Sekatski, J.-D. Bancal, S. Kucera, T. Bauer, N. Sangouard, C. Becher, J. Eschner
Calibration-independent bound on the unitarity of a quantum channel with application to a frequency converter
npj Quantum Information vol. 10, Article number: 63 (2024)
DOI: https://doi.org/10.1038/s41534-024-00859-0 (open access)

Y. Zhou, P. Malik, F. Fertig, M. Bock, T. Bauer, T. van Leent, W. Zhang, C. Becher, H. Weinfurter
Long-Lived Quantum Memory Enabling Atom-Photon Entanglement over 101 km of Telecom Fiber
PRX Quantum 5, 020307 (2024)
DOI: https://doi.org/10.1103/PRXQuantum.5.020307 (open access)

J. Heiler, J. Körber, E. Hesselmeier, P. Kuna, R. Stöhr, P. Fuchs, M. Ghezellou, J. Ul-Hassan, W. Knolle, C. Becher, F. Kaiser, J. Wrachtrup 
Spectral stability of V2 centres in sub-micron 4H-SiC membranes
npj Quantum Mater 9, 34 (2024)
DOI: https://doi.org/10.1038/s41535-024-00644-4 (open access)

R. M. Joy, P. Pobedinskas, E. Bourgeois, T. Chakraborty, J. Goerlitz, D. Herrmann, C. Noel, J. Heupel, D. Jannis, N. Gauquelin, J. D’Haen, J. Verbeeck, C. Popov, L. Houssiau, C. Becher, M. Nesládek, K. Haenen
Photoluminescence of Germanium-Vacancy Centers in Nanocrystalline Diamond Films: Implications for Quantum Sensing Applications
ACS Appl. Nano Mater 7, 4, 3873–3884 (2024)
DOI: https://doi.org/10.1021/acsanm.3c05491 

M. Schäfer, B. Kambs, D. Herrmann, T. Bauer, C. Becher,
Two-Stage, Low Noise Quantum Frequency Conversion of Single Photons from Silicon-Vacancy Centers in Diamond to the Telecom C-Band
Adv. Quantum Technol. 2300228 (2023)
DOI: 10.1002/qute.202300228 (open access)

K. S. Hong, H.-J. Lim, D. H. Lee, I.-H. Bae, K.-Y. Jeong, C. Becher, S. Kim, I. Aharonovich,
Toward the Realization of Single-Photon Sources for Radiometry Applications at Room Temperature
IEEE Transactions on Instrumentation and Measurement 72, 1502607 (2023)
DOI: 10.1109/TIM.2023.3289550 (open access)

E. Arenskötter, T. Bauer, S. Kucera, M. Bock, J. Eschner, C. Becher,
Telecom quantum photonic interface for a ⁴⁰Ca⁺ single-ion quantum memory,
npj Quantum Information 9  Article number: 34 (2023).
Abstract/Paper (open access)

R. M. Joy, P. Pobedinskas, E. Bourgeois, T. Chakraborty , J. Görlitz, D. Herrmann, C. Noël, J. Heupel, D. Jannis, N. Gauquelin, J. D'Haen, J. Verbeeck, C. Popov, L. Houssiau, C. Becher, M. Nesládek, K. Haenen,
Germanium vacancy centre formation in CVD nanocrystalline diamond using a solid dopant source,
Science Talks 5, 100157 (2023).
Abstract/Paper (open access)

C. Becher, W. Gao, S. Kar, C. Marciniak, T. Monz, J.G. Bartholomew, P. Goldner, H. Loh, E. Marcellina, K.E.J. Goh, T.S. Koh, B. Weber, Z. Mu, J.-Y. Tsai, Q. Yan, T. Huber-Loyola, S. Höfling, S. Gyger, S. Steinhauer, and V. Zwiller,
2023 roadmap for materials for quantum technologies,
Mater. Quantum Technol. 3, 012501 (2023).
Abstract/Paper (open access)

B. Vindolet, M.-P. Adam, L. Toraille, M. Chipaux, A. Hilberer, G. Dupuy, L. Razinkovas, A. Alkauskas, G. Thiering, A. Gali, M. De Feudis, M.W.N. Ngambou, J. Achard, A. Tallaire, M. Schmidt, C. Becher, and J.-F. Roch,
Optical properties of SiV and GeV color centers in nanodiamonds under hydrostatic pressures up to 180 GPa,
Phys. Rev. B 106, 214109 (2022). Selected as PRB Editors' Suggestion.
Abstract/Paper, arXiv

T. van Leent, M. Bock, F. Fertig, R. Garthoff, S. Eppelt, Y. Zhou, P. Malik, M. Seubert, T. Bauer, W. Rosenfeld, W. Zhang, C. Becher and H. Weinfurter,
Entangling single atoms over 33 km telecom fibre,
Nature 607, 69 (2022).
Abstract/Paper (open access)

J. Görlitz, D. Herrmann, P. Fuchs, T. Iwasaki, T. Taniguchi, D. Rogalla, D. Hardeman, P.-O. Colard, M. Markham, M. Hatano, and C. Becher,
Coherence of a charge stabilised tin-vacancy spin in diamond,
npj Quantum Inf. 8, 45 (2022).
Abstract/Paper (open access)

S. Kück, M. López, H. Hofer, H. Georgieva, J. Christinck, B. Rodiek, G. Porrovecchio, M. Šmid, S. Götzinger, C. Becher, P. Fuchs, P. Lombardi, C. Toninelli, M. Trapuzzano, M. Colautti, G. Margheri, I.P. Degiovanni, P. Traina, S. Rodt, and S. Reitzenstein,
Single photon sources for quantum radiometry: a brief review about the current state-of-the-art,
Appl. Phys. B 128, 28 (2022).
Topical Collection: 40th anniversary of Applied Physics B.
Abstract/Paper (open access)

P. Fuchs, T. Jung, M. Kieschnick, J. Meijer and C. Becher,
A cavity-based optical antenna for color centers in diamond.
APL Photonics 6, 086102 (2021). Special Issue: Integrated Quantum Photonics.
Selected as Editor’s Pick, August 2021.
Abstract/Paper (open access)

P. van Loock, W. Alt, C. Becher, O. Benson, H. Boche, C. Deppe, J. Eschner, S. Höfling, D. Meschede, P. Michler, F. Schmidt, and H. Weinfurter, 
Extending Quantum Links: Modules for Fiber- and Memory-Based Quantum Repeaters, 
Adv. Quantum Technol. 3, 1900141 (2020).
https://doi.org/10.1002/qute.201900141.

A. Norambuena, A. Jimenez, C. Becher, and J.R. Maze,
Effect of phonons on the electron spin resonance absorption spectrum,
New J. Phys. 22, 073068 (2020).
Abstract/Paper (open access)

J. Görlitz, D. Herrmann, G. Thiering, P. Fuchs, M. Gandil, T. Iwasaki, T. Taniguchi, M. Kieschnick, J. Meijer, M. Hatano, A. Gali, and C. Becher,
Spectroscopic investigations of negatively charged tin-vacancy centres in diamond,
New J. Phys. 22, 013048 (2020).
Abstract/Paper (open access)

T. van Leent, M. Bock, R. Garthoff, K. Redeker, W. Zhang, T. Bauer, W. Rosenfeld, C. Becher, and H. Weinfurter,
Long-distance distribution of atom-photon entanglement at telecom wavelength,
Phys. Rev. Lett. 124, 010510 (2020).
Abstract; ArXiv

T. Jung, J. Görlitz, B. Kambs, C. Pauly, N. Raatz, R. Nelz, E. Neu, A.M. Edmonds,M. Markham, F. Mücklich, J. Meijer, and C. Becher,
Spin measurements of NV centers coupled to a photonic crystal cavity,
APL Photonics 4, 120803 (2019). Invited article.
Abstract/Paper (open access)

A. Bommer and C. Becher,
New insights into nonclassical light emission from defects in multi-layer hexagonal boron nitride,
Nanophotonics 8, 2041 (2019).
Abstract/Paper (open access)

C. Weinzetl, J. Görlitz, J.N. Becker, I.A. Walmsley, E. Poem, J. Nunn, and C. Becher,
Coherent control and wave mixing in an ensemble of silicon vacancy centers in diamond,
Phys. Rev. Lett. 122, 063601 (2019).
Abstract; arXiv

R. Nelz, J. Görlitz, D. Herrmann, A. Slablab, M. Challier, M. Radtke, M. Fischer, S. Gsell, M. Schreck, C. Becher, and E. Neu,
Toward wafer-scale diamond nano- and quantum technologies,
APL Mater. 7, 011108 (2019).
Abstract/Paper (open access)

Y. Dumeige, J.-F. Roch, F. Bretenaker, T. Debuisschert, V. Acosta, C. Becher, G. Chatzidrosos, A. Wickenbrock, L. Bougas, A. Wilzewski, and D. Budker,
Infrared laser threshold magnetometry with a NV doped diamond intracavity etalon,
Opt. Express 27, 1706 (2019).
Abstract/Paper (open access)

J.H. Weber, B. Kambs, J. Kettler, S. Kern, J. Maisch, H. Vural, M. Jetter, S.L. Portalupi, C. Becher, and P. Michler,
Two-photon interference in the telecom C-band after frequency conversion of photons from remote quantum emitters,
Nature Nanotechnol. 14, 23 (2019).
Abstract; ArXiv (earlier version)

B. Kambs and C. Becher,
Limitations on the indistinguishability of photons from remote solid state sources,
New J. Phys. 20, 115003 (2018).
Abstract/Paper (open access)

S. Lindner, A. Bommer, A. Muzha, A. Krüger, L. Gines, S. Mandal, O. Williams, E. Londero, A. Gali, and C. Becher,
Strongly inhomogeneous distribution of spectral properties of silicon-vacancy color centers in nanodiamonds,
New J. Phys. 20, 115002 (2018).
Abstract/Paper (open access)

T. Herzog, M. Sartison, S. Kolatschek, S. Hepp, A. Bommer, C. Pauly, F.Mücklich, C. Becher, M. Jetter, S. Portalupi, and P. Michler,
Pure single-photon emission from InGaAs QDs in a tunable fiber-based external mirror microcavity,
Quantum Sci. Technol. 3, 034009 (2018).
Abstract

M. Bock, P. Eich, S. Kucera, M. Kreis, A. Lenhard, C. Becher, and J. Eschner,
High-fidelity entanglement between a trapped ion and a telecom photon via quantum frequency conversion,
Nature Commun. 9, 1998 (2018).
Abstract/Paper (open access)

J. Becker, B. Pingault, D. Groß, M. Gündoğan, N. Kukharchyk, M. Markham, A. Edmonds, M. Atatüre, P. Bushev, and C. Becher,
All-optical control of the silicon-vacancy spin in diamond at millikelvin temperatures,
Phys. Rev. Lett. 120, 053603 (2018).
Abstract; arXiv

J. Becker and C. Becher,
Coherence properties and quantum control of silicon vacancy color centers in diamond (Invited Feature Article),
Phys. Status Solidi A 214, 1700586 (2017).
Abstract; arXiv; Cover picture in pss(a)!

B. Pingault, D.-D. Jarausch, C. Hepp, L. Klintberg, J.N. Becker, M. Markham, C. Becher, and M. Atatüre,
Coherent control of the silicon-vacancy spin in diamond,
Nature Communications 8, 15579 (2017).
Abstract/Paper (open access)

A. Lenhard, J. Brito, M. Bock, C. Becher, and J. Eschner,
Coherence and Entanglement Preservation of Frequency-Converted Heralded Single Photons,
Opt. Express 25, 11187 (2017).
Abstract/Paper (open access)

A. Vaigu, G. Porrovecchio, X.-L. Chu, S. Lindner, M. Smid, A. Manninen, C. Becher, V. Sandoghdar, S. Götzinger and Erkki Ikonen
Experimental demonstration of a predictable single photon source with variable photon flux,
Metrologia 54, 218 (2017).
Abstract

O. Gazzano and C. Becher,
Highly sensitive on-chip magnetometer with saturable absorbers in two-color microcavities,
Phys. Rev. B 95, 115312 (2017).
Abstract; arXiv

J. Benedikter, H. Kaupp, T. Hümmer, Y. Liang, A. Bommer, C. Becher, A. Krueger, J.M. Smith, T. W. Hänsch, and D. Hunger,
A cavity-enhanced single photon source based on the silicon vacancy center in diamond,
Phys. Rev. Appl. 7, 024031 (2017).
Abstract; arXiv

B. Rodiek, M. López, H. Hofer, G. Porrovecchio, M. Smid, X.-L. Chu, S. Götzinger, V. Sandoghdar, S. Lindner, C. Becher, and S. Kück,
Experimental realization of an absolute single-photon source based on a single nitrogen vacancy center in a nanodiamond,
Optica 4, 71 (2017).
Abstract/Paper (open access)

J. N. Becker, J. Görlitz, C. Arend, M. Markham, and C. Becher,
Ultrafast all-optical coherent control of single silicon vacancy colour centres in diamond,
Nature Communications 7, 13512 (2016).
Abstract/Paper (open access)

M. Bock, A. Lenhard, C. Chunnilall, and C. Becher,
Highly efficient heralded single-photon source for telecom wavelengths based on a PPLN waveguide, 
Opt. Express 24, 23992 (2016).
Abstract/Paper (open access)

B. Kambs, J. Kettler, M. Bock, J.N. Becker, C. Arend, A. Lenhard, S.L. Portalupi, M. Jetter, P. Michler, and C. Becher,
Low-noise quantum frequency down-conversion of indistinguishable photons,
Opt. Express 24, 22250 (2016).
Abstract/Paper (open access)

T. Jung, L. Kreiner, C. Pauly, F. Mücklich, A.M. Edmonds, M. Markham and C. Becher,
Reproducible fabrication and characterization of diamond membranes for photonic crystal cavities,
Phys. Status Solidi A (2016); DOI 10.1002/pssa.201600656.
Abstract/Paper

C. Arend, J.N. Becker, H. Sternschulte, D.Steinmüller-Nethl, and C. Becher,
Photoluminescence excitation and spectral hole burning spectroscopy of silicon vacancy centers in diamond,
Phys. Rev. B 94, 045203 (2016).
Abstract; arXiv

C. Arend, P. Appel, J.N. Becker, M. Schmidt, M. Fischer, S. Gsell, M. Schreck, C. Becher, P. Maletinsky, and E. Neu,
Site selective growth of heteroepitaxial diamond nanoislands containing single SiV centers,
Appl. Phys. Lett. 108, 063111 (2016).
Paper  (The article appeared in Appl. Phys. Lett. and may be found here on the APL homepage. Copyright (2015) American Institute of Physics.
This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.)

A. Lenhard, J. Brito, S. Kucera, M. Bock, J. Eschner, and C. Becher,
Single telecom photon heralding by wavelength multiplexing in an optical fiber,
Appl. Phys. B 122:20 (2016).
Abstract; arXiv (slightly older version)

A. Lenhard, M. Bock, C. Becher, S. Kucera, J. Brito, P. Eich, P. Müller, and J. Eschner,
Telecom-heralded single-photon absorption by a single atom,
Phys. Rev. A 92, 063827 (2015).
Abstract; arXiv

J. Riedrich-Möller, S. Pezzagna, J. Meijer, C. Pauly, F.Mücklich, M. Markham, A.M. Edmonds, and C. Becher,
Nanoimplantation and Purcell enhancement of single NV centers in photonic crystal cavities in diamond,
Appl. Phys. Lett. 106, 221103 (2015).
Paper  (The article appeared in Appl. Phys. Lett. and may be found here on the APL homepage. Copyright (2015) American Institute of Physics.
This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.)

B. Pingault, J.N. Becker, C.H.H. Schulte, C. Arend, C. Hepp, T. Godde, A.I. Tartakovskii, M. Markham, C. Becher, and M. Atatüre, All-optical formation of coherent dark states of silicon-vacancy spins in diamond,
Phys. Rev. Lett. 113, 263601 (2014).
Abstract; arXiv
Editor’s suggestion.
Highlighted as Viewpoint in Physics 7, 131 (2014).
Selected as one of the Highlights of the Year 2014 in Physics 7, 132 (2014).

J. Riedrich-Möller, C. Arend, C. Pauly, F. Mücklich, M. Fischer, S. Gsell, M. Schreck, and C. Becher,
Deterministic coupling of a single color center to a photonic crystal cavity in diamond,
Nano Lett. 14, 5281 (2014).
ASAP online version; arXiv

R. Albrecht, A. Bommer, C. Pauly, F. Mücklich, A.W. Schell, P. Engel, T. Schröder, O. Benson, J. Reichel, and C. Becher,
Narrow-band single photon emission at room temperature based on a single Nitrogen-vacancy center coupled to an all-fiber-cavity,
Appl. Phys. Lett. 105, 073113 (2014).
Paper  (The article appeared in Appl. Phys. Lett. and may be found here  on the APL homepage. Copyright (2014) American Institute of Physics.
This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.)

L. Kipfstuhl, F. Guldner, J. Riedrich-Möller, and C. Becher,
Modeling of optomechanical coupling in a phoxonic crystal cavity in diamond,
Opt. Express 22, 12410 (2014).
Abstract / Paper (open access)

T.Müller, C. Hepp, B. Pingault, E. Neu, S. Gsell, M. Schreck, H. Sternschulte, D. Steinmüller-Nethl, C. Becher and M. Atatüre,
Optical signatures of silicon-vacancy spins in diamond,
Nature Commun. 5, 3328 (2014).
Abstract; arXiv

C. Hepp, T.Müller, V.Waselowski, J.N. Becker, B. Pingault, H. Sternschulte, D. Steinmüller-Nethl, A. Gali, J.R. Maze, M. Atatüre, and C. Becher,
Electronic structure of the silicon vacancy color center in diamond,
Phys. Rev. Lett. 112, 036405 (2014).
Abstract; arXiv

M. Leifgen, T. Schröder, F. Gädeke, R. Riemann, V. Métillon, E. Neu, C. Hepp, C. Arend, C. Becher, K. Lauritsen, and O. Benson,
Evaluation of nitrogen- and silicon-vacancy defect centres as single photon sources in quantum key distribution,
New J. Phys. 16, 023021 (2014).
Abstract / Paper (open access)

C. Becher,
Fluorescent nanoparticles: Diamonds from outer space (News&Views),
Nature Nanotechnology 9, 16 (2014).
Abstract

S. Blum, G.A. Olivares-Renteria, C. Ottaviani, C. Becher, and G. Morigi,
Single-photon frequency conversion in nonlinear crystals,
Phys. Rev. A. 88, 053807 (2013).
Abstract; arXiv

R. Albrecht, A. Bommer, C. Deutsch, J. Reichel, and C. Becher,
Coupling of a Single Nitrogen-Vacancy Center in Diamond to a Fiber-Based Microcavity,
Phys. Rev. Lett. 110, 243602 (2013).
Abstract; arXiv

E. Neu, F. Guldner, C. Arend, Y. Liang, S. Ghodbane, H. Sternschulte, D. Steinmüller-Nethl,  A. Krueger, and C. Becher,
Low temperature investigations and surface treatments of colloidal narrowband fluorescent nanodiamonds,
J. Appl. Phys. 113, 203507 (2013).
Paper  (The article appeared in J. Appl. Phys. and may be found here on the JAP homepage. Copyright (2013) American Institute of Physics.
This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.)

E. Neu, C. Hepp, M. Hauschild, S. Gsell, M. Fischer, H. Sternschulte, D. Steinmüller-Nethl, M. Schreck and C. Becher,
Low temperature investigations of single silicon vacancy colour centres in diamond,
New J. Phys. 15, 043005 (2013).
Abstract / Paper (open access)

A. Lenhard, S. Zaske, and C. Becher, Lock-in detection of single photons after two-step frequency conversion,
Opt. Lett. 37, 4254 (2012).
Abstract

S. Zaske, A. Lenhard, C.A. Keßler, J. Kettler, C. Hepp, C. Arend, R. Albrecht, W.-M. Schulz, M. Jetter, P. Michler, and C. Becher,
Visible-to-telecom quantum frequency conversion of light from a single quantum emitter,
Phys. Rev. Lett. 109, 147404 (2012).
Abstract; the paper has been highlighted as synopsis in Physics, Oct. 4, 2012

E. Neu,  M. Agio, and C. Becher,
Photophysics of single silicon vacancy centers in diamond: implications for single photon emission,
Opt. Express 20, 19956 (2012).
Abstract / Paper (open access)

E. Neu, R. Albrecht, M. Fischer, S. Gsell, M. Schreck, and C. Becher,
Electronic transitions of single silicon vacancy centers in the near-infrared spectral region,
Phys. Rev. B 85, 245207 (2012).
Abstract; arXiv

J. Riedrich-Möller, L. Kipfstuhl, C. Hepp, E. Neu, C. Pauly, F. Mücklich, A. Baur, M. Wandt, S. Wolff, M. Fischer,
S. Gsell, M. Schreck, and C. Becher,
One- and two-dimensional photonic crystal micro-cavities in single crystal diamond,
Nature Nanotechnology 7, 69 (2012).
Abstract; arXiv

E. Neu, M. Fischer, S. Gsell, M. Schreck, and C. Becher,
Fluorescence and polarization spectroscopy of single silicon vacancy centers in heteroepitaxial nanodiamonds on iridium,
Phys. Rev. B 84, 205211 (2011).
Abstract; arXiv

S. Zaske, A. Lenhard, and C. Becher,
Efficient Frequency Downconversion at the Single Photon Level from the Red Spectral Range to the Telecommunications C-Band,
Opt. Express 19, 12825 (2011).
Abstract / Paper (open access)

I.-H. Bae, H.S. Moon, S. Zaske, C. Becher, S.K. Kim, S.-N. Park, and D.-H. Lee,
Low-threshold Singly-resonant Continuous-wave Optical Parametric Oscillator based on MgO-doped PPLN,
Appl. Phys. B 103, 311 (2011).
Abstract

E. Neu, C. Arend, E. Gross, F. Guldner, C. Hepp, D. Steinmetz, E. Zscherpel, S. Ghodbane,
H. Sternschulte, D. Steinmüller-Nethl, Y. Liang, A. Krueger, and C. Becher,
Narrowband fluorescent nanodiamonds produced from chemical vapor deposition films,
Appl. Phys. Lett. 98, 243107 (2011).
Paper (The article appeared in Appl. Phys. Lett. and may be found here on the APL homepage. Copyright (2011) American Institute of Physics.
This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.)

E. Neu, D. Steinmetz, J. Riedrich-Möller, S. Gsell, M. Fischer, M. Schreck, and C. Becher,
Single photon emission from silicon-vacancy colour centres in chemical vapour deposition nano-diamonds on iridium,
New J. Phys. 13, 025012 (2011).
Paper at NJP (open access)

D. Steinmetz, E. Neu, J. Meijer, W. Bolse, and C. Becher,
Single photon emitters based on Ni/Si related defects in single crystalline diamond,
Appl. Phys. B 102, 451 (2011).
Abstract, arXiv

A. Lenhard, S. Zaske, J.A. L’huillier, and C. Becher,
Stabilized diode laser pumped, idler resonant cw optical parametric oscillator,
Appl. Phys. B 102, 757 (2011).
Abstract

J. Riedrich-Möller, E. Neu and C. Becher,
Design of microcavities in diamond-based photonic crystals by Fourier- and real-space analysis of cavity fields,
Photon. Nanostruct.: Fundam. Appl. 8, 150 (2010).
Abstract; arXiv

D. Steinmetz, E. Neu, C. Hepp, R. Albrecht, W. Bolse, J. Meijer, D. Rogalla and C. Becher,
Single-photon emission from Ni-related color centers in CVD diamond,
Proc. SPIE 7727, 77270P (2010).
Abstract; arXiv

F. Dubin, C. Russo, H.G. Barros, A. Stute, C. Becher, P.O. Schmidt and R. Blatt,
Quantum to Classical Transition in a Single-Ion Laser,
Nature Physics 6, 350 (2010).
Abstract

S. Zaske, D.-H. Lee, and C. Becher,
Green-pumped cw singly resonant optical parametric oscillator based on MgO:PPLN with frequency stabilization to an atomic resonance,
Appl. Phys. B 98, 729 (2010).
Abstract

2009
C. Russo, H.G. Barros, A. Stute, F. Dubin, E.S. Phillips, T. Monz, T.E. Northup, C. Becher, T. Salzburger, H. Ritsch, P.O. Schmidt, and R. Blatt,
Raman spectroscopy of a single ion coupled to a high-finesse cavity,
Appl. Phys. B 95, 205 (2009).
Abstract

2008
C. Kreuzer, J. Riedrich-Möller, E. Neu and C. Becher,
Design of Photonic Crystal Microcavities in Diamond Films,
Opt. Express 16, 1632 (2008).
Abstract / Paper (open access)

2006
P. Bushev, D. Rotter, A. Wilson, F. Dubin, C. Becher, J. Eschner, R. Blatt, V. Steixner, P. Rabl and P. Zoller
Feedback cooling of a single trapped ion
Phys. Rev. Lett. 96, 043003 (2006).
Abstract

2005
H. Häffner, W. Hänsel, C.F. Roos, J. Benhelm, D. Chek-al-kar, M. Chwalla, T. Körber, U.D. Rapol, M. Riebe, P.O. Schmidt, C. Becher, O. Gühne, W. Dür and R. Blatt
Scalable multi-particle entanglement of trapped ions
Nature 438, 643 (2005).
Abstract

H. Häffner, F. Schmidt-Kaler, W. Hänsel, C.F. Roos, T. Körber, M. Chwalla, M. Riebe, J. Benhelm, U.D. Rapol, C. Becher, and R. Blatt
Robust entanglement
Appl. Phys. B 81, 151–153 (2005).
Abstract

A. Kreuter, C. Becher, G.P.T. Lancaster, A.B. Mundt, C. Russo, H. Häffner, C. Roos, W. Hänsel, F. Schmidt-Kaler, R. Blatt, and M.S. Safronova
Experimental and theoretical study of the 3d2D-level lifetimes of 40Ca+
Phys. Rev. A. 71, 032504 (2005).
Abstract

2004
R. Blatt, H. Häffner, C.F. Roos, C. Becher and F. Schmidt-Kaler
Ion trap quantum computing with Ca+ ions
Quantum Information Processing 3, 61 (2004).
Abstract

C. Maurer, C. Becher, C. Russo, J. Eschner, and R. Blatt
A single photon source based on a single Ca+ ion
New J. Phys. 6, 94 (2004).
Abstract

M. Riebe, H. Häffner, C.F. Roos, W. Hänsel, J. Benhelm, G.P.T. Lancaster, T.W. Körber, C. Becher, F. Schmidt-Kaler, D.F.V. James, and R. Blatt
Deterministic quantum teleportation with atoms
Nature 429, 734 (2004).
Abstract

P. Bushev, M.A. Wilson, J. Eschner, C. Raab, F. Schmidt-Kaler, C. Becher, and R. Blatt
Forces between a single atom and its distant mirror image
Phys. Rev. Lett. 92, 223602 (2004).
Abstract

C.F. Roos, M. Riebe, H. Häffner, W. Hänsel, J. Benhelm, G.P.T. Lancaster, C. Becher, F. Schmidt-Kaler, and R. Blatt
Control and measurement of three-qubit entangled states
Science 304, 1478 (2004).
Abstract

C.F. Roos, G.P.T. Lancaster, M. Riebe, H. Häffner, W. Hänsel, S. Gulde, C. Becher, J. Eschner, F. Schmidt-Kaler, and R. Blatt
Bell states of atoms with ultralong lifetimes and their tomographic state analysis
Phys. Rev. Lett. 92, 220402 (2004).
Abstract

A. Kreuter, C. Becher, G.P.T. Lancaster, A.B. Mundt, C. Russo, H. Häffner, C. Roos, J. Eschner, F. Schmidt-Kaler, and R. Blatt
Spontaneous emission lifetime of a single trapped Ca+ ion in a high finesse cavity
Phys. Rev. Lett. 92, 203002 (2004).
Abstract

F. Schmidt-Kaler, H. Häffner, S. Gulde, M. Riebe, G.P.T. Lancaster, J. Eschner, C. Becher, and R. Blatt
Quantized AC-Stark shifts and their use for multiparticle entanglement and quantum gates
Europhys. Lett. 65, 587 (2004).
Abstract

2003
S. Gulde, H. Häffner, M. Riebe, G.P.T. Lancaster, C. Becher, J. Eschner, F. Schmidt-Kaler, I.L. Chuang, and R. Blatt
Quantum information processing with trapped Ca+ ions
Phil. Trans. R. Soc. Lond. A 361,1-12 (2003).
Abstract

F. Schmidt-Kaler, S. Gulde, M. Riebe, T. Deuschle, A. Kreuter, G. Lancaster, C. Becher, J. Eschner, H. Häffner, and R. Blatt
The coherence of qubits based on single Ca+ ions
J. Opt. B: At. Mol. Opt. Phys. 36, 623-636 (2003).
Abstract

J. Eschner, Ch. Raab, A. Mundt, A. Kreuter, C. Becher, F. Schmidt-Kaler and R. Blatt
Single trapped ions interacting with low- and high-finesse optical cavities
Fortschr. Phys. 51, 359-368 (2003).
Abstract

M.A. Wilson, P. Bushev, J. Eschner, F. Schmidt-Kaler, C. Becher, R. Blatt, and U. Dorner
Vacuum-field level shifts in a single trapped ion mediated by a single distant mirror
Phys. Rev. Lett. 91, 213602 (2003).
Abstract

F. Schmidt-Kaler, H. Häffner, S. Gulde, M. Riebe, G.P.T. Lancaster, T. Deuschle, C. Becher, W. Hänsel, J. Eschner, C.F. Roos, and R. Blatt
How to realize a universal quantum gate with trapped ions
Appl. Phys. B 77, 789 (2003).
Abstract

G.P.T. Lancaster, H. Häffner, M.A. Wilson, C. Becher, J. Eschner, F. Schmidt-Kaler, and R. Blatt
Doppler cooling a single Ca+ ion with a violet extended-cavity diode laser
Appl. Phys. B 76, 805 (2003).
Abstract

 F. Schmidt-Kaler, H. Häffner, M. Riebe, S. Gulde, G.P.T. Lancaster, T. Deuschle, C. Becher, C.F. Roos, J. Eschner, and R. Blatt
Realization of the Cirac-Zoller controlled-NOT quantum gate
Nature 422, 408 (2003).
Abstract

H. Häffner, S. Gulde, M. Riebe, G.P.T. Lancaster, C. Becher, J. Eschner, F. Schmidt-Kaler, and R. Blatt
Precision measurement and compensation of optical Stark shifts for an ion-trap quantum processor
Phys. Rev. Lett. 90, 143602 (2003).
Abstract

S. Gulde, M. Riebe, G.P.T. Lancaster, C. Becher, J. Eschner, H. Häffner, F. Schmidt-Kaler, I.L. Chuang, and R. Blatt
Implementing the Deutsch-Josza algorithm on an ion-trap quantum computer
Nature 421, 48 (2003).
Abstract

A.B. Mundt, A. Kreuter, C. Russo, C. Becher, D. Leibfried,J. Eschner, F. Schmidt-Kaler, and R. Blatt
Coherent Coupling of a single Ca+ ion to a high finesse optical cavity
Appl. Phys. B 76, 117-124 (2003).
Abstract

2002
A.B. Mundt, A. Kreuter, C. Becher, D. Leibfried, J. Eschner, F. Schmidt-Kaler, and R. Blatt
Coupling a single atomic quantum bit to a high finesse optical cavity
Phys. Rev. Lett. 89, 103001 (2002).
Abstract

C. Becher, A. Kiraz, P. Michler, W.V. Schoenfeld, P.M. Petroff, Lidong Zhang, E. Hu, and A. Imamoglu
A quantum dot single-photon source
Physica E 13, 412 (2002).
Abstract

P. Michler, A. Imamoglu, A. Kiraz, C. Becher, M.D. Mason, P.J. Carson, G.F. Strouse, S.K. Buratto, W.V. Schoenfeld, and P.M. Petroff
Nonclassical radiation from a single quantum dot
Phys. Stat. Sol. (b) 229, 399 (2002).
Abstract

A. Kiraz, S. Fälth, C. Becher, B. Gayral, W.V. Schoenfeld, P.M. Petroff, Lidong Zhang, E. Hu, and A. Imamoglu
Photon correlation spectroscopy of a single quantum dot
Phys. Rev. B 65, 161303(R) (2002).
Abstract

2001
P. Michler, A. Kiraz, C. Becher, Lidong Zhang, E. Hu, A. Imamoglu, W.V. Schoenfeld, and P.M. Petroff
Quantum Dot Lasers using high-Q Microdisk Cavities
Phys. Stat. Sol. (b) 224, 797 (2001).
Abstract

A. Kiraz, P. Michler, C. Becher, B. Gayral, A. Imamoglu, Lidong Zhang, E. Hu, W.V. Schoenfeld, and P.M. Petroff
Cavity-quantum electrodynamics using a single InAs quantum dot in a microdisk structure
Appl. Phys. Lett. 78, 3932 (2001).
Abstract

C. Reese, C. Becher, A. Imamoglu, E. Hu, B.D. Geradot, and P.M. Petroff
Photonic crystal microcavities with self-assembled InAs quantum dots as active emitters
Appl. Phys. Lett. 78, 2279 (2001).
Abstract

C. Becher, A. Kiraz, P. Michler, A. Imamoglu, W.V. Schoenfeld, P.M. Petroff, Lidong Zhang, and E. Hu
Nonclassical radiation from a single self-assembled InAs quantum dot
Phys. Rev. B 63, 121312(R) (2001).
Abstract

P. Michler und C. Becher
Photonen auf Bestellung: Maßgeschneiderte Quantenpunkte dienen als Einzelphotonenquellen
Physikalische Blätter 57(9), 55 (2001).
Abstract

2000
P. Michler, A. Kiraz, C. Becher, W.V. Schoenfeld, P.M. Petroff, Lidong Zhang, E. Hu, and A. Imamoglu
A quantum dot single-photon turnstile device
Science 290, 2282 (2000).
Abstract

P. Michler, A. Kiraz, Lidong Zhang, C. Becher, E. Hu, and A. Imamoglu
Laser emission from quantum dots in microdisk structures
Appl. Phys. Lett. 77, 184 (2000).
Abstract

1999
C. Becher and K.-J. Boller
Low-intensity-noise operation of Nd:YVO₄ microchip lasers by pump-noise suppression
J. Opt. Soc. Am. B 16, 286 (1999).
Abstract

1998
C. Becher, E. Gehrig, and K.-J. Boller
Spectrally asymmetric mode correlation and intensity noise in pump-noise-suppressed laser diodes
Phys. Rev. A 57, 3952 (1998).
Abstract

C. Becher and K.-J. Boller
Intensity noise properties of Nd:YVO4 microchip lasers pumped with an amplitude squeezed diode laser
Opt. Commun. 147, 366 (1998).
Abstract

1997
K.-J. Boller, M. Scheidt, B. Beier, C. Becher, M. E. Klein, and D. H. Lee
Diode-pumped optical parametric oscillators
Quantum Semiclass. Opt. 9, 173 (1997).     
Abstract