CO.CO.MAT
Control of Quantum Correlations in Tailored Matter
SFB/TRR 21 - Stuttgart, Ulm, Tübingen
 © Universität Stuttgart | Impressum

Project C4:
Correlated quantum states in defect centre clusters

Summary

Defects centers in diamond show well controllable magnetic and optical properties. Also their position within the bulk can be controlled with good accuracy. The chosen nitrogen vacancy defect center has an optically accessible paramagnetic ground spin state spin. Within the project clusters of closely spaced defect centers should be fabricated. Owing to their long coherence times the optical transition - as well as magnetic dipole moment- allows to create correlated quantum states throughout a cluster of defect centers. The project is aimed at maximizing and investigating the achievable correlation by tailoring cooperative quantum states. This can for example been done by creating a multi quantum optical as well as magnetic resonance coherence. In the cluster the optical dipole as well as magnetic dipole transition can be tuned with respect to each other. This may be used to simulate quantum phase transitions within the ensemble. Further on the interaction between the system and a spin bath can be controlled. The dephasing properties of cluster states can thus be investigated for different coupling strength. In the second part of the project polariton states, i.e. coupled light matter states should be generated by using light pulses and the spin ground state of the defect centers. It is the aim to achieve a complete and reversible mapping of light states onto the spin states of an ensemble of defect center spins. We intend to test theoretical models which predict slow decoherence of the resulting multiparticle spin states. In the third part of the project the coupling of the light field to internal degrees of freedom of the defect centers should used to generate slow group velocities of a probe light field. This should be achieved by using coherent population oscillations between the defect center ground state and its first excited state. It should be inquired whether the group velocity of a probe light field can be controlled via an external parameter yielding a switchable group velocity device which might work under ambient conditions.


Project leaders

Dr. Philipp Neumann, 3. Physikalisches Institut, Universität Stuttgart

Prof. Dr. Jörg Wrachtrup, 3. Physikalisches Institut, Universität Stuttgart


Refs & Publications

N. Aslam, M. Pfender, P. Neumann, R. Reuter, A. Zappe, F. F. de Oliveira, A. Denisenko, H. Sumiya, S. Onoda, J. Isoya, and J. Wrachtrup
"Nanoscale nuclear magnetic resonance with chemical resolution"
Science 357, 357, 67 (2017); doi: 10.1126/science.aam8697

F. F. de Oliveira, D. Antonov, Y. Wang, P. Neumann, S. A. Momenzadeh, T. Häußermann, A. Pasquarelli, A. Denisenko, and J. Wrachtrup
"Tailoring spin defects in diamond by lattice charging"
Nature Communications 8, ncomms15409 (2017); doi: 10.1038/ncomms15409

J. N. Greiner, D. B. R. Dasari, and J. Wrachtrup
"Purification of an unpolarized spin ensemble into entangled singlet pairs"
Scientific Reports 7, 529 (2017); doi: 10.1038/s41598-017-00603-z

I. Jakobi, P. Neumann, Y. Wang, D. B. R. Dasari, F. E. Hallak, M. A. Bashir, M. Markham, A. Edmonds, D. Twitchen, and J. Wrachtrup
"Measuring broadband magnetic fields on the nanoscale using a hybrid quantum register"
Nat Nanotechnol. 12, 67 (2017); doi: 10.1038/nnano.2016.163

S. Zaiser, T. Rendler, I. Jakobi, T. Wolf, S.-Y. Lee, S. Wagner, V. Bergholm, T. Schulte-Herbrüggen, P. Neumann, and J. Wrachtrup
"Enhancing quantum sensing sensitivity by a quantum memory"
Nat. Commun. 7, 12279 (2016); doi: 10.1038/ncomms12279

S. Yang, Y. Wang, D. D. B. Rao, T. Hien Tran, A. S. Momenzadeh, M. Markham, D. J. Twitchen, P. Wang, W. Yang, R. Stöhr, P. Neumann, H. Kosaka, and J. Wrachtrup
"High-fidelity transfer and storage of photon states in a single nuclear spin"
Nat Photon 10, 507 (2016); doi: 10.1038/nphoton.2016.103

T. Staudacher, N. Raatz, S. Pezzagna, J. Meijer, F. Reinhard, C. A. Meriles, and J. Wrachtrup
"Probing molecular dynamics at the nanoscale via an individual paramagnetic centre"
Nat Commun 6, 8527 (2015); doi: 10.1038/ncomms9527

N. Aslam, M. Pfender, R. Stöhr, P. Neumann, M. Scheffler, H. Sumiya, H. Abe, S. Onoda, T. Ohshima, J. Isoya, and J. Wrachtrup
"Single spin optically detected magnetic resonance with 60–90 GHz (E-band) microwave resonators"
Rev. Sci. Instrum. 86, 064704 (2015); doi: 10.1063/1.4922664

Y. Wang, F. Dolde, J. Biamonte, R. Babbush, V. Bergholm, S. Yang, I. Jakobi, P. Neumann, A. Aspuru-Guzik, J. D. Whitfield, and J. Wrachtrup
"Quantum Simulation of Helium Hydride Cation in a Solid-State Spin Register"
ACS Nano 9, 7769 (2015); doi: 10.1021/acsnano.5b01651

T. Häberle, D. Schmid-Lorch, F. Reinhard, and J. Wrachtrup
"Nanoscale nuclear magnetic imaging with chemical contrast"
Nat. Nanotechnol. 10, 125 (2015); doi: 10.1038/nnano.2014.299

T. Wolf, P. Neumann, K. Nakamura, H. Sumiya, T. Ohshima, J. Isoya, and J. Wrachtrup
"Subpicotesla Diamond Magnetometry"
Phys. Rev. X 5, 041001 (2015); doi: 10.1103/PhysRevX.5.041001

M. W. Doherty, J. Michl, F. Dolde, I. Jakobi, P. Neumann, N. B. Manson, and J. Wrachtrup
"Measuring the defect structure orientation of a single NV− centre in diamond"
New J. Phys. 16, 063067 (2014); doi: 10.1088/1367-2630/16/6/063067

M. Pfender, N. Aslam, G. Waldherr, P. Neumann, and J. Wrachtrup
"Single-spin stochastic optical reconstruction microscopy"
Proc. Natl. Acad. Sci. USA 111, 14669 (2014); doi: 10.1073/pnas.1404907111

J. Michl, T. Teraji, Z. Zaiser, Ingmar Jakobi, G. Waldherr, F. Dolde, P. Neumann, M. W. Doherty, N. B. Manson, J. Isoya, and J. Wrachtrup
"Perfect alignment and preferential orientation of nitrogen-vacancy centers during chemical vapor deposition diamond growth on (111) surfaces"
Applied Physics Letters 104, 102407 (2014); doi: 10.1063/1.4868128

F. Dolde, M. W. Doherty, J. Michl, I. Jakobi, B. Naydenov, S. Pezzagna, J. Meijer, P. Neumann, F. Jelezko, N. B. Manson, and J. Wrachtrup
"Nanoscale Detection of a Single Fundamental Charge in Ambient Conditions Using the NV-- Center in Diamond"
Phys. Rev. Lett. 112, 097603 (2014); doi: 10.1103/PhysRevLett.112.097603

F. Dolde, V. Bergholm, Y. Wang, I. Jakobi, B. Naydenov, S. Pezzagna, J. Meijer, F. Jelezko, P. Neumann, T. Schulte-Herbrüggen, J. Biamonte & J. Wrachtrup
"High-fidelity spin entanglement using optimal control"
Nat. Commun. 5, 3371 (2014); doi: 10.1038/ncomms4371

G.Waldherr, Y.Wang, S. Zaiser, M. Jamali, T. Schulte-Herbrüggen, H. Abe, T. Ohshima, J. Isoya, J. F. Du, P. Neumann & J. Wrachtrup
"Quantum error correction in a solid-state hybrid spin register"
Nature506, 204 (2014); doi: 10.1038/nature12919

J. Tisler, T. Oeckinghaus, R. J. Stöhr, R. Kolesov, R. Reuter, F. Reinhard, and J. Wrachtrup
"Single Defect Center Scanning Near-Field Optical Microscopy on Graphene"
Nano Lett. 13, 3965 (2013); doi: 10.1021/nl402495a

S-Y. Lee, M. Widmann, T. Rendler, M. W. Doherty, T. M. Babinec, S. Yang, M. Eyer, P. Siyushev, B. J. M. Hausmann, M. Loncar, Z. Bodrog, A. Gali, N. B. Manson, H. Fedder, J. Wrachtrup
"Readout and control of a single nuclear spin with a metastable electron spin ancilla"
Nat Nano 8, 487 (2013); doi: 10.1038/nnano.2013.104

P. Neumann, I. Jakobi, F. Dolde, C. Burk, R. Reuter, G. Waldherr, J. Honert, T. Wolf, A. Brunner, J. H. Shim, D. Suter, H. Sumiya, J. Isoya, and J. Wrachtrup
"High-Precision Nanoscale Temperature Sensing Using Single Defects in Diamond"
Nano Lett. 13, 2738 (2013); doi: 10.1021/nl401216y

F. Shi, Q. Zhang, B. Naydenov, F. Jelezko, J. Du, F. Reinhard, and J. Wrachtrup
"Quantum logic readout and cooling of a single dark electron spin"
Phys. Rev. B 87, 195414 (2013); doi: 10.1103/PhysRevB.87.195414

P. Siyushev, H. Pinto, M. Vörös, A. Gali, F. Jelezko, and J. Wrachtrup
"Optically Controlled Switching of the Charge State of a Single Nitrogen-Vacancy Center in Diamond at Cryogenic Temperatures"
Phys. Rev. Lett. 110, 167402 (2013); doi: 10.1103/PhysRevLett.110.167402

A. Laraoui, F. Dolde, C. Burk, F. Reinhard, J. Wrachtrup & C. A. Meriles
"High-resolution correlation spectroscopy of 13C spins near a nitrogen-vacancy centre in diamond"
Nat. Commun.4, 1651 (2013); doi: 10.1038/ncomms2685

F. Dolde, I. Jakobi, B. Naydenov, N. Zhao, S. Pezzagna, C. Trautmann, J. Meijer, P. Neumann, F. Jelezko, and J. Wrachtrup
"Room-temperature entanglement between single defect spins in diamond"
Natur Physics 9, 139-143 (2013); doi: 10.1038/nphys2545

T. Staudacher, F. Shi, S. Pezzagna, J. Meijer, J. Du, C. A. Meriles, F. Reinhard, and J. Wrachtrup
"Nuclear Magnetic Resonance Spectroscopy on a (5-Nanometer)3 Sample Volume"
Science 339, 561 (2013); doi: 10.1126/science.1231675

N. Aslam, G. Waldherr, P. Neumann, F. Jelezko, and J. Wrachtrup
"Photo-induced ionization dynamics of the nitrogen vacancy defect in diamond investigated by single-shot charge state detection"
New Journal of Physics 15, 013064 (2013); doi: 10.1088/1367-2630/15/1/013064

G. Waldherr, A. C. Dada, P. Neumann, F. Jelezko, E. Andersson, and J. Wrachtrup
"Distinguishing between Nonorthogonal Quantum States of a Single Nuclear Spin"
Phys. Rev. Lett. 109, 180501 (2012); doi: 10.1103/PhysRevLett.109.180501

N. Zhao, J. Honert, B. Schmid, M. Klas, J. Isoya, M. Markham, D. Twitchen, F. Jelezko, R.-B. Liu, H. Fedder, and J. Wrachtrup
"Sensing single remote nuclear spins"
Nature Nanotechnology 7, 657 (2012); doi: 10.1038/nnano.2012.152

F. Reinhard, F. Shi, N. Zhao, F. Rempp, B. Naydenov, J. Meijer, L. T. Hall, L. Hollenberg, J. Du, R.-B. Liu, and J. Wrachtrup
"Tuning a Spin Bath through the Quantum-Classical Transition"
Phys. Rev. Lett. 108, 200402 (2012); doi: 10.1103/PhysRevLett.108.200402

L. T. Hall, G. C. G. Beart, E. A. Thomas, D. A. Simpson, L. P. McGuinness, J. H. Cole, J. H. Manton, R. E. Scholten, F. Jelezko, J. Wrachtrup, S. Petrou, and L. C. L. Hollenberg
"High spatial and temporal resolution wide-field imaging of neuron activity using quantum NV-diamond"
Scientific Reports 2, 401 (2012); doi: 10.1038/srep00401

N. Mizuochi, T. Makino, H. Kato, D. Takeuchi, M. Ogura, H. Okushi, M. Nothaft, P. Neumann, A. Gali, F. Jelezko, J. Wrachtrup, and S. Yamasaki
"Electrically driven single-photon source at room temperature in diamond"
Nature Photonics 6, 299 (2012); doi: 10.1038/nphoton.2012.75

M. W. Doherty, F. Dolde, H. Fedder, F. Jelezko, J. Wrachtrup, N. B. Manson, and L. C. L. Hollenberg
"Theory of the ground-state spin of the NV^{-} center in diamond"
Phys. Rev. B 85, 205203 (2012); doi: 10.1103/PhysRevB.85.205203

B. Grotz, M. V. Hauf, M. Dankerl, B. Naydenov, S. Pezzagna, J. Meijer, F. Jelezko, J. Wrachtrup, M. Stutzmann, F. Reinhard, and J. A. Garrido
"Charge state manipulation of qubits in diamond"
Nature Communications 3, 729 (2012); doi: 10.1038/ncomms1729

G. Waldherr, J. Beck, P. Neumann, R. S. Said, M. Nitsche, M. L. Markham, D. J. Twitchen, J. Twamley, F. Jelezko, and J. Wrachtrup
"High-dynamic-range magnetometry with a single nuclear spin in diamond"
Nature Nanotechnology 7, 105–108 (2012); doi: 10.1038/nnano.2011.224

S. Pezzagna, D. Rogalla, H.-W. Becker, I. Jakobi, F. Dolde, B. Naydenov, J. Wrachtrup, F. Jelezko, C. Trautmann, and J. Meijer
"Creation of colour centres in diamond by collimated ion-implantation through nano-channels in mica"
Phys. Status Solidi A 208, 2017-2022 (2011); doi: 10.1002/pssa.201100455

G. Waldherr, P. Neumann, S. F. Huelga, F. Jelezko, and J. Wrachtrup
"Violation of a Temporal Bell Inequality for Single Spins in a Diamond Defect Center"
Phys. Rev. Lett. 107, 090401 (2011); doi: 10.1103/PhysRevLett.107.090401

B. Grotz, J. Beck, P. Neumann, B. Naydenov, R. Reuter, F. Reinhard, F. Jelezko, J. Wrachtrup, D. Schweinfurth, B. Sarkar, and P. Hemmer
"Sensing external spins with nitrogen-vacancy diamond"
New Journal of Physics 13, 055004 (2011); doi: 10.1088/1367-2630/13/5/055004

L. P. McGuinness, Y. Yan, A. Stacey, D. A. Simpson, L. T. Hall, D. Maclaurin, S. Prawer, P. Mulvaney, J. Wrachtrup, F. Caruso, R. E. Scholten, and L. C. L. Hollenberg
"Quantum measurement and orientation tracking of fluorescent nanodiamonds inside living cells"
Nature Nanotechnolgy 6, 358-363 (2011); doi: 10.1038/NNANO.2011.64

G. Waldherr, J. Beck, M. Steiner, P. Neumann, A. Gali, Th. Frauenheim, F. Jelezko, and J. Wrachtrup
"Dark States of Single Nitrogen-Vacancy Centers in Diamond Unraveled by Single Shot NMR"
Phys. Rev. Lett. 106, 157601 (2011); doi: 10.1103/PhysRevLett.106.157601

F. Dolde, H. Fedder, M. W. Doherty, T. Nöbauer, F. Rempp, G. Balasubramanian, T. Wolf, F. Reinhard, L. C. L. Hollenberg, F. Jelezko, and J. Wrachtrup
"Electric-field sensing using single diamond spins"
Nature Physics 7, (6) 459-463 (2011); doi: 10.1038/NPHYS1969

L. Marseglia, J. P. Hadden, A. C. Stanley-Clarke, J. P. Harrison, B. Patton, Y.-L. D. Ho, B. Naydenov, F. Jelezko, J. Meijer, P. R. Dolan, J. M. Smith, J. G. Rarity, and J. L. O’Brien
"Nanofabricated solid immersion lenses registered to single emitters in diamond"
Appl. Phys. Lett. 98, (13), 133107 (2011) ; doi: 10.1063/1.3573870

M. V. Hauf, B. Grotz, B. Naydenov, M. Dankerl, S. Pezzagna, J. Meijer, F. Jelezko, J. Wrachtrup, M. Stutzmann, F. Reinhard, and J. A. Garrido
"Chemical control of the charge state of nitrogen-vacancy centers in diamond"
Phys. Rev. B 83, 081304 (2011); doi: 10.1103/PhysRevB.83.081304

H. Fedder, F. Dolde, F. Rempp, T. Wolf, P. Hemmer, F. Jelezko, and J. Wrachtrup
"Towards T(1)-limited magnetic resonance imaging using Rabi beats"
Appl. Phys. B 102, 497-502 (2011); doi: 10.1007/s00340-011-4408-4

B. Naydenov, F. Dolde, L. T. Hall, C. Shin, H. Fedder, L. Hollenberg, F. Jelezko, and J. Wrachtrup
"Dynamical decoupling of a single-electron spin at room temperature"
Phys. Rev. B 83, 081201 (R) (2011); doi: 10.1103/PhysRevB.83.081201

M.L. Markham, J.M. Dodson, G.A. Scarsbrook, D.J. Twitchen, G. Balasubramanian, F. Jelezko, and J. Wrachtrup
"CVD diamond for spintronics"
Diamond and Related Materials 20, 134-139 (2011); doi: 10.1016/j.diamond.2010.11.016

Y. Kubo, F. R. Ong, P. Bertet, D. Vion, V. Jacques, D. Zheng, A. Dréau, J.-F. Roch, A. Auffeves, F. Jelezko, J. Wrachtrup, M. F. Barthe, P. Bergonzo, and D. Esteve
"Strong Coupling of a Spin Ensemble to a Superconducting Resonator"
Phys. Rev. Lett. 105, 140502 (2010); doi: 10.1103/PhysRevLett.105.140502

R. J. Stohr, R. Kolesov, J. Pflaum, and J. Wrachtrup
"Fluorescence of laser-created electron-hole plasma in graphene."
Phys. Rev. B 82, 121408 (2010); doi: 10.1103/PhysRevB.82.121408

A. P. Nizovtsev, S. Ya. Kilin, P. Neumann, F. Jelezko, and J. Wrachtrup
"Quantum registers based on single NV + n13C centers in diamond: II. Spin characteristics of registers and spectra of optically detected magnetic resonance"
Optics and Spectroscopy 108, 239 (2010); doi: 10.1134/S0030400X1002013X

P. Neumann, J. Beck, M. Steiner, F. Rempp, H. Fedder, P. R. Hemmer, J. Wrachtrup, and F. Jelezko
"Single-Shot Readout of a Single Nuclear Spin"
Science 329, 542 (2010); doi: 10.1126/science.1189075

R. J. Stohr, G. J. Beirne, P. Michler, R. Scholz, J. Wrachtrup, and J. Pflaum
"Enhanced photoluminescence from self-organized rubrene single crystal surface structures."
Appl. Phys. Lett. 96, 231902 (2010); doi: 10.1063/1.3449124

J. Wrachtrup
"Defect center room-temperature quantum processors"
Proceed. Nat. Acad. Sci. USA 107, 9479-9480 (2010); doi: 10.1073/pnas.1004033107

J. O. Orwa, I. Aharonovich, F. Jelezko, G. Balasubramanian, P. Balog, M. Markham, D. J. Twitchen, A. D. Greentree, and S. Prawer
"Nickel related optical centres in diamond created by ion implantation"
J. Appl. Phys. 107, 093512 (2010); doi: 10.1063/1.3357374

J. Wrachtrup
"NANOPARTICLES Switching blinking on and off"
Nature Nanotechnology 5, 314-315 (2010); doi: 10.1038/nnano.2010.85

S. Steinert, F. Dolde, P. Neumann, A. Aird, B. Naydenov, G. Balasubramanian, F. Jelezko, and J. Wrachtrup
"High sensitivity magnetic imaging using an array of spins in diamond"
Rev. Sci. Instrum. 81, 043705 (2010); doi: 10.1063/1.3385689

B. Naydenov, V. Richter, J. Beck, M. Steiner, P. Neumann, G. Balasubramanian, J. Achard, F. Jelezko, J. Wrachtrup, and R. Kalish
"Enhanced generation of single optically active spins in diamond by ion implantation"
Appl. Phys. Lett. 96, 163108 (2010)

C. Simon, M. Afzelius, J. Appel, A. Boyer de la Giroday, S.J. Dewhurst, N. Gisin, C.Y. Hu, F. Jelezko, S. Kröll, J.H. Müller, J. Nunn, E.S. Polzik, J.G. Rarity, H. De Riedmatten, W. Rosenfeld, A.J. Shields, N. Sköld, R.M. Stevenson, R. Thew, I.A. Walmsley
"Quantum memories"
Eur. Phys. J. D 58, 1-22 (2010); doi: 10.1140/epjd/e2010-00103-y

T. D. Ladd, F. Jelezko, R. Laflamme, Y. Nakamura, C. Monroe, and J. L. O’Brien
"Quantum computers"
Nature 464, 45 (2010); doi: 10.1038/nature08812

P. Neumann, R. Kolesov, B. Naydenov, J. Beck, F. Rempp, M. Steiner, V. Jacques, G. Balasubramanian, M. L. Markham, D. J. Twitchen, S. Pezzagna, J. Meijer, J. Twamley, F. Jelezko, and J. Wrachtrup
"Quantum register based on coupled electron spins in a room-temperature solid"
Nature Physics 6, 249-253 (2010)

M. Gerken, A. Krippner-Heidenreich, S. Steinert, S. Willi, F. Neugart, A. Zappe, J. Wrachtrup, C. Tietz, and P. Scheurich
"Fluorescence correlation spectroscopy reveals topological segregation of the two tumor necrosis factor membrane receptors"
Biochimica et Biophysica Acta (BBA) - Biomembranes 1798, 1081 (2010); doi: 10.1016/j.bbamem.2010.02.021

M. Steiner, P. Neumann, J. Beck, F. Jelezko, and J. Wrachtrup
"Universal enhancement of the optical readout fidelity of single electron spins at nitrogen-vacancy centers in diamond"
Phys. Rev. B 81, 035205 (2010); doi: 10.1103/PhysRevB.81.035205

C. Shin, C. Kim, R. Kolesov, G. Balasubramanian, F. Jelezko, J. Wrachtrup, and P. R. Hemmer
"Sub-optical resolution of single spins using magnetic resonance imaging at room temperature in diamond"
J Lumin 130, 1635-1645, (2010); doi: 10.1016/j.jlumin.2009.12.006

N. Mizuochi, P. Neumann, F. Rempp, J. Beck, V. Jacques, P. Siyushev, K. Nakamura, D. Twitchen, H. Watanabe, S. Yamasaki, F. Jelezko, and J. Wrachtrup
"Coherence of single spins coupled to a nuclear spin bath of varying density"
Phys. Rev. Lett. B 80, 041201R (2009); doi: 10.1103/PhysRevB.80.041201

R. Kolesov , B. Grotz, G. Balasubramanian, R. J. Stöhr, A.A.L. Nicolet, P.R. Hemmer, F. Jelezko, and J. Wrachtrup
"Wave-particle duality of single surface plasmon polaritons"
Nature Physics 5, 470-474 (2009)

A. Batalov, V. Jacques, F. Kaiser, P. Siyushev, P. Neumann, L. J. Rogers, R. L. McMurtrie, N. B. Manson, F. Jelezko, and J. Wrachtrup
"Low temperature studies of the excited-state structure of Nitrogen-Vacancy color centers in diamonde"
Phys. Rev. Lett. 102, 195506 (2009); doi: 10.1103/PhysRevLett.102.195506

G. Balasubramanian, P. Neumann, D. Twichen, M. Markham, R. Kolesov, N. Mizuoschi, J. Isoya, J. Achard, J. Beck, J. Tissler, V. Jacques, P. R. Hemmer, F. Jelezko, and J. Wrachtrup
"Ultralong spin coherence time in isotopically engineered diamond"
Nature Materials 8, 383-387 (2009)

V. Jacques, P. Neumann, J. Beck, M. Markham, D. Twitchen, J. Meijer, G. Balasubramanian, F. Jelezko, and J. Wrachtrup
"Dynamic polarization of single nuclear spins by optical pumping of NV color centers in diamond at room temperature"
Phys. Rev. Lett. 102, 057403 (2009); doi: 10.1103/PhysRevLett.102.057403

P. Neumann, R. Kolesov, V. Jacques, J. Beck, J. Tisler, A. Batalov., L. Rogers, N. B. Manson, G. Balasubramanian, F. Jelezko, and J. Wrachtrup
"Excited-state spectroscopy of single NV defects in diamond using optically detected magnetic resonance"
New Journal of Physics 11, 013017 (2009)

G. Balasubramanian, I. Y. Chan, R. Kolesov, M. Al-Hmoud, J. Tisler, Ch. Shin, Ch. Kim, A. Wojcik, Ph. R. Hemmer, A. Krueger, T. Hanke, A. Leitenstorfer, R. Bratschitsch, F. Jelezko, and J. Wrachtrup
"Nanoscale imaging magnetometry with diamond spins under ambient conditions"
Nature 455, 648-651(2008)

P. Neumann, N. Mizuochi, F. Rempp, P. Hemmer, H. Watanabe, S. Yamasaki, V. Jacques, T. Gaebel, F. Jelezko, and J. Wrachtrup
"Multipartite entanglement among single spins in diamond"
Science 320, 1326-1329 (2008)

J. Meijer, S. Pezzagna, T. Vogel, B. Burchard, H. H. Bukow, I. W. Rangelow, Y. Sarov, H. Wiggers, I. Plümel, F. Jelezko, J. Wrachtrup, F. Schmidt-Kaler, W. Schnitzler, and K. Singer
"Towards the implanting of ions and positioning of nanoparticles with nm spatial resolution"
Appl. Phys. A 91, 567–571 (2008)

Ph. Tamarat, N.B. Manson, J.P. Harrison, R.L. McMurtrie, A. Nizovtsev, C. Santori, R.G. Beausoleil, P. Neumann, T. Gaebel, F. Jelezko, P. Hemmer, and J. Wrachtrup
"Spin-flip and spin-conserving optical transitions of the nitrogen-vacancy centre in diamond"
New J. Phys. 10, 045004 (2008)

A. Batalov, C. Zierl, T. Gaebel, P. Neumann, I.-Y. Chan, G. Balasubramanian, P. R. Hemmer, F. Jelezko, and J. Wrachtrup
"Temporal Coherence of Photons Emitted by Single Nitrogen-Vacancy Defect Centers in Diamond Using Optical Rabi-Oscillations"
Phys. Rev. Lett. 100, 077401 (2008)

J. R. Rabeau, A. Stacey, A. Rabeau, S. Prawer, F. Jelezko, I. Mirza, and J. Wrachtrup
"Single nitrogen vacancy centers in chemical vapor deposited diamond nanocrystals"
Nano Lett. 7, 3433-3437 (2007); arXiv:0706.2518

M. V. G. Dutt, L. Childress, L. Jiang, E. Togan, J. Maze, F. Jelezko, A. S. Zibrov, P. R. Hemmer, and M. D. Lukin
"Quantum register based on individual electronic and nuclear spin qubits in diamond"
Science 316, 1312-1316 (2007)

M. Brecht, H. Studier, A. F. Elli, F. Jelezko, and R. Bittl
"Assignment of red antenna states in photosystem I from Thermosynechoccocus elongatus by single-molecule spectroscopy"
Biochemistry 46, 799-806 (2007)

C. von Borczyskowski, J. Kohler, W.E. Moerner, M. Orrit, and J. Wrachtrup
"Single-molecule electron spin resonance"
Applied Magnetic Resonance 31, 665-676 (2007)

C. Santori, P. Tamarat, P. Neumann, J. Wrachtrup, D. Fattal, R. G. Beausoleil, J. R. Rabeau, P. Olivero, A. D. Greentree, S. Prawer, F. Jelezko, and P. Hemmer
"Coherent population trapping of single spins in diamond under optical excitation"
Phys. Rev. Lett. 97, 247401 (2006); arXiv:quant-ph/0607147

L. Childress, M. V. G. Dutt, J. M. Taylor, A. S. Zibrov, F. Jelezko, J. Wrachtrup, P. R. Hemmer, and M. D. Lukin
"Coherent dynamics of coupled electron and nuclear spin qubits in diamond"
Science 314, 281-285 (2006)

F. Jelezko and J. Wrachtrup
"Single defect centres in diamond: A review"
Phys. Stat. Sol. (a) 203, 13, 3207-3225 (2006)

P. Tamarat, T. Gaebel, J. R. Rabeau, M. Khan, A. D. Greentree, H. Wilson, L. C. L. Hollenberg, S. Prawer, P. Hemmer, F. Jelezko, and J. Wrachtrup
"Stark shift control of single optical centers in diamond"
Phys. Rev. Lett. 97, 083002 (2006); arXiv:quant-ph/0607170

T. Gaebel, M. Domhan, I. Popa, c. Wittmann, P. Neumann, F. Jelezko, J. R. Rabeau, N. Stavrias, A. D. Greentree, S. Prawer, J. Meijer, J. Twamley, P. R. Hemmer, and J. Wrachtrup
"Room-temperature coherent coupling of single spins in diamond"
Nature Physics 2, 408-413 (2006); arXiv:quant-ph/0605038

J. Wrachtrup and F. Jelezko
"Processing quantum information in diamond"
J. Phys.: Condens. Matter 18, 807–824 (2006); arXiv:quant-ph/0510152

M. Howard, J. Twamley, C. Wittmann, T. Gaebel, F. Jelezko, and J. Wrachtrup
"Quantum process tomography and Linblad estimation of a solid-state qubit"
New Journal of Physics 8, 33 (2006); arXiv:quant-ph/0601167

J. Meijer, T. Vogel, B. Burchard, I. W. Rangelow, L. Bischoff, J. Wrachtrup, M. Domhan, F. Jelezko, W. Schnitzler, S. A. Schulz, K. Singer, and F. Schmidt-Kaler
"Concept of deterministic single ion doping with sub-nm spatial resolution"
Appl. Phys. A 83, 321–327 (2006)

J. R. Rabeau, P. Reichart, G. Tamanyan, D. N. Jamieson, S. Prawer, F. Jelezko, T. Gaebel, I. Popa, M. Domhan, and J. Wrachtrup
"Implantation of labelled single nitrogen vacancy centers in diamond using N-15"
Appl. Phys. Lett. 88, 023113 (2006); arXiv:cond-mat/0511722

T. Gaebel, M. Domhan, C. Wittmann, I. Popa, F. Jelezko, J. R. Rabeau, A. D. Greentree, S. Prawer, E. Trajkov, P. R. Hemmer, and J. Wrachtrup
"Photochromism in single nitrogen-vacancy defect in diamond"
Appl. Phys. B 82, 243-246 (2006)