A quantum computer based on NV centers in diamond: Optically detected nutations of single electron and nuclear spins

In an effort to realize a two-bit processor for a quantum computer on the basis of single nitrogen-vacancy defect centers (NV centers) in diamond, the optically detected nutations of the electron spin of a single NV center in the ground state and of the nuclear spin of a 13C atom located at a diamond lattice site nearest to the NV center are studied. The photodynamics of NV and NV + 13C centers under different temperatures and optical excitation conditions is discussed. A seven-level model of a center excited by radiation from an Ar+ laser at room temperature is proposed. On the basis of this model, the experimental spectra of optically detected electron paramagnetic and electron-nuclear double resonances of single NV and NV + 13C centers in diamond nanocrystals, as well as experimental data on the optically detected nutations of the electron and nuclear spins of these centers caused by the actions of pulsed microwave and radiofrequency fields, respectively, are interpreted.

[1]  K. Schaumburg,et al.  Longitudinal and rotating frame spin-lattice relaxation in 13C-enriched diamonds , 1994 .

[2]  J. Wrachtrup,et al.  Scanning confocal optical microscopy and magnetic resonance on single defect centers , 1997 .

[3]  Alexander P. Nizovtsev,et al.  Spectroscopy of Single N-V Centers in Diamond , 2001 .

[4]  Christian Kurtsiefer,et al.  Stable Solid-State Source of Single Photons , 2000 .

[5]  V. Sandoghdar,et al.  Diamond colour centres as a nanoscopic light source for scanning near‐field optical microscopy , 2001, Journal of microscopy.

[6]  Fedor Jelezko,et al.  Read-out of single spins by optical spectroscopy , 2004 .

[7]  P. Grangier,et al.  Nonclassical radiation from diamond nanocrystals , 2001, OFC 2001.

[8]  J.P.D. Martin,et al.  Fine structure of excited 3E state in nitrogen-vacancy centre of diamond , 1999 .

[9]  Matthew Sellars,et al.  Optical spin polarisation of the N-V centre in diamond , 2004 .

[10]  S. Ya. Kilin,et al.  Quantum computation using the 13C nuclear spins near the single NV defect center in diamond , 2001 .

[11]  F. Jelezko,et al.  Observation of coherent oscillation of a single nuclear spin and realization of a two-qubit conditional quantum gate. , 2004, Physical review letters.

[12]  C. Borczyskowski,et al.  THEORY OF NON-MARKOVIAN RELAXATION OF SINGLE TRIPLET ELECTRON SPINS USING TIME-AND FREQUENCY-DOMAIN MAGNETIC RESONANCE SPECTROSCOPY MEASURED VIA OPTIC AL FLUORESCENCE: APPLICATION TO SINGLE PENTACENE MOLECULES IN CRYSTALLINE P -TERPHENYL , 1998 .

[13]  Alexander P. Nizovtsev,et al.  Single spin states in a defect center resolved by optical spectroscopy , 2002 .

[14]  Brown,et al.  Electronic structure of the N-V center in diamond: Experiments. , 1996, Physical review. B, Condensed matter.

[15]  C. Tietz,et al.  Low-temperature microscopy and spectroscopy on single defect centers in diamond , 1999 .

[16]  F. Jelezko,et al.  Observation of coherent oscillations in a single electron spin. , 2004, Physical review letters.

[17]  F. Jelezko,et al.  NV centers in diamond: spin-selective photokinetics, optical ground-state spin alignment and hole burning , 2003 .

[18]  He,et al.  Paramagnetic resonance of photoexcited N-V defects in diamond. II. Hyperfine interaction with the 14N nucleus. , 1993, Physical review. B, Condensed matter.

[19]  F. Jelezko,et al.  Modeling fluorescence of single nitrogen–vacancy defect centers in diamond , 2001 .

[20]  E. van Oort,et al.  Microwave-induced line-narrowing of the N-V defect absorption in diamond , 1991 .

[21]  P. Bolton.  Triplet state ODMR spectroscopy : edited by Richard H. Clarke, John Wiley and Sons 1982. £43.75 (x + 566 pages) ISBN 0 471 07988 X , 1983 .

[22]  J. Wrachtrup,et al.  Spectroscopy on single N–V defect centers in diamond: tunneling of nitrogen atoms into vacancies and fluorescence spectra , 2000 .

[23]  S. Ya. Kilin,et al.  Spin-selective low temperature spectroscopy on single molecules with a triplet-triplet optical transition: Application to the NV defect center in diamond , 2003 .