41.60.+s Single electron spin measurements

Sensing of single nuclear spins in random thermal motion with proximate nitrogen-vacancy centers

Date: 
2015-08-10 - 2016-03-08
Author(s): 

M. Bruderer, P. Fernández-Acebal, R. Aurich, and M. B. Plenio

Reference: 

Phys. Rev. B 93, 115116

Nitrogen-vacancy (NV) centers in diamond have emerged as valuable tools for sensing and polarizing spins. Motivated by potential applications in chemistry, biology, and medicine, we show that NV-based sensors are capable of detecting single spin targets even if they undergo diffusive motion in an ambient thermal environment.

Measuring the defect structure orientation of a single NV- centre in diamond

Date: 
2014-09-23
Author(s): 

Marcus W. Doherty, Julia Michl, Florian Dolde, Ingmar Jakobi, Philipp Neumann, Neil B. Manson, Jörg Wrachtrup

Reference: 

New J. Phys. 16, 63067 (2014)

The negatively charged nitrogen-vacancy (NV-) centre in diamond has many exciting applications in quantum nano-metrology, including magnetometry, electrometry, thermometry and piezometry. Indeed, it is possible for a single NV- centre to measure the complete three-dimensional vector of the local electric field or the position of a single fundamental charge in ambient conditions. However, in order to achieve such vector measurements, near complete knowledge of the orientation of the centre's defect structure is required.

Perfect alignment and preferential orientation of nitrogen-vacancy centers during chemical vapor deposition diamond growth on (111) surfaces

Date: 
2014-03-12
Author(s): 

Julia Michl, Tokuyuki Teraji, Sebastian Zaiser, Ingmar Jakobi, Gerald Waldherr, Florian Dolde, Philipp Neumann, Marcus W. Doherty, Neil B. Manson, Junichi Isoya, Jörg Wrachtrup

Reference: 

Applied Physics Letters 104, 102407 (2014)

Synthetic diamond production is a key to the development of quantum metrology and quantum information applications of diamond. The major quantum sensor and qubit candidate in diamond is the nitrogen-vacancy (NV) color center. This lattice defect comes in four different crystallographic orientations leading to an intrinsic inhomogeneity among NV centers, which is undesirable in some applications.

Coherent properties of single rare-earth spin qubits

Date: 
2014-05-14
Author(s): 

P. Siyushev, K. Xia, R. Reuter, M. Jamali, N. Zhao, N. Yang, C. Duan, N. Kukharchyk, A. D. Wieck, R. Kolesov, J. Wrachtrup

Reference: 

Nature Communications 5, (2014)

Rare-earth-doped crystals are excellent hardware for quantum storage of optical information. Additional functionality of these materials is added by their waveguiding properties allowing for on-chip photonic networks. However, detection and coherent properties of rare-earth single-spin qubits have not been demonstrated so far. Here, we present experimental results on high-fidelity optical initialization, effcient coherent manipulation, and optical readout of a single electron spin of Ce$^{3+}$ ion in a YAG crystal.

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