41.30.+i Quantum imaging

Hologram of a Single Photon

Date: 
2016-01-11
Author(s): 

Radosław Chrapkiewicz, Michał Jachura, Konrad Banaszek, Wojciech Wasilewski

The spatial structure of single photons is becoming an extensively explored resource used for facilitating the free-space quantum key distribution and quantum computation as well as for benchmarking the limits of quantum entanglement generation with orbital angular momentum modes or reduction of the photon free-space propagation speed.

Electric-field sensing using single diamond spins

Date: 
2011-04-17
Author(s): 

F. Dolde, H. Fedder, M. Doherty, T. Nöbauer, F. Rempp, G. Balasubramanian, T. Wolf, F. Reinhard, L. Hollenberg, F. Jelezko, J. Wrachtrup

Reference: 

Nature Physics, 7 (2011), pp 459 - 463
doi:10.1038/nphys1969

The ability to sensitively detect individual charges under ambient conditions would benefit a wide range of applications across disciplines. However, most current techniques are limited to low-temperature methods such as single-electron transistors, single-electron electrostatic force microscopy and scanning tunnelling microscopy. Here we introduce a quantum-metrology technique demonstrating precision three-dimensional electric-field measurement using a single nitrogen-vacancy defect centre spin in diamond. An a.c.

Sub-optical resolution of single spins using magnetic resonance imaging at room temperature in diamond

Date: 
2010-03-29
Author(s): 

Chang Shin, Changdong Kim, Roman Kolesov, Gopalakrishnan Balasubramanian, Fedor Jelezko, Jörg Wrachtrup, Philip R. Hemmer

Reference: 

Journal of Luminescence 130- 1635-1645 (9)

There has been much recent interest in extending the technique of magnetic resonance imaging (MRI) down to the level of single spins with sub-optical wavelength resolution. However, the signal to noise ratio for images of individual spins is usually low and this necessitates long acquisition times and low temperatures to achieve high resolution. An exception to this is the nitrogen-vacancy (NV) color center in diamond whose spin state can be detected optically at room temperature.

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