Diamond Spins Shining Bright
نویسندگان
چکیده
منابع مشابه
Viewpoint Diamond Spins Shining Bright
The quantum internet of the future could take many forms, but its core components will be quantum bits (qubits) that can store information and qubits that can carry information [1, 2]. Atom-sized defects in diamond called silicon vacancy centers are promising candidates as the storage component: they possess a single spin whose quantum state (such as a superposition between “up” and “down”) cou...
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Under ambient conditions, spin impurities in solid-state systems are found in thermally mixed states and are optically "dark"; i.e., the spin states cannot be optically controlled. Nitrogen-vacancy (NV) centers in diamond are an exception in that the electronic spin states are "bright"; i.e., they can be polarized by optical pumping, coherently manipulated with spin-resonance techniques, and re...
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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 transistors1,2, single-electron electrostatic force microscopy3 and scanning tunnelling microscopy4. Here we introduce a quantum-metrology technique demonstrati...
متن کاملComment on "Multipartite entanglement among single spins in diamond".
Neumann et al. (Reports, 6 June 2008, p. 1326) recently reported the preparation of multiparticle entanglement among single spins in diamond. However, two of the system's nuclear eigenstates are incorrectly described as product states when they are inherently entangled. Consequently, three of the six states reported, namely the odd-parity Bell states and the W state, were not actually produced.
متن کاملInvestigation of surface magnetic noise by shallow spins in diamond.
We present measurements of spin relaxation times (T1, T1ρ, T2) on very shallow (≲5 nm) nitrogen-vacancy centers in high-purity diamond single crystals. We find a reduction of spin relaxation times up to 30 times compared to bulk values, indicating the presence of ubiquitous magnetic impurities associated with the surface. Our measurements yield a density of 0.01-0.1μB/nm2 and a characteristic ...
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ژورنال
عنوان ژورنال: Physics
سال: 2014
ISSN: 1943-2879
DOI: 10.1103/physics.7.131