Imperial College London
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Professor Myungshik Kim

Faculty of Natural Sciences, Department of Physics

Chair in Theoretical Quantum Information Sciences
 
 
 
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Contact

 

+44 (0)20 7594 7754m.kim

 
 
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Location

 

1202Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kim:2016:10.1103/PhysRevA.93.043852,
author = {Kim, MS and Wan, C and Scala, M and Bose, S and Frangeskou, AC and Rahman, ATMA and Morley, GW and Barker, PF},
doi = {10.1103/PhysRevA.93.043852},
journal = {Physical Review A},
title = {Tolerance in the Ramsey interference of a trapped nanodiamond},
url = {http://dx.doi.org/10.1103/PhysRevA.93.043852},
volume = {93},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The scheme recently proposed in [M. Scala et al., Phys Rev Lett 111, 180403 (2013)], where agravity-dependent phase shift is induced on the spin of a nitrogen-vacancy (NV) center in a trappednanodiamond by the interaction between its magnetic moment and the quantized motion of theparticle, provides a way to detect spatial quantum superpositions by means of spin measurementsonly. Here, the effect of unwanted coupling with other motional degrees of freedom is considered andwe show that it does not affect the validity of the scheme. Both this coupling and the additionalerror source due to misalignment between the quantization axis of the NV center spin and thetrapping axis are shown not to change the qualitative behavior of the system, so that a proof-ofprincipleexperiment can be neatly performed. Our analysis, which shows that the scheme retainsthe important features of not requiring ground state cooling and of being resistant to thermalfluctuations, can be useful for the several schemes which have been proposed recently for testingmacroscopic superpositions in trapped microsystems.
AU  - Kim,MS
AU  - Wan,C
AU  - Scala,M
AU  - Bose,S
AU  - Frangeskou,AC
AU  - Rahman,ATMA
AU  - Morley,GW
AU  - Barker,PF
DO  - 10.1103/PhysRevA.93.043852
PY  - 2016///
SN  - 1094-1622
TI  - Tolerance in the Ramsey interference of a trapped nanodiamond
T2  - Physical Review A
UR  - http://dx.doi.org/10.1103/PhysRevA.93.043852
UR  - http://hdl.handle.net/10044/1/30460
VL  - 93
ER  -
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