Imperial College London
Portrait Picture

Professor Myungshik Kim

Faculty of Natural Sciences, Department of Physics

Chair in Theoretical Quantum Information Sciences
 
 
 
//

Contact

 

+44 (0)20 7594 7754m.kim

 
 
//

Location

 

1202Electrical EngineeringSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Clarke:2020:1367-2630/ab7ddd,
author = {Clarke, J and Sahium, P and Khosla, K and Pikovski, I and Kim, M and Vanner, M},
doi = {1367-2630/ab7ddd},
journal = {New Journal of Physics},
pages = {1--32},
title = {Generating mechanical and optomechanical entanglement via pulsed interaction and measurement},
url = {http://dx.doi.org/10.1088/1367-2630/ab7ddd},
volume = {22},
year = {2020}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Entanglement generation at a macroscopic scale o ers an exciting avenue to de-velop new quantum technologies and study fundamental physics on a tabletop.Cavity quantum optomechanics provides an ideal platform to generate and exploitsuch phenomena owing to the precision of quantum optics combined with recent ex-perimental advances in optomechanical devices. In this work, we propose schemesoperating outside the resolved-sideband regime, to prepare and verify both optical-mechanical and mechanical-mechanical entanglement. Our schemes employ pulsedinteractions with a duration much less than the mechanical period and, togetherwith homodyne measurements, can both generate and characterize these types ofentanglement. To improve the performance of our schemes, a precooling stagecomprising prior pulses can be utilized to increase the amount of entanglementprepared, and local optical squeezers may be used to provide resilience againstopen-system dynamics. The entanglement generated by our schemes is quanti edusing the logarithmic negativity and is analysed with respect to the strength of thepulsed optomechanical interactions for realistic experimental scenarios includingmechanical decoherence and optical loss. Two separate schemes for mechanicalentanglement generation are introduced and compared: one scheme based on anoptical interferometric design, and the other comprising sequential optomechani-cal interactions. The pulsed nature of our protocols provides more direct access tothese quantum correlations in the time domain, with applications including quan-tum metrology and tests of quantum decoherence. By considering a parameter setbased on recent experiments, the feasibility to generate signi cant entanglementwith our schemes, even with large optical losses, is demonstrated.
AU  - Clarke,J
AU  - Sahium,P
AU  - Khosla,K
AU  - Pikovski,I
AU  - Kim,M
AU  - Vanner,M
DO  - 1367-2630/ab7ddd
EP  - 32
PY  - 2020///
SN  - 1367-2630
SP  - 1
TI  - Generating mechanical and optomechanical entanglement via pulsed interaction and measurement
T2  - New Journal of Physics
UR  - http://dx.doi.org/10.1088/1367-2630/ab7ddd
UR  - https://iopscience.iop.org/article/10.1088/1367-2630/ab7ddd/meta
UR  - http://hdl.handle.net/10044/1/78727
VL  - 22
ER  -
Download