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Quantum Algorithms
Strong micro-macro entanglement from a weak cross-Kerr nonlinearity
arXiv
Authors: Tian Wang, Hon Wai Lau, Hamidreza Kaviani, Roohollah Ghobadi, Christoph Simon
Year
2014
Paper ID
46002
Status
Preprint
Abstract Read
~2 min
Abstract Words
79
Citations
N/A
Abstract
We study the entanglement generated by a weak cross-Kerr nonlinearity between two initial coherent states, one of which has an amplitude close to the single-photon level, while the other one is macroscopic. We show that strong micro-macro entanglement is possible for weak phase shifts by choosing the amplitude of the macroscopic beam sufficiently large. We analyze the effects of loss and discuss possible experimental demonstrations of the micro-macro entanglement based on homodyne tomography and on a new entanglement witness.
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- It adds a 2014 reference point for readers tracking recent quantum research.
- We study the entanglement generated by a weak cross-Kerr nonlinearity between two initial coherent states, one of which has an amplitude close to the single-photon level, while...
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