Strong micro-macro entanglement from a weak cross-Kerr nonlinearity
نویسندگان
چکیده
منابع مشابه
Highly enhanced steady-state optomechanical entanglement via cross-Kerr nonlinearity
Entanglement [1, 2] is one of the most intriguing feature of quantum mechanics, having myriads of potential applications in quantum information and communication [3]. So far, preparation and manipulation of entanglement has been successfully demonstrated in microscopic systems, such as atoms , photons, ions [4–6] etc. However, the validity of entanglement in the macroscopic realm is still a deb...
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In this paper, with the weak cross-Kerr nonlinearity, we first present a special experimental scheme called controlled-path gate with which the realization of all possible bipartite positive-operator-value measurements of two-photon polarization states may be nearly deterministic. Following the same technique, the realization of quantum control gates, including the controlled-NOT gate, Fredkin ...
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Strong nonlinearity at the single photon level represents a crucial enabling tool for optical quantum technologies. Here we report on experimental implementation of a strong Kerr nonlinearity by measurement-induced quantum operations on weak quantum states of light. Our scheme coherently combines two sequences of single photon addition and subtraction to induce a nonlinear phase shift at the si...
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Quantum mechanics is undeniably a successful theory on all fronts. In contrast with the «classical» framework, it provides tools to understand and predict phenomena in the microscopic world. Adoption of the classical or quantum framework is not, however, a simple question of the size of the system under study. Additionally, there is no consensus on the meaning of macroscopicity, especially when...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2015
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.92.012316