N00N State Generation by Floquet Engineering

Yusef Maleki ()
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Yusef Maleki: Institute of Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843-4242, USA

Mathematics, 2025, vol. 13, issue 10, 1-28

Abstract: We review quantum architectures for engineering the N00N state, a bipartite maximally entangled state essential in quantum metrology. These schemes transform the initial state | N ⟩ ⊗ | 0 ⟩ into the N00N state, 1 2 ( | N ⟩ ⊗ | 0 ⟩ + | 0 ⟩ ⊗ | N ⟩ ) , where | N ⟩ and | 0 ⟩ are Fock states with N and 0 excitations, respectively. We demonstrate that this state can be generated through superpositions of quantum light modes, hybrid light–matter interactions, or spin ensembles. Our approach also enables the creation of mesoscopic and macroscopic entangled states, including entangled coherent and squeezed states. Furthermore, we show that a broad class of maximally entangled states can be realized within this framework. Extensions to multi-mode state engineering are also explored.

Keywords: quantum metrology; quantum phase estimation; N00N state; entanglement; Heisenberg-limit metrology (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2025
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