Abstract
Quantum entanglement is the quintessence of quantum information science governed by quantum superposition mostly limited to a microscopic regime. For practical applications, however, macroscopic entanglement has an essential benefit for quantum sensing and metrology to beat its classical counterpart. Recently, a coherence approach for entanglement generation has been proposed and demonstrated in a coupled interferometric system using classical laser light, where the quantum feature of entanglement has been achieved via phase basis superposition between identical interferometric systems. Such a coherence method is based on the wave nature of a photon without violating quantum mechanics under the complementarity theory. Here, a method of phase basis quantization via phase basis superposition is presented for macroscopic entanglement in an interferometric system, which is corresponding to the energy quantization of a photon.
Highlights
Quantum entanglement is the quintessence of quantum information science governed by quantum superposition mostly limited to a microscopic regime
In coherence de Broglie waves (CBWs), the resulting phase bases can be interpreted as phase quantization, which corresponds to energy quantization of a N00N state in photonic de Broglie waves (PBWs)
Quantum features of CBWs were analyzed in a coupled interferometric scheme of Mach–Zehnder interferometer (MZI) via path superposition control, where the asymmetric coupling method via a dummy MZI plays an essential role
Summary
Quantum entanglement is the quintessence of quantum information science governed by quantum superposition mostly limited to a microscopic regime. From Eq (1), the corresponding intensities represent a classical bound governed by the Rayleigh criterion or a diffraction limit, whose maximum image resolution is /2 , in which the is the wavelength of the input field E0 (see the upper panels of Fig. 2): Iα cos φ)I0, (2)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
