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- Max Planck Institute for Gravitational PhysicsDE42 papers
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9 papers · 2 filters
Manipulating sudden death of entanglement of two-qubit X-states in thermal reservoirs
Mazhar Ali, G. Alber, A. R. P. Rau
Manipulation of sudden death of entanglement (ESD) of two qubits interacting with statistically uncorrelated thermal reservoirs is investigated. It is shown that for initially prep…
Engineering Giant Nonlinearities in Quantum Nanosystems
Kurt Jacobs, Andrew Landahl
We describe a method to engineer giant nonlinearities in, and probes to measure nonlinear observables of, mesoscopic quantum resonators. This involves tailoring the Hamiltonian of…
Linear-Optical Hyperentanglement-Assisted Quantum Error-Correcting Code
Mark M. Wilde, Dmitry B. Uskov
We propose a linear-optical implementation of a hyperentanglement-assisted quantum error-correcting code. The code is hyperentanglement-assisted because the shared entanglement res…
Entangled Fock states for Robust Quantum Optical Metrology, Imaging, and Sensing
Sean D. Huver, Christoph F. Wildfeuer, Jonathan P. Dowling
We propose a class of path-entangled photon Fock states for robust quantum optical metrology, imaging, and sensing in the presence of loss. We model propagation loss with beam-spli…
Arbitrary Coherent Superpositions of Quantized Vortices in Bose-Einstein Condensates from Orbital Angular Momentum Beams of Light
Sulakshana Thanvanthri, Kishore T. Kapale, Jonathan P. Dowling
We recently proposed a scheme for the creation of coherent superpositions of vortex states in Bose-Einstein condensates (BEC) using orbital angular momentum (OAM) states of light […
Sub-Shot-Noise Quantum Optical Interferometry: A Comparison of Entangled State Performance within a Unified Measurement Scheme
Yang Gao, Hwang Lee
Phase measurement using a lossless Mach-Zehnder interferometer with certain entangled -photon states can lead to a phase sensitivity of the order of 1/N, the Heisenberg limit. H…