[PDF] Top 20 Measuring quantum coherence with entanglement

... of quantum coherence is historically well developed in quantum optics [20–27], a rigorous framework to quantify coherence for general states in information theo- retic terms has only been ... See full document

... 2018) Quantum coherence, present whenever a quantum system exists in a superposition of multiple classically distinct states, marks one of the fundamental departures from classical ...physics. ... See full document

... the quantum Cram´er-Rao bound can be asymptotically saturated in both cases by means of an optimal measurement, associated with a quantum Fisher information scaling quad- ratically with ...between ... See full document

... enigma. Quantum mechanics stepped into the breach with two important ...of quantum mechanics as a version of probabilistic theory was ...the quantum realm and does not spontaneously appear in ...by ... See full document

... for quantum neural networks were first proposed by ...of quantum dot molecules interacting with each other only by means of their shared phonon ...achievable quantum dot based QNN arcitecture, where ... See full document

... Standard Quantum Limit (achievable by non-adaptive filtering, ...achieved. Quantum error correction for quantum-enhanced mea- surements, recently introduced in (D¨ ur et ...of quantum feedback ... See full document

... an entanglement monotone inspired by the figure of merit in interferometry, and showed that it can never exceed the IP, a quantifier of general quantum correlations introduced in [33]; this establishes a ... See full document

... > 80% efficiency) per transition [53]. He and his collaborators also showed that the propagation losses in their DLSPPWs were relatively low, measuring a 1/e absorp- tion length of ∼50 µm at 1550 nm. While our ... See full document

... of quantum coherence as a resource is a case in ...orthogonal quantum states by Åberg (2006) and progressing alongside the independent yet related resource theory of asymmetry (Gour and Spekkens, ... See full document

... of coherence on the time-scale of the experiment and inhibit the gravitationally mediated ...spurious entanglement between the test masses, the spin operators used in the Witness W will have to readjusted ... See full document

... less than the RMS of the spontaneous emission, and the majority of QCL emission arises from ASE. The amplified THz pulses are proportional to the input pulse. This linear amplification regime corresponds to the lowest ... See full document

... with quantum effects playing a possible role in enhancing the generation of conscious ...of quantum biology. Quantum coherence and entanglement seem to play a role in several ... See full document

... of quantum coherence [36] is dynamically frozen: this occurs for an even number of qubits, initialized in a particular class of states with maximally mixed marginals, and undergoing local independent and ... See full document

... the quantum discord and entanglement between two isolated two-level atoms which are initially prepared in Werner state and each atom interacts with a thermal cavity field by considering the atomic motion ... See full document

... quantum Markov chain?[125] More specifically, they have set the distance measure to be the relative entropy. Their motivation behind this choice comes from the fact that the distance becomes the conditional mutual ... See full document

... the entanglement concentration comes from detecting photons for which the interaction has altered the polarization, which would then require heavy ...distilling entanglement in atomic ensembles represents ... See full document

... For even N , we have found these minimum resources exactly, and these can be used to perform an arbitrary op- eration using teleportation. We arrived at these bounds using a technique we refer to as graph symmetrisation. ... See full document

... the entanglement entropy. In the non-unitary case the entanglement is given by a correlation function involving composite twist fields : T φ :, which have a much richer structure than the twist fields T ... See full document

... [13] Buntschu, F., Clausen, B., Felber, N., Gisin, N., Henzen, L., Junod, P., Litzistorf, G., Monbaron, P., Monat, L., Perroud, D., Ribordy, G., Rochas, A., Robyr, S., Tavares, J, Thew, R., Trinkler, P., Ventura, S., ... See full document

... a quantum process cannot be attained and quantum me- chanics has to content itself with particle-wave comple- mentary descriptions ...able quantum causality and had to rely on probability and ... See full document