Sökning: "entanglement"
Visar resultat 41 - 45 av 118 avhandlingar innehållade ordet entanglement.
41. Quantum optics in constrained geometries
Sammanfattning : When light exhibits particle properties, and when matter exhibits wave properties quantum mechanics is needed to describe physical phenomena. A two-photon source produces nonmaximally entangled photon pairs when the source is small enough to diffract light. It is shown that diffraction degrades the entanglement. LÄS MER
42. Experimental Full Network Nonlocality in Bilocal Scenario
Sammanfattning : Efforts in quantum safe communication to realize communication security based on physical properties rather than on computational complexity have led to development of both hardware and protocols for quantum key distribution. Further progress is devoted to realization of quantum secure networks and protocols for handling network security of multiple users. LÄS MER
43. Correlations in low-dimensional quantum many-particle systems
Sammanfattning : This thesis concerns correlation effects in quantum many-particle systems in one and two dimensions. Such systems show many exotic non-Fermi liquid phenomena, which can be treated analytically using non-perturbative field-theory methods. LÄS MER
44. Quantum technologies for secure communications
Sammanfattning : Quantum technologies promise to revolutionize a variety of fields such as metrology, cryptography or computing, among others. The resources that quantum mechanics offers allow us to design faster optimization algorithms, to improve security in communications, and to measure quantities beyond the grasp of current technology. LÄS MER
45. Quantum error correction
Sammanfattning : Quantum error correction is the art of protecting quantum states from the detrimental influence from the environment. To master this art, one must understand how the system interacts with the environment and gives rise to a full set of quantum phenomena, many of which have no correspondence in classical information theory. LÄS MER
