内容: Quantum cryptography1, 2, 3, 4, 5, 6, 7, 8 exploits the fundamental laws of quantum mechanics to provide a secure way to exchange private information. Such an exchange requires a common random ...
内容: The problem of demonstrating entanglement is central to quantum information processing applications. Resorting to standard entanglement witnesses requires one to perfectly trust the implementat...
内容: The area of quantum communication complexity searches for communication tasks that can be solved more efficiently using quantum states as carriers of information rather than their classical cou...
内容: A quantum code is a subspace of a Hilbert space of a physical system chosen to be correctable against a given class of errors, where information can be encoded. Ideally, the quantum code lies w...
内容: The most succinct manifestation of the second law of thermodynamics is the limitation imposed by the Landauer principle on the amount of heat a Maxwell demon (MD) can convert into free energy p...
内容: The photon creation and annihilation operators are cornerstones of the quantum description of the electromagnetic field. They signify the isomorphism of the optical Hilbert space to that of the...