The mechanisms which give rise to Hawking radiation are revealed by analyzing in detail
pair production in the presence of horizons. In preparation for the black hole problem, three …

The two-state vector formalism of quantum mechanics is a time-symmetrized approach to
standard quantum theory particularly helpful for the analysis of experiments performed on …

" This engagingly written text provides a useful pedagogical introduction to an extensive
class of geometrical phenomena in the optics of polarization and phase, including simple …

In quantum Shannon theory, the way information is encoded and decoded takes advantage
of the laws of quantum mechanics, while the way communication channels are interlinked is …

Quantum mechanics allows events to happen with no definite causal order: this can be
verified by measuring a causal witness, in the same way that an entanglement witness …

Quantum computers achieve a speed-up by placing quantum bits (qubits) in superpositions
of different states. However, it has recently been appreciated that quantum mechanics also …

Superoscillations are band-limited functions with the counterintuitive property that they can
vary arbitrarily faster than their fastest Fourier component, over arbitrarily long intervals …

The problem of time in quantum gravity calls for a relational solution. Using quantum
reduction maps, we establish a previously unknown equivalence between three approaches …

In quantum communication networks, wires represent well-defined trajectories along which
quantum systems are transmitted. In spite of this, trajectories can be used as a quantum …

Quantum mechanics is compatible with scenarios where the relative order between two
events can be indefinite. Here we show that two independent instances of a noisy process …