One of the most widely known building blocks of modern physics is Heisenberg's
indeterminacy principle. Among the different statements of this fundamental property of the …

The debate on tunnelling times have always been full of contradictions and the attoclock
experiments that measure tunnelling delays in strong-field ionization are no exception. The …

This book emerged from a close collaboration of the authors which started in the fall of 2000.
Early that year one of us (JS) had joined the Stanford faculty after spending nearly 15 years …

Energy extraction is a central task in thermodynamics. In quantum physics, ergotropy
measures the amount of work extractable under cyclic Hamiltonian control. As its full …

Quantum mechanics is generally regarded as the physical theory that is our best candidate
for a fundamental and universal description of the physical world. The conceptual framework …

The time-energy uncertainty relation ΔT ΔE≥ 1/2ħ (3.1) has been a controversial issue
since the advent of quantum theory, with respect to appropriate formalisation, validity and …

In single Hilbert space, Pauli's well–known theorem implies that the existence of a self–
adjoint time operator canonically conjugate to a given Hamiltonian requires the Hamiltonian …

Abstract “Time” as an observable of a physical system is to be understood with reference to
the evolution of some nonstationary quantity. Thus, any observable “time” is the time of …

This article addresses topics regarding time measurements performed on quantum systems.
The motivation is linked to the advent of'attophysics' which makes feasible to follow the …

Time is often said to play an essentially different role from position in quantum mechanics:
whereas position is represented by a Hermitian operator, time is represented by a c-number …