5 papers
Exact Self-Imaging with Arbitrary Revival Spacings
Layton A. Hall, Samuel Alperin
Self-imaging represents a core hallmark of paraxial wave evolution; yet, across its many realizations and generalizations over the past two centuries, the uniformity of recurrence…
Non-Hermitian Realization of Quantum Dynamics on Embedded Manifolds
Samuel Alperin
We show that the Floquet Hamiltonian of a quantum particle driven by a general time-periodic imaginary potential is exactly equivalent, at stroboscopic times, to the Hamiltonian of…
Real-Time Instantons in Complex-Driven Qubits
Samuel Alperin
We consider the dynamics of the quantum Rabi model driven parametrically by a periodic modulation of a complex coupling. We show both analytically and numerically that instead of R…
The Quantum Foucault Modes
Samuel Alperin
The driven quantum harmonic oscillator is fundamental to a number of important physical systems. Here, we consider the quantum harmonic oscillator under non-Hermitian, PT-symmetric…
Counterflow leads to roton spectra in locally interacting superfluids
Samuel Alperin, Eddy Timmermans
The dynamics of strongly interacting quantum fluids such as Helium II are fundamentally distinct from those of dilute, contact-interacting atomic Bose-Einstein condensates. Most dr…