Results 41 to 50 of about 34,205 (212)
Semiclassical Description of Wavepacket Revival [PDF]
, 2009 We test the ability of semiclassical theory to describe quantitatively the revival of quantum wavepackets --a long time phenomena-- in the one dimensional quartic oscillator (a Kerr type Hamiltonian).
C. Cohen-Tannoudji +11 more
core +2 more sources
Quantum revival for elastic waves in thin plate
, 2017 Quantum revival is described as the time-periodic reconstruction of a wave packet initially localized in space and time. This effect is expected in finite-size systems which exhibits commensurable discrete spectrum such as the infinite quantum well. Here,
Dubois, Marc +2 more
core +1 more source
Arrays of Cooper Pair Boxes Coupled to a Superconducting Reservoir: `Superradiance' and `Revival.'
, 2004 We consider an array of Cooper Pair Boxes, each of which is coupled to a superconducting reservoir by a capacitive tunnel junction. We discuss two effects that probe not just the quantum nature of the islands, but also of the superconducting reservoir ...
B L Györffy +15 more
core +1 more source
Reviving a quantum spin chain [PDF]
Science, 2018 Physics Quantum systems evolve in time but are expected to experience periodic “revivals”—returns to near-initial state—whose period depends on the energy spectrum of the system. The more complex the spectrum, the longer the period, which makes revivals tricky to observe in systems with ...
openaire +1 more source
Experimental investigation of the non-Markovian dynamics of classical and quantum correlations
, 2010 We experimentally investigate the dynamics of classical and quantum correlations of a Bell diagonal state in a non-Markovian dephasing environment. The sudden transition from classical to quantum decoherence regime is observed during the dynamics of such
C. E. Shannon +7 more
core +1 more source
Spacetime structures of continuous time quantum walks [PDF]
, 2005 The propagation by continuous time quantum walks (CTQWs) on one-dimensional lattices shows structures in the transition probabilities between different sites reminiscent of quantum carpets. For a system with periodic boundary conditions, we calculate the
Blumen, Alexander, Muelken, Oliver
core +1 more source
Revival times at quantum phase transitions [PDF]
Physical Review A, 2013 The concept of quantum revivals is extended to many-body systems and the implications of traversing a quantum phase transition are explored. By analyzing two different models, the vibron model for the bending of polyatomic molecules and the Dicke model for a quantum radiation field interacting with a system of two-level atoms, we show evidence of ...
Santos, Francisco de los, Romera, Elvira
openaire +2 more sources
Quantum scheme of dissipative two qubits in a squeezed field: Entanglement and Fisher information
Alexandria Engineering Journal, 2021 A clear relationship between the quantum version of Fisher information and the bipartite system entanglement has been explored recently. Known existing results for some quantum systems having strongly nonlocal correlations are still limited.
S. Abdel-Khalek +5 more
doaj +1 more source
Wave packet revivals and the energy eigenvalue spectrum of the quantum pendulum
, 2003 The rigid pendulum, both as a classical and as a quantum problem, is an interesting system as it has the exactly soluble harmonic oscillator and the rigid rotor systems as limiting cases in the low- and high-energy limits respectively.
Abramowitz +44 more
core +1 more source
Exact quantum dynamics of XXZ central spin problems [PDF]
, 2019 We obtain analytically close forms of benchmark quantum dynamics of the collapse and revival (CR), reduced density matrix, Von Neumann entropy, and fidelity for the XXZ central spin problem.
Chesi, Stefano +3 more
core +2 more sources